| Plenary Sessions | |
| Special Events | |
| LCT | Workshop on LC Science and Technologies |
| AMD | Workshop on Active Matrix Displays |
| FMC | Workshop on FPD Manufacturing, Materials and Components |
| PH | Workshop on Inorganic Emissive Display and Phosphors |
| OLED | Workshop on OLED Displays and Related Technologies |
| 3D | Workshop on 3D/Hyper-Realistic Displays and Systems |
| VHF | Workshop on Applied Vision and Human Factors |
| PRJ | Workshop on Projection and Large-Area Displays and Their Components |
| EP | Workshop on Electronic Paper and Nonvolatile Displays |
| MEET | Workshop on MEMS and Emerging Technologies for Future Displays and Devices |
| DES | Workshop on Display Electronic Systems |
| FLX | Workshop on Flexible Electronics |
| INP | Workshop on Touch Panels and Input Technologies |
| DXR | Topical Session on DX Sensing and Radiation Imaging |
| MVS | Topical Session on Metaverse System |
Plenary Sessions
| Dec. 14 | 9:00-9:30 | Opening |
| Dec. 14 | 9:30-11:30 | Keynote Addresses |
Dec. 14 9:00-9:30 Room 409
Master of Ceremony: Satoshi Ouchi (Executive Chair, IDW '22)
Opening Remarks
Mutsumi Kimura (General Chair, IDW '22)
Achin Bhowmik (President, SID)
Makoto Itami (President, ITE)
Satoshi Ouchi (Executive Chair, IDW '22)
Hiroko Kominami (Program Chair, IDW '22)
Award Ceremony
Haruhiko Okumura (Director, IDW General Incorporated Association)
Keynote AddressesDec. 14 9:30-11:30 Room 409
Chair: Hiroko Kominami (Program Chair, IDW '22)
| Keynote Address-1
9:30 |
Stretchable Transistors and Polymer Light Emitting Diodes
Zhenan Bao Stanford University (United States of America) |
| Keynote Address-2
10:10 |
Liquid Crystal Technology for Next Generation AR/VR Systems toward Metaverse Lu Lu Meta Platforms (United States of America) |
| Keynote Address-3
10:50 |
DaaS - Display as a Service Hideki Tomine Kopin (United States of America) |
Special Events
| Dec. 15 | 9:00-9:40 | Metaverse Special Lecture |
| Dec. 15 | 10:20-11:40 | Special Session: Five Senses and Cross-Modal Technology |
| Dec. 15 | 18:30-20:30 | Display Night |
Metaverse Special Lecture
Dec. 15 9:00-9:40
Dec. 15 10:20-11:40 Room 409
Dec. 15 18:30-20:30 Palace Room (2F), Fukuoka Sunpalace
Workshop on LC Science and Technologies
| Dec. 14 | 13:00-14:20 | Room 409 | LCT1 | High Quality Displays (FFS/IPS) |
| Dec. 14 | 14:50-16:10 | Room 409 | LCT2 | High Quality Displays (High Contrast, Transparent/Switchable) |
| Dec. 14 | 16:40-17:40 | Room 409 | LCT3 | LC Technologies for AR/VR and Lidars I |
| Dec. 15 | 13:00-14:20 | Room 409 | PRJ4/LCT4 | Device and Optical Component |
| Dec. 15 | 16:40-17:40 | Room 411 | LCT5/FLX3 | Flexible and Improved Displays |
| Dec. 16 | 9:00-10:00 | Room 405 | LCT6 | LC Technologies for AR/VR and Lidars II |
| Dec. 16 | 10:50-12:10 | Room 405 | LCT7 | Emerging Applications |
| Dec. 15 | 15:10-16:30 | Room 501 | LCTp1 | LC Optics and Devices |
| Dec. 15 | 15:10-16:30 | Room 501 | LCTp2 | Machine Learning for LCs |
LCT1: High Quality Displays (FFS/IPS)
Dec. 14 13:00-14:20 Room 409
Chair: Takahiro Ishinabe (Tohoku Univ.)
Co-Chair: Shinichiro Oka (Japan Display)
| LCT1-1
13:00 |
Invited High Picture Quality Technology Development of ADS Pro 8K Panel *Dongchuan Chen1, Jianhua Huang1, Yingying Qu1, Lei Guo1, Lifeng Lin1, Yuanhui Guo1, Lijun Xiao1, Ke Dai1, Peng Jiang1, Yinlong Zhang1, Yujie Gao1, Yanping Liao1, Seungmin Lee1, Zhangtao Wang1, Xibin Shao1 1. BOE (China) |
| This paper develops an overall solution for extreme high picture quality based on ADS Pro technology, which includes high CR negative LC material, oblique angle optical compensation film, low reflectance film, CF and BLU spectral matching schema, new OD technology, etc. Based on this total solution, we acquire native CR close to 3000:1, the L0 light leakage in the oblique angle reducing by 80% reflectance lower... | |
| LCT1-2
13:20 |
Invited An Ultra-Low Power FFS LCD Using Zero-Anchoring Interface *Hiroaki Asagi1, Koji Murata1, Kazuhito Matsumoto1, Yusuke Nishihara1, Yoshito Hashimoto1, Kiyoshi Minoura1 1. Sharp Display Technology Corporation (Japan) |
| Using a novel zero-anchoring interface, we have realized an ultra-low power consumption FFS LCD with low voltage drive and higher transmittance. We have improved the response time, image sticking and other optical performance. It is also indicated that zero-anchoring technology is useful for reflective FFS as well as transmissive FFS. | |
| LCT1-3
13:40 |
Invited Simulation Study on the Relationship Between Flicker Phenomena and Interface Polarization in Fringe-Field Switching Liquid Crystal Display *Yukio Hirano1 1. JNC Petrochemical Corporation (Japan) |
| Flicker phenomena in fringe-field switching liquid crystal displays (FFS-LCDs) were studied by finite element method simulations of the transport phenomena of ions, flexoelectric effect, and interfacial polarization. It was found that the influential cause of the flicker phenomena is the charge accumulated at the interface between LC and polyimide material. | |
| LCT1-4
14:00 |
Invited UBplus/UB-FFS – Premium Performance for Liquid-Crystal TV and IT Displays *Peter Zhao1, Lawrence Huang1, Sven Christian Laut2, Ji-Hun Jung1 1. Merck Display Materials (Shanghai) Co., Ltd (China), 2. Merck KGaA Darmstadt, Germany (Germany) |
| Premium displays that offer outstanding characteristics are becoming more important in LCD market. Globally, researchers are looking for ways to improve contrast, transmittance and switching speed while keep the high reliability. UB (Ultra Bright)-technology can increase panel transmittance by using negative LC mixtures compared with traditional FFS Mode. In this paper we demonstrate the advantage of UB-LC technology for TV as well as IT applications. |
LCT2: High Quality Displays (High Contrast, Transparent/Switchable)
Dec. 14 14:50-16:10 Room 409
Chair: Seiji Shibahara (Sony)
Co-Chair: Takahiro Ishinabe (Tohoku Univ.)
| LCT2-1
14:50 |
Invited Development of the 2D-UV2AⅡLCD Mode for Field Sequential Color See-Through *Shinichi Terashita1, Kouichi Watanabe1, Tsuyoshi Okazaki1, Masamitsu Kobayashi1, Akihiro Hada1, Fumikazu Shimoshikiryoh1 1. Sharp Display Technology Corporation (Japan) |
| We have developed the 2D-UV2AⅡ LCD mode with see-through performance combined with field sequential color (FSC) technology. The prototype FSC-LCDs have clear, blur-free see-through performance and the following overwhelmingly superior display performance: a liquid crystal mode efficiency (transmittance) of over 97%, color gamut of 93.5% of NTSC with FSC drive, contrast of over 16,000, and excellent viewing angle characteristics. | |
| LCT2-2
15:10 |
Contrast Ratio Improvement of Optically Switchable Transparent Liquid Crystal Display *Shunta Nabetani1, Maki Shimada1, Ryota Maehashi1, Fuminori Satou1, Yoshimi Ohta1, Tsuyoshi Fukaminato2, Seiji Kurihara2 1. Nissan Motor Co., Ltd. (Japan), 2. Kumamoto University (Japan) |
| We combined a photochromic film with an optically switchable transparent display. The display consists of a PNLC and light sources. Post ultraviolet irradiation, the PNLC and photochromic films changed from the initial transparent state to the screen and dimming states, respectively. Photochromic films block background light and improve contrast ratio. | |
| LCT2-3
15:30 |
A Novel Electrically Switchable White Privacy Display Device Wenqi Zhou1, *Minglong Wang1, Qiong Song1, Yan Yang1, Caijiao Zhong1, xianyan Yang1 1. XiaMen Tianma Microelectronics Co.,Ltd. (China) |
| This paper introduces an e-Privacy display, electrically switchable between wide viewing angle (share) mode and narrow viewing angle (privacy) mode. Pixel electrodes are divided into two domains, one part is the normal display area, and the other part is the privacy area. By controlling the privacy area electrode, viewing angle switching can be realized. | |
| LCT2-4L
15:50 |
A Novel High Contrast Ratio and Color Gamut LCD *Xiaogang Hu1, Haiying Qiu1, Jie Lv1, Jiahe Cheng1, Xugang Luo2, Zhicong Kang1, Zhenghong Chen1 1. Chongqing HKC Optoelectronics Technology co., ltd. (China), 2. Chuzhou HKC Optoelectronics Technology Co., Ltd. (China) |
| We reported a novel LCD in this paper which characterized with high contrast ratio of 1000000:1 and color gamut 100%DCI-P3 by dual cell and mini LED backlight designation. The high contrast ratio and color gamut were attributed to local dimming and QD film applying. The chip size decreases optical distance and pitch of mini LED beads was only 3.15mm. thus, the novel LCD was thinner than... |
LCT3: LC Technologies for AR/VR and Lidars I
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 14 16:40-17:40 Room 409
Chair: Yukihiro Kudoh (Kogakuin Univ.)
Co-Chair: Masaru Inoue (TOYOTech LLC)
| LCT3-1
16:40 |
Invited Ghost Analysis in Thin and Lightweight Head-Mounted Displays with Holographic Optics *Yasuhiro Takahashi1, Koichi Okuda1, Hiroaki Kijima1, Jin Hirosawa1, Shinichi Komura1 1. Japan Display Inc. (Japan) |
| To improve the image quality of thin and lightweight head-mounted displays with hologram optics and polarized laser backlight liquid crystal displays, we analyzed ghosts of the fabricated benchtop prototype. The ghosts are caused by the reflections on the surfaces of quarter waveplates and holographic optical element. Based on the analysis, we obtained a clear image by suppressing surface reflections. | |
| LCT3-2
17:00 |
Invited Chiral Liquid Crystal Diffractive Gratings Based on Photoalignment for Application in Augmented Reality Devices *Kristiaan Neyts1, Brecht Berteloot1, Migle Stebryte1, Jeroen Beeckman1, Inge Nys1 1. Ghent University (Belgium) |
| Chiral nematic liquid crystals with a short pitch spontaneously form a helical structure that reflects visible light. By periodic photoalignment, the axis of the helical structure may be tilted. This allows to realize flat optical diffractive gratings or lenses that can be used in augmented reality. | |
| LCT3-3
17:20 |
Estimation of Incident Angle Dependent Reflection Wavelength of Patterned Cholesteric Liquid Crystal Film by Using a Geometric Method *Ryotaro Ozaki1, Kohdai Saiki1, Kazunori Kadowaki1 1. Ehime University (Japan) |
| The bandwidth of a patterned cholesteric liquid crystal is analyzed using a geometric method in which the short and long wavelength edges of selective reflection are estimated by the average refractive index of the optical path. The estimated wavelength edges approximately agree with those obtained by the FDTD method. |
PRJ4/LCT4: Device and Optical Component
Dec. 15 13:00-14:20 Room 409
Chair: Cuypers Dieter (Ghent Univ., CMST)
Co-Chair: Hiroyuki Yoshida (Osaka Univ.)
| PRJ4/LCT4-1
13:00 |
Invited Adaptive Beam-Steering LiDAR using a Liquid-Crystal Integrated Optical Phased Array *Kazuki Nakamura1, Kenji Narumi1, Kohei Kikuchi1, Yumiko Kato1, Akira Hashiya1, Takaiki Nomura1, Masahiko Tsukuda1, Yoshiki Sasaki1, Kazuya Hisada1, Yasuhisa Inada1 1. Panasonic Holdings Corp. (Japan) |
| We have developed an adaptive beam-steering LiDAR using a liquid-crystal tunable on-chip beam-steering device. 3D target tracking is demonstrated by aiming the beam at objects detected with a camera. | |
| PRJ4/LCT4-2
13:20 |
Adaptive Liquid Crystal Lenses for AR/VR *Dieter Cuypers1, Herbert De Smet1 1. imec / Ghent University (Belgium) |
| Augmented and Virtual Reality systems have complex optical architectures. In many of these, adaptive lenses are used or are envisaged to be used to improve image perception quality. The use of tunable liquid crystal lenses in these systems is discussed. | |
| PRJ4/LCT4-3
13:40 |
A Low Speckle Laser Pico-Projector with Dynamic Light Scattering Liquid Crystal Devices *Guan Chih Chen1, Yong Han Chen1, Jui Wen Pan1, Shie Chang Jeng1 1. National Yang Ming Chiao Tung University (Taiwan) |
| Dynamic light scattering liquid crystal (DLS-LC) device with a low driving field is used to reduce the speckle in the laser pico-projector. The DLS-LC device produces the time-varying scattering patterns, which can eliminate the degrees of temporal and spatial coherences of the laser and achieve a very effective reduction in the speckle contrast. | |
| PRJ4/LCT4-4L
14:00 |
Invited Transmissive Compact Spatial Polarization Converter to Generate Polarization Distribution with Arbitrary Phase and Polarization on a Poincaré Sphere *Keisuke Yoshiki1, Takeshi Yamamoto2 1. Univ. of Hyogo (Japan), 2. Oasa Electronics Co.,Ltd (Japan) |
| We have developed a transmissive optical modulator with arbitrary control of polarization and phase. The phase control range exceeds 6π, and the polarization is fully controllable on Poincaré sphere. The installation is completed by simply inserting the device into the optical path of an existing optical device. This paper describes its principle, performance, and potential application to high power lasers. |
LCT5/FLX3: Flexible and Improved Displays
Dec. 15 16:40-17:40 Room 411
Chair: Mitsuru Chida (Sharp Display Tech.)
Co-Chair: Munehiro Kimura (Nagaoka Univ. of Tech.)
| LCT5/FLX3-1
16:40 |
Solutions to Optimize the Diffraction of LCD CUP *Li Yaying1, Chen Muqing1, Xu Jialing1, Liang Zhixing1, Yang Yan1, Zhong Caijiao1, Yang Xianyan1 1. Tianma Microelectronics Co.,Ltd. (China) |
| Diffraction optimization is one of the hardest challenges in CUP (camera under panel) technology. The regular patterns on the panel lead to diffraction. Compared with OLED, LCD CUP faces more complex diffraction. In this paper, the mechanism of LCD CUP diffraction and its potential design scheme are emphatically analyzed. | |
| LCT5/FLX3-2
17:00 |
Preliminary Experiment on Fast Response Liquid Crystal Drive by Photo-Induced Flexoelectric Effect *Koki Sato1, Sakunosuke Abe1, Ryoma Terasawa1, Munehiro Kimura1 1. Nagaoka University of Technology (Japan) |
| Aiming for realizing ultrafast response by rotating the long axis of the liquid crystal molecule, novel driving scheme based on photo-induced flexoelectric effect are investigated. As a fundamental experiment, response time of nematic liquid crystal mixed with p-dimethylamino-azobenzene are measured with using sandwiched cell whose inner bottom surface has groove structure. | |
| LCT5/FLX3-3
17:20 |
Biaxially Formed Flexible Organic Electronics for 3D LC Optics and Displays Andrew Russell1, Ashley James1, May Wheeler1, *Paul Cain1, William H Reeves1 1. FlexEnable (UK) |
| The low temperature processes of organic electronics (<100°C) allow low Tg flexible substrates to be used (Tg<150°C). We report on recent developments which show that flexible OTFT arrays, liquid crystal cells and Organic LCDs (OLCDs) can be biaxially thermoformed to spherical and other surfaces of complex curvature. |
LCT6: LC Technologies for AR/VR and Lidars II
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 16 9:00-10:00 Room 405
Chair: Hiroyuki Okada (Univ. of Toyama)
Co-Chair: Michinori Honma
| LCT6-1
9:00 |
Invited Detailed Investigation of Causes of Image Degradation in A Large Area Liquid Crystal Lens with Concentric Electrodes Amit Bhowmick1, Liwei Li1, Afsoon Jamali2, Doug Bryant1, Sandro Pintz2, *Philip Bos1 1. Kent State University (United States of America), 2. Meta (United States of America) |
| Liquid crystal based lenses with concentric electrodes are needed for applications where high optical quality is required. To achieve that quality , the sources of performance degradation and methods to overcome them are presented. | |
| LCT6-2
9:20 |
Invited Next Generation Material for Head-Mounted Devices *Masahiko Okamura1, Owain Parri2, Sarabjot Kaur2, Stephen Mulcahy2, Ben Snow2, Kevin Adlem2, Ian Sage3, Izumi Saito4, Atsuko Yamamoto1, Hiromoto Sato1 1. Merck Electronics (Japan), 2. Merck Performance Materials (UK), 3. Abelian Services (UK), 4. Merck KGaA (Germany) |
| The recent drive towards high performance Augmented Reality and Virtual Reality headsets has generated new demand for materials designed for the specific requirements of this technology. This paper will present the challenges and status of new materials for this application. Materials for both passive and active components will be discussed. | |
| LCT6-3
9:40 |
On the Fabrication Improvements of Liquid Crystal Beam Steering Device for LFVR System *Yu-Min Chen1, Chung-Jen Ou2, Ming-Wei Tsai2, Chien-Chih Chen2, Chih-Hung Lu2, Pei-Ting Chen2, Yen-Ting Wang3, Huang-Ming Philip Chen1 1. National Yang-Ming Chiao-Tung University (Taiwan), 2. Coretronic Corporation (Taiwan), 3. Showa Denko International (Taiwan) Co., Ltd (Taiwan) |
| Liquid Crystal Beam Steering (LCBS) device has been prove to be a promising device for LFVR eye box extension. The manufacturing process of LCBS components requires special electrode and electric field settings, and many difficulties are encountered during the development. This paper will show these difficulties and improvement methods. |
LCT7: Emerging Applications
Dec. 16 10:50-12:10 Room 405
Chair: Fumito Araoka (RIKEN)
Co-Chair: Hiroyuki Yoshida (Osaka Univ.)
| LCT7-1
10:50 |
Invited Creating / Hiding Information with Different Elastic Property of Liquid Crystal Phases Jeong-Seon Yu1, *Jong-Hyun Kim1 1. Chungnam National University (Korea) |
| Liquid crystals have different elastic properties depending on phases. Twist deformation is allowed in nematic, but not in smectic phase. We showed devices that can create, hide, and manage information using the difference of elastic properties. Information is created in the alignment layer in smectic, expressed as texture in nematic. | |
| LCT7-2
11:10 |
Invited Application of Liquid Crystals to Mechanical Engineering *Shigeomi Chono1, Tomohiro Tsuji1 1. Kochi University of Technology (Japan) |
| We introduce the application of liquid crystals to machine elements, such as linear actuators and motors. Due to the high shape adaptability of liquid crystals, these elements exhibit the unique characteristics that are not achieved by conventional machine elements. | |
| LCT7-3
11:30 |
Rubbing-Free Planar Alignment of Nematic Liquid Crystal on Organic Single Crystal Rubrene *Pravinraj Selvaraj1,2, Mareena Antony1, Chia-Yi Huang2, Yu-Wu Wang1, Jyh-Pin Chou1, Che-Ju Hsu1, Chi-Yen Huang1 1. National Changhua University of Education (Taiwan), 2. Tunghai University (Taiwan) |
| High-quality LC alignment on organic SCR has been examined and used to manufacture rubbing-free LC devices. Here, the first contact geometry of the LCs in the SCR determines LC orientation. SCR cell performs wider thermal tolerance, better electrical stability, Higher VHR, faster switching time, and lower operating voltage. | |
| LCT7-4L
11:50 |
Design of Millimeter-Wave Transmitting Liquid Crystal Cells with Orthogonal Wire Grid Electrodes *Michinori Honma1, Ryota Ito1, Toshiaki Nose1 1. Akita Prefectural University (Japan) |
| We propose a simple design scheme for orthogonally combined wire grid liquid crystal (LC) devices. In this scheme, the LC device is regarded as a combination of two wire grid polarizers. The fabricated device exhibited transmittance that was significantly larger than the aperture ratio, indicating anomalous transmission properties. |
LCTp1: LC Optics and Devices
Dec. 15 15:10-16:30 Room 501
| LCTp1-1 | Speckle Noise Reduction of Laser Light by Optimal Electroconvection Pattern in Nematic LCs *Mitsuhiro Akimoto1, Eriko Fukuda2 1. Sanyo-Onoda City University (Japan), 2. Kyushu Sangyo University (Japan) |
| In the present study, the performance of a LC-based speckle reducer device based on the electroconvection phenomena in nematic LC is demonstrated. A low birefringence of LC material positively contributes to the reduction of laser speckle noise without deteriorating the beam quality of laser light. | |
| LCTp1-2 | Analysis of Influencing Factors of Gamma in TFT LCD VA Display *Hongyan Chang1 1. Chuzhou HKC Optoelectronics Technology Co. Ltd. (China) |
| In this paper, we have found several important factors affecting gamma through simulation data and experimental comparison . so as to quickly analyze which process is causing gamma shift. And without auto P gamma, how to control the gamma specification within 2.2±0.3 through process control. | |
| LCTp1-3 | Solutions for Horizontal light and Dark Lines Issue of Z-zig pixel arrangement Liquid Crystal Display *Shuai Shi Huang1 1. Chuzhou HKC Optoelectronics Technology Co. Ltd. (China) |
| Z-zig pixel arrangement is a common type in the field of LCD,it has good anti-flicker performance and low power consumption. But, horizontal light and dark lines issue will appear because this pixel arrangement. There are two types horizontal light and dark lines,one is appear at gray level pattern,the other at color mixed pattern. | |
| LCTp1-4 | Research on LCD Moiré Based on Fast Fourier Transform *Wenqi Zhou1, Minglong Wang1, Qiong Song1, Yan Yang1, Caijiao Zhong1, Xianyan Yang1 1. Xiamen Tianma Microelectronics Co., Ltd. (China) |
| This article reports a research method of LCD moiré based on Fast Fourier Transform (FFT). We use programmable software to build a complete moiré simulation model, and established an evaluation system. This method has been verified to have high accuracy in moiré simulation, and because it is based on image processing, the moiré results can be quickly obtained, thus the design efficiency can be greatly improved. | |
| LCTp1-5 | Photochromic Properties of Liquid Crystalline Dithienylperfluorocyclopentenes for Photo- and Electro-Tunable Coloration *Hiroyuki Yoshida1, HaoChun Yang2, Hanwen Kuo2, HsiuHui Chen2 1. Osaka University (Japan), 2. National Taipei University of Technology (Taiwan) |
| Photochromic materials, which undergo a structural transition upon light absorption such that their colour changes, are attractive materials from the point of view of optical applications. Here, a series of Dithienylperfluorocyclopentenes with high miscibility in standard nematics are presented and their electro-optic properties characterized. | |
| LCTp1-6 | Numerical Modeling for the Beam Steering Systems based on the LC Polarization Grating *Noriyoshi Maeda1, Atsushi Ikemura1, Michio Kitamura1 1. SHINTECH, Inc. (Japan) |
| We demonstrated the evaluation of the beam steering system including liquid crystal polarization grating (LCPG) by numerical modeling. The optical response is calculated by rigorous coupled-wave analysis which is best suited for grating analysis. We show the validity of the numerical simulation for designing LCPG devices. | |
| LCTp1-7L | Thick LC Devices Stabilized by Polymer Wall Surface for Millimeter Wave Control *Tomoya Haneda1, Takahiro Ishinabe1, Yosei Shibata1, Hiroyasu Sato1, Qiang Chen1, Hideo Fujikake1 1. Tohoku University (Japan) |
| We propose a wall-type LC device for thick LC devices for millimeter-wave phase shift to speed up the fall response. As a result, we have revealed the alignment state of LC molecules inside the polymer wall by optical evaluation. | |
| LCTp1-8L | Optical Properties of Nematic Liquid Crystal/ Polyfluorene Gel Devices *Asuka Yagi1, Michinori Honma1, Ryota Ito1, Toshiaki Nose1 1. Akita Prefectural University (Japan) |
| The relationship between light transmittance and the induced gel network structure in liquid crystal (LC)/ polyfluorene gel was investigated. LC cells were fabricated at different polyfluorene concentrations and cooling rates; these parameters strongly affect the induced network structure, contrast ratio, and response time. |
LCTp2: Machine Learning for LCs
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 15 15:10-16:30 Room 501
| LCTp2-1L | Circuit Simulation Model of Liquid Crystal Capacitor Using Reservoir Computing Approach *Makoto Watanabe1,2, Kiyoshi Kotani1, Yasuhiko Jimbo1 1. The University of Tokyo (Japan), 2. Silvaco Japan Co., Ltd. (Japan) |
| Non-linear and dynamic liquid crystal capacitors have been implemented into a circuit simulator using a machine learning framework called reservoir computing handling time series data. Sufficient accuracy has been obtained at time steps determined by the circuit simulator, which is different from those in the training phase of the model. |
Workshop on Active Matrix Displays
| Dec. 14 | 13:00-14:20 | Room 405 | AMD1 | Anniversary Talk Session: Distinguished Award Winners for Organic and Oxide TFTs |
| Dec. 14 | 14:50-16:10 | Room 405 | AMD2 | Oxide TFT |
| Dec. 14 | 16:40-17:40 | Room 405 | AMD3 | Novel TFT Application |
| Dec. 15 | 14:50-16:10 | Room 413 | AMD4 | Micro/Mini LED Display |
| Dec. 16 | 9:00-10:20 | Room 409 | AMD5 | Emerging TFT (1) |
| Dec. 16 | 10:50-11:50 | Room 409 | AMD6 | Emerging TFT (2) |
| Dec. 16 | 13:30-14:30 | Room 409 | AMD7 | Advanced TFT Technology |
| Dec. 15 | 10:40-12:00 | Room 501 | AMDp1 | Active Matrix Device (1) |
| Dec. 15 | 13:20-14:40 | Room 501 | AMDp2 | Active Matrix Device (2) |
| Dec. 15 | 17:00-18:20 | Room 501 | OLEDp2/AMDp3 | AMOLED Displays |
AMD1: Anniversary Talk Session: Distinguished Award Winners for Organic and Oxide TFTs
Dec. 14 13:00-14:20 Room 405
Chair: Hiroki Hamada (Kindai Univ.)
Co-Chair: Toshiaki Arai (JOLED)
| AMD1-1
13:00 |
Invited Transient and Modulation Spectroscopies for the Characterization of Liquid Crystal and Organic Light-Emitting Diodes Displays *Hiroyoshi Naito1 1. Osaka Metropolitan University (Japan) |
| Transient and modulation spectroscopies for the characterization of liquid crystal and organic light-emitting diodes displays that we have developed are reviewed. The information obtained from the spectroscopies is useful for the understanding of the device operation mechanisms and for the design of display devices. | |
| AMD1-2
13:20 |
Invited Inkjet Printing of Single-Crystal Films of Organic Molecular Semiconductors for Flexible and Printed Electronics *Hiromi Minemawari1 1. National Institute of Advanced Industrial Science and Technology (AIST) (Japan) |
| This paper summarizes our works on printed electronics based on organic semiconductors (OSCs) focusing on OSCs with high layered crystallinity. Trough the development of unique inkjet printing technique and OSCs compatible with this technique, we have succeeded in fabrication of single-crystal films and dramatically improving the device performance. | |
| AMD1-3
13:40 |
Invited Electronic Structures and Defects Analysis of Amorphous Oxide Semiconductor toward IGZO Display Application *Keisuke Ide1 1. Tokyo Institute of Technology (Japan) |
| I am very honored to receive the 2022 Peter Brody Prize for my research on amorphous oxide semiconductors and contributions to display applications. The citation title was “for his pioneering research on defect analysis of amorphous oxide semiconductors (AOSs) and developments of novel active-matrix displays (AMDs) using indium gallium zinc oxide (IGZO)”. I am grateful to the many people who supported me to conduct the research... | |
| AMD1-4
14:00 |
Invited The Early Work on Sputtering Formation of Amorphous IGZO (In-Ga-Zn-O) Channel and SnO Channel TFTs *Hisato Yabuta1,2, Ryo Hayashi1, Hideya Kumomi1,3 1. Canon Inc. (Japan), 2. Kyushu University (Japan), 3. Tokyo Institute of Technology (Japan) |
| We will talk about the early work on sputtering formation of amorphous IGZO (In-Ga-Zn-O) channel and SnO TFTs. |
AMD2: Oxide TFT
Dec. 14 14:50-16:10 Room 405
Chair: Susumu Horita (JAIST)
Co-Chair: Hiroshi Tsuji (NHK)
| AMD2-1
14:50 |
Invited High-mobility (>100 cm2V−1s−1) In2O3:H Thin-film Transistors by Solid-phase Crystallization *Yusaku Magari1, Wenchang Yeh2, Mamoru Furuta3 1. Hokkaido University (Japan), 2. Shimane University (Japan), 3. Kochi University of Technology (Japan) |
| We propose a simple process to obtain high-performance thin-film transistors (TFTs), namely hydrogenated polycrystalline In2O3 (In2O3:H) TFTs grown via the low-temperature solid-phase crystallization (SPC) process. In2O3:H TFTs fabricated at 300 °C exhibit superior switching properties with field-effect mobility of 139.2 cm2V−1s−1, a subthreshold swing of 0.19 Vdec−1, and a threshold voltage of 0.2 V. | |
| AMD2-2
15:10 |
Invited Breaking the Mobility-Stability Trade-Off in Oxide TFTs *Junghwan Kim1, Yu-Shien Shiah1, Katsumi Abe2, Hideo Hosono1,3 1. Materials Research Center for Element Strategy, Tokyo Institute of Technology (Japan), 2. Silvaco Japan Co., Ltd. (Japan), 3. wpi-MANA, National Institute for Materials Science (Japan) |
| In this study, we show the sensitivity of amorphous oxide semiconductors to externally introduced impurities and defects is determined by the location of the conduction band minimum and the relevant doping ability. Based on these insights, we develop a highly stable ITZO TFT with mobility of 70 cm2/Vs. | |
| AMD2-3
15:30 |
Electric Field Thermopower Modulation Analyses of Transistor Characteristics of High-mobility In-Sn-Zn-O Thin Film Transistors *Hui Yang1,2, Yuqiao Zhang3,4, Yasutaka Matsuo1, Yusaku Magari1,5, Hiromichi Ohta1 1. RIES-Hokkaido University (Japan), 2. Beijing Jiaotong University (China), 3. Jiangsu University (China), 4. Foshan Institute for New Materials (China), 5. Shimane University (Japan) |
| In-Sn-Zn-O thin film transistors (ITZO-TFTs) have attracted increasing attention because they show high μFE. Here, we systematically investigated the origins of the high μFE of ITZO-TFTs by thermopower modulation. The lighter m* (~0.11 m0) and longer τ (~3.6 fs) than IGZO are the origins of the high μFE of ITZO-TFTs. | |
| AMD2-4L
15:50 |
Development of High Mobility Oxide Semiconductor Sputtering Target *Shigeki Tokuchi1, Ryo Shiranita1, Kyosuke Teramura1, Tomoyasu Yano1, Mamoru Furuta2 1. MITSUI MINING & SMELTING CO.,LTD. (Japan), 2. Kochi University of Technology (Japan) |
| We have investigated oxide semiconductor material In-Zn-O-X system to achieve high electron mobility. By choosing appropriate X material and optimizing the composition, we have realized Thin-Film Transistor (TFT) with its field effect mobility over 60 cm2/vs, which is suitable to high-definition displays. |
AMD3: Novel TFT Application
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 14 16:40-17:40 Room 405
Chair: Hideya Kumomi (Tokyo Tech)
Co-Chair: Yujiro Takeda (Sharp Display Tech.)
| AMD3-1
16:40 |
Invited An Indirect-Conversion Flat-Panel X-Ray Detector Based on Amorphous Silicon 3-D One-Transistor Active Pixel Sensor *Kai Wang1, Yihong Qi1 1. Sun Yat-sen University (China) |
| An APS has been proposed for achieving high SNR ratio in X-ray detectors. Since 2015, we have developed a one-TFT APS to obtain high resolution and gain. In this work, a detector with an array of 3840×3072 was developed with an image sensitivity of 280lsb/μGy and a resolution of 6.71lp/mm. | |
| AMD3-2
17:00 |
ZnON Thin Film and Its Impact on the IGZO Phototransistor *Yuseong Jang1, Kyeong Soo Kang1, Soo-Yeon Lee1 1. Seoul National University (Korea) |
| We fabricated IGZO/ZnON phototransistor by adopting in-situ deposition of IGZO and ZnON thin films. ZnON thin film, deposited using ZnO ceramic target, successfully enhanced the recombination of VO2+ states in IGZO so that negligible persistent photoconductivity (PPC) effect was achieved. | |
| AMD3-3
17:20 |
InGaZnO Synaptic Thin-Film Transistor with AlOx Dielectric *Taebin Lim1, Jinbaek Bae1, Jiseob Lee1, Jin Jang1 1. Kyung Hee University (Korea) |
| We demonstrate an InGaZnO (IGZO) synaptic thin-film transistor (TFT) fabricated by solution process. To mimic the electrical properties of biological synapses such as excitatory postsynaptic potential (EPSC), long-term potentiation (LTP), the AlOx is used as a charge trapping layer of the IGZO TFT. |
AMD4: Micro/Mini LED Display
Special Topic of Interest on Micro/Mini LEDs
Dec. 15 14:50-16:10 Room 413
Chair: Masahide Inoue (Huawei Techs. Japan)
Co-Chair: Tokuro Ozawa (Kyocera)
| AMD4-1
14:50 |
Invited Three-dimensional Monolithic Micro-LED Display Driven by Atomically Thin Transistor Matrix *Xinran Wang1,2, Wanqing Meng1, Feifan Xu1,2, Zhihao Yu1,3, Tao Tao1,2, Bin Liu1,2, Yi Shi1,2, Rong Zhang1,2,4,5 1. Nanjing University (China), 2. Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials (China), 3. Nanjing University of Posts and Telecommunications (China), 4. Xiamen University (China), 5. Institute of Future Display Technology (China) |
| Two-dimensional materials are promising candidates for future electronics due to unmatched device performance at atomic limit and low-temperature heterogeneous integration. Here, we show the integration of large-area MoS2 thin-film transistors (TFTs) with nitride micro light-emitting diodes (LEDs) through a BEOL process and demonstrate high-resolution displays at 1270 PPI. | |
| AMD4-2
15:10 |
Invited Monolithic Integration of Full-Color Micro-LED Display Using MoS2 TFTs *Jong-Hyun Ahn1 1. Yonsei University (Korea) |
| Large-scale growth of two-dimensional (2D) materials and their subsequent integration with III-V compound semiconductors is one of the major obstacles for two-dimensional materials implementation in optoelectronics applications. In this talk, I present a direct growth of transition metal chalcogenides on an III-V compound semiconductor compatible with a batch microfabrication process. We show how a thin film of molybdenum disulfide (MoS2) can be directly synthesized on... | |
| AMD4-3
15:30 |
Invited Micro Sensor Array for Eye-tracking Application Based on Mini/Micro Light-Emitting Diodes *Yen-Hsiang Fang1, Cheng-Jhih Luo1, Chun-Wen Chu1, Kai-Ling Liang1, Chien-Chung Lin1,2, Chia-Hsin Chao1 1. Industrial Technology Research Institute (Taiwan), 2. National Taiwan University (Taiwan) |
| The present study contributes to our recent efforts in the Human-machine interface based on mini/micro-LED technologies. By operating mini/micro-LED as light sensors, we demonstrate a sensor array type glass capable of gaze sensing at a high rate. It has the potential enhancing experiences for HMD. | |
| AMD4-4
15:50 |
Hybrid-integrated Monolithic Active-matrix Blue/Red Dual-color Micro-LED Micro-display *Longheng QI1, Peian LI1, Kei May LAU1 1. The Hong Kong University of Science and Technology (Hong Kong) |
| A prototype of hybrid-integrated monolithic active-matrix blue/red dual-color micro-LED micro-display was demonstrated by flip-chip bonding of GaN-on-Si blue micro-LED array and AlGaInP red micro-LED array. This integration method is promising for high brightness, high color performance micro-LED micro-display application in the future. |
AMD5: Emerging TFT (1)
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 16 9:00-10:20 Room 409
Chair: Hyun Jae Kim (Yonsei Univ.)
Co-Chair: Keisuke Omoto (Apple)
| AMD5-1
9:00 |
Invited Nanoscale Flexible Low-Voltage Organic Thin-Film Transistors *Hagen Klauk1 1. Max Planck Institute for Solid State Research (Germany) |
| Organic transistors with channel lengths and gate-to-contact overlaps as small as 100 nm have been fabricated on polymeric substrates using electron-beam lithography. The transistors have on/off current ratios up to 1010, subthreshold swings as small as 70 mV/decade, and signal delays as small as 14 ns. | |
| AMD5-2
9:20 |
Invited Interface-Modulated Solid-Phase Crystallization of Sn-Doped Ge Ultra-thin Films for Advanced TFT *Taizoh Sadoh1, Takaya Nagano1, Taishiro Koga1, Kenta Moto1,2, Keisuke Yamamoto1 1. Kyushu University (Japan), 2. JSPS Research Fellow (Japan) |
| High-speed fully-depleted thin-film transistors (TFTs) are required for next-generation electronics, such as three-dimensional large-scale integrated circuits and advanced system-in-displays. For this purpose, a novel growth technique, i.e., interface-modulated solid-phase crystallization, of Sn-doped Ge has been developed. This achieves high carrier mobility (~100cm2/Vs) of ultrathin films (20nm) on insulators. | |
| AMD5-3
9:40 |
A Novel Flexible Display Pixel Circuit Using Amorphous Metal Thin Film Devices *John Brewer1 1. Amorphyx Inc. (United States of America) |
| A unique flat panel display pixel circuit incorporating the specific benefits of amorphous metal-based thin film electronic devices is presented. The circuit and devices are proposed as an improvement to low temperature polycrystalline silicon plus oxide transistor technology (“LTPO”) for low power variable refresh rate displays. An overview of amorphous metal based nonlinear resistors, amorphous metal thin film transistors, and amorphous metal top emission organic... | |
| AMD5-4L
10:00 |
Invited 1.5-inch, 3207-ppi OLED Display Enabled by Monolithic Integration of OSFETs and Si CMOS *Minato Ito1, Munehiro Kozuma1, Toshihiko Saito1, Hidetomo Kobayashi1, Ryota Hodo1, Tsutomu Murakawa1, Hitoshi Kunitake1, Tomoya Aoyama1, Shih-Ci Yen2, Chuan-Hua Chang2, Wen-Hsiang Hsieh2, Hiroshi Yoshida2, Min-Cheng Chen2, Ming-Han Liao3, Shou-Zen Chang2, Shunpei Yamazaki1 1. Semiconductor Energy Laboratory Co. Ltd. (Japan), 2. Powerchip Semiconductor Manufacturing Corporation (Taiwan), 3. National Taiwan University (Taiwan) |
| Oxide semiconductor field-effect transistors (OSFETs) can be stacked over silicon (Si) field-effect transistors (FETs). We used this technology to form Si-oxide semiconductor composite LSI and prototyped an OLED display in which Si FETs and OSFETs are monolithically stacked. This stacking enabled a larger screen and a lower power driver. |
AMD6: Emerging TFT (2)
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 16 10:50-11:50 Room 409
Chair: Yosei Shibata (Tohoku Univ.)
Co-Chair: Hiromi Minemawari (AIST)
| AMD6-1
10:50 |
Invited Development of High-Performance Metal Halide Perovskite Thin-Film Transistors *Yong-Young Noh1 1. Pohang University of Science and Technology (POSTECH) (Korea) |
| In this talk, I will talk about the tin-based 2D and 3D perovskite semiconductors as promising p-type halides. I will introduce inorganic perovskite thin-film transistors with exceptional performance using high-crystallinity and uniform cesium-tin-triiodide-based semiconducting layers with moderate hole concentrations and superior Hall mobilities, which are enabled by the judicious engineering of film composition and crystallization. The optimized devices exhibit high field-effect hole mobilities of over... | |
| AMD6-2
11:10 |
Invited Impact of Cyber-Physical Systems on Research and Development of Semiconductor Devices *Hiroshi Ikenoue1, Keita Katayama1, Yoshiaki Kakimoto1, Toshifumi Kikuchi1, Daisuke Nakamura1 1. Kyushu University (Japan) |
| To prove the acceleration of R&D by cyber-physical systems (CPSs), we are challenging to develop semiconductor manufacturing system for novel semiconductor devices by using CPSs such as deep learning. In this presentation, we report estimation of the device characteristics of low temperature polycrystalline silicon thin film transistors through deep learning. | |
| AMD6-3L
11:30 |
TFT-type Strain Sensors for Implementing Hidden Pixel Structure in Active-Matrix Stretchable Displays *Won Kyung Min1, Jong Bin An1, Dong Hyun Choi1, Jusung Chung1, Gwan In Kim1, Moon Ho Lee1, Seok Gyu Hong1, Hyun Jae Kim1 1. Yonsei University (Korea) |
| In this study, we proposed a strain-sensor-in-pixel (S-SIP) system by introducing hidden pixels that are activated only when the display is stretched to maintain the pixel density. For the system, the strain-sensor integrated InGaZnO thin-film transistors (TFTs) were fabricated to control the TFT on/off operation depending on the stretching state. |
AMD7: Advanced TFT Technology
Dec. 16 13:30-14:30 Room 409
Chair: Toshiaki Arai (JOLED)
Co-Chair: Kenichi Takatori (Huawei Techs. Japan)
| AMD7-1
13:30 |
Invited Driving Methods for Improving Image Quality in LTPS and LTPO-based AMOLED Displays Won Kyung Min1, Hyung Tae Kim1, Hyunji Son1, Seok Gyu Hong1, Se Hwan Na1, Li Jin Kim1, Jung Chul Kim1, *Hyun Jae Kim1 1. Yonsei University (Korea) |
| In AMOLED displays, image quality degradation due to imprecise gray scale control in ultra-low luminance and difficult compensation of switching and driving transistors in variable-refresh-rate becomes a severe issue. In this work, we investigated the primary causes of the image deterioration and proposed various methodological solutions and driving schemes. | |
| AMD7-2
13:50 |
Invited Layer Reduction of Hybrid TFT towards 6.6 inch AMOLED Mass Production *Shunsuke Kobayashi1, Yujiro Takeda1, Masatomo Honjyo1, Mehadi Aman1, Kenichi Kitoh1, Kazuatsu Ito1, Kohei Tanaka1, Hiroshi Matsukizono1 1. Sharp Display Technology Corporation (Japan) |
| We have successfully implemented a novel process to reduce a metal and a dielectric layer of hybrid TFT. A process to reduce the Mo residue from the back channel of IGZO surface was also optimized. 6.6 inch AMOLED panels for smartphone with this new hybrid TFT process have been adopted for mass production. | |
| AMD7-3
14:10 |
A Dual-Output Scan Driver Circuit Employing LTPO TFTs for Mobile Displays Ye-Rim Jeong1, Eun Kyo Jung1, Eunho Kim1, Hwarim Im1, *Yong-Sang Kim1 1. Sungkyunkwan University (Korea) |
| We propose a novel dual-output scan driver circuit employing low-temperature polycrystalline silicon and oxide (LTPO) thin-film transistors (TFTs). It was confirmed that the output is stably generated at a threshold voltage of -5 V to +8 V. The proposed circuit has a very simple structure of 7T1C and generates two outputs in one circuit, so it is suitable for narrow-bezel mobile displays. |
AMDp1: Active Matrix Device (1)
Dec. 15 10:40-12:00 Room 501
| AMDp1-1 | Electric Field Thermopower Modulation Analyses of Effective Channel Thickness of Amorphous InGaO3(ZnO)m Thin Film Transistors *Prashant Ghediya1, Hui Yang1,2, Takashi Fujimoto1, Yuqiao Zhang3,4, Yasutaka Matsuo1, Yusaku Magari1, Hiromichi Ohta1 1. Hokkaido University (Japan), 2. Beijing Jiaotong University (China), 3. Jiangsu University (China), 4. Foshan Institute for New Materials (China) |
| Here, we analyzed the transistor characteristics of amorphous InGaO3(ZnO)m thin film transistors (TFTs) by the electric field thermopower modulation and found that the effective channel thickness of the TFTs varies from ~2 nm to ~28 nm depending on the m-value. | |
| AMDp1-2 | Improved Reliability of a-IGZO Thin Film Transistor through Organic/Inorganic Passivation Layer Tae Eun Ha1, Jeong Hyun Ahn1, Eun Kyung Jo1, *Eun Kyo Jung1, Hwarim Im1, Yong-Sang Kim1 1. Sungkyunkwan University (Korea) |
| The electrical characteristics and reliability of an amorphous indium gallium zinc oxide thin film transistor (a-IGZO TFT) was improved by two materials, organic and inorganic, as a passivation layer in a stacked structure. it can reduce defect state and acts as an excellent barrier against adsorption/desorption of atmospheric molecules. | |
| AMDp1-3 | Electrical Characteristics of Solution-processed Hafnium-aluminum Oxide Gate Insulator with Addition of Hydrochloric Acid for a-IGZO Thin-Film Transistors Jeong Hyun Ahn1, Tae Eun Ha1, Eun Kyung Jo1, *Hwarim Im1, Yong-Sang Kim1 1. Sungkyunkwan University (Korea) |
| This paper introduces a study on solution-processed HfAlOx dielectric films prepared by different ratios of Hf and Al applied to amorphous indium-gallium-zinc oxide(a-IGZO) thin-film transistors (TFTs). We also investigated the influence of hydrochloric acid (HCl) incorporation on the electrical characteristics of HfAlOx dielectric films. | |
| AMDp1-4 | Improvement of Electrical Performance of Te/TeO Thin Film Transistors Using Sputtering at Room Temperature *Seung Min Lee1, Seong Cheol Jang1, Hyun-Suk Kim1 1. Chungnam National University (Korea) |
| Te transistors have high electric performance | |
| AMDp1-5 | Ar Plasma Treatment for Highly Stable n+ Region of Self-Aligned Coplanar IGZO TFT *Jinkyu Lee1, Yuseong Jang1, Soo-Yeon Lee1 1. Seoul National University (Korea) |
| Self-aligned coplanar (SAC) IGZO TFT structure, which has the advantage of a low resistant capacitance (RC) delay, requires highly conductive n+ regions which can be realized by plasma treatment. We optimized Ar plasma treatment process conditions to maintain stable n+ regions and demonstrated SAC IGZO TFT. | |
| AMDp1-6 | Enhancement of Field Effect Mobility of RF-sputtered In2O3 Thin Film Transistor by Titanium Floating Metal *Minsik Kong1, Soobin An1, Chanjin Park1, Soo-Yeon Lee1 1. Seoul National University (Korea) |
| We demonstrate In2O3 thin film transistors fabricated by RF-magnetron sputtering. The additionally deposited floating metal enhanced the field-effect mobility. TCAD simulation showed current bypassing through the metal layer. Furthermore, potential change might occur at the interface. | |
| AMDp1-7 | High-reliable Integrated Gate Driver GOA TFT development under Extremely High Intensity Illumination for Large-Size UHD LCDs Outdoor Display Applications *An-Thung Cho1, Feng-yun Yang1, Hao Dong1, James Hsu1, Wade Chen1 1. ChuZhou HKC Optoelectronics Technology Co., Ltd., China (China) |
| We report the unusual black mura reliability behavior in the a-Si TFT when biased under extremely high intensity illumination (> 400000 Cd/cm2). However, the black mura reliability issue is effectively improved by embedding the higher energy band gap (~4.83 eV) design of lower deposited rate N-rich SiNx in the gate insulator. This reliability behavior originated from the injection of electrons in gate electrode, transported and... | |
| AMDp1-8L | Hysteresis-Free Like, High Mobility p-Channel Tin Monoxide Thin-Film Transistor *Taikyu Kim1, Se Eun Kim1, Jae Kyeong Jeong1 1. Hanyang University (Korea) |
| We demonstrate high mobility p-channel tin monoxide (SnO) thin-film transistors with hysteresis free-like behavior. Intermediate alumina encapsulation in the middle of two postdeposition annealing processes significantly facilitates crystal growth, enabling considerable intertwining between crystals. Here, we report a simple method crystallizing the SnO thin-film. | |
| AMDp1-9L | Thermally Stable Ternary Amorphous Oxide Semiconductors for HfO2-based Ferroelectric Field-Effect Transistor Memories *Takanori Takahashi1, Mutsunori Uenuma1, Masaharu Kobayashi2, Yukiharu Uraoka1 1. Nara Institute of Science and Technology (Japan), 2. The University of Tokyo (Japan) |
| We have proposed ternary AOS in views of compatibility with ALD process and thermal stabilities for HfO2-based ferroelectric memories. Our AOS-FET achieved mobility over 20 cm2/Vs under maximum annealing temperature of 600°C. This paper discusses FET performance with AOS deposited by sputtering or ALD, and potential for ferroelectric device applications. |
AMDp2: Active Matrix Device (2)
Dec. 15 13:20-14:40 Room 501
| AMDp2-1 | New LTPS Driving Circuit with Simultaneous Emission for Mini-LED Backlit Liquid-Crystal Displays *Jui-Hung Chang1, Chia-Lun Lee1, Chieh-An Lin1, Ming-Yang Den2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AU Optronics Corp. (Taiwan) |
| A mini-LED circuit with simultaneous emission (SE) and pulse-width modulation (PWM) driving method is proposed for liquid-crystal display backlights. Analytical results show that the relative current error rates are below 4.2%, and the power consumption is reduced by 21.83% when mini-LEDs are operated at a high luminous efficacy. | |
| AMDp2-2 | Oxide-Based Pixel Circuit for PWM Driving Micro-LED Displays Employing Double-Gate Structure TFT *Changwon Jeong1, Jimin Kang1, Kyeong-Soo Kang1, Ji-Hwan Park1, Soobin An1, Chanjin Park1, Soo-Yeon Lee1 1. Seoul National University (Korea) |
| This work proposes an oxide-based pixel circuit for micro light-emitting diode (micro-LED) display with pulse width modulation (PWM) driving, which prevents the wavelength shift of the micro-LED. The proposed pixel circuit utilizes a double-gate structure for threshold voltage compensation and data input. | |
| AMDp2-3 | Compact Mini-LED Driving Circuit with Low Power Consumption Structure for Use in LCD Backlight Units Chia-Chen Chen1, *Meng-Hsuan Wu1, Chih-I Liu1, Ming-Yang Deng2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AU Optronics Corporation (Taiwan) |
| This paper presents a mini-LED driving circuit with low power consumption. To reduce the voltage across current path, the threshold voltage variation of driving TFT is compensated by matching method. Simulations show the proposed circuit has 15.79% lower power consumption than compared circuit with two TFTs on driving current paths. | |
| AMDp2-4 | A Micro Light-Emitting Diode Pixel Circuit Based on Metal Oxide Thin-Film Transistor with Progressive Emission Using Pulse Width Modulation *Eun Kyo Jung1, Hwarim Im1, Yong-Sang Kim1 1. Sungkyunkwan University (Korea) |
| The pixel circuit was proposed for the μLED displays. The PWM and progressive emission were applied to use tens of μA current and hundreds of us emission time in considering EQE characteristics. The proposed circuit was proved to operate stably in depletion mode of a-IGZO TFT. | |
| AMDp2-5 | A Novel TFT Architecture for Application to Mini-LED and Micro-LED Display *Chuanbao Luo2, Jiangbo Yao1,2, Wei Ding3, Xiujuan Xian3, Kai Zhou3, Junbiao Peng1, Xin Zhang2 1. Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (China), 2. TCL China Star Optoelectronics Display Technology Co. Ltd (China), 3. Shenzhen China Star Optoelectronics Semiconductor Display Technology Co. Ltd (China) |
| In this paper, 5-mask-count array process using light shield layer acted as source and drain layer, which is the first layer on the glass substrate, is studied. The device mobility and the threshold voltage is 13.3 cm2/Vs and 0.20V, respectively, which is reached to the considerable level of conventional top-gate self-aligned device. |
OLEDp2/AMDp3: AMOLED Displays
Dec. 15 17:00-18:20 Room 501
| OLEDp2/AMDp3-1 | Diode-Connected Pixel Circuit with Leakage Current Compensating Mechanism for P-Type LTPS AMOLED Displays *Yi-Chien Chen1, Po-Cheng Lai2, Po-Chun Lai2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AU Optronics (Taiwan) |
| This work proposes a pixel circuit with a compensating mechanism of leakage current to mitigate voltage fluctuation at the gate node of the driving TFT. The threshold voltage variation of LTPS TFTs is compensated to generate uniform currents. Therefore, the proposed pixel circuit is suitable for use in low-frame-rate displays. | |
| OLEDp2/AMDp3-2 | A Novel AMOLED Pixel Circuit to Alleviate Effects of Leakage Current using Additional Compensation Leakage Current Path Yi-Jui Chen1, *Fang-Yi Lin1, Jui-Hung Chang1, Po-Chun Lai2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AU Optronics Corp. (Taiwan) |
| This work proposes a new AMOLED pixel circuit compensating for the threshold voltage (VTH) of driving TFTs and VDD I-R drop. Moreover, the effect of large leakage currents for LTPS TFTs is alleviated. Simulation results show that the relative current error rates are below 4.72% as VTH varies by ±0.5V. | |
| OLEDp2/AMDp3-3 | Pixel Circuit with Series-Connected Leakage Current Prevention Structure for AMOLED Displays *Yuan-Hao Ho1, Bo-Shu Chen2, Chih-I Liu1, Po-Chun Lai3, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. Novatek Microelectronics Corporation (Taiwan), 3. AU Optronics Corporation (Taiwan) |
| An AMOLED pixel circuit used for low frame rate application is proposed in this article. The relative error is suppressed within 3.08% under threshold voltage variation of driving TFT. The variation of driving current decreases to 8.16 nA when emission time is prolonged to 66.67 ms. | |
| OLEDp2/AMDp3-4 | A New External Compensation Method for AMOLED Display *KookChul Moon1, Yeoungjin Chang1, Junseok Lee2, Min Park2, Junki Hong2 1. Gachon University (Korea), 2. Samsung Display (Korea) |
| The external compensation circuit and method have been used for Oxide TFT in the AMOLED display. However, the real time compensation is very difficult, and the number of fan-out lines should be increased for the conventional external compensation. A new compensation circuit and driving scheme are proposed to reduce fan-out lines and to realize a real time compensation. The application of Oxide TFT would... | |
| OLEDp2/AMDp3-5 | An Analysis of Gaming Display Based on Relationship between Response Time and Refresh Rate for Moving Picture Quality *JINSANG Lee1, Taekyung Lee1, Yeongmoon Kim1, Janghyun Cho1, Eunwoo Roh1, Seungwon Jung1, Duhwan Oh1, Hanseop Kim1 1. LG Display (Korea) |
| In this paper, we studied the correlations among the three key factors: refresh rate, GtG, and response time of major gaming display models and based on this result, we analyzed how OLED can attribute to the high performance monitor panel considering the correlation between MPRT and response time. |
Workshop on FPD Manufacturing, Materials and Components
| Dec. 14 | 13:00-14:20 | Room 413 | FMC1 | Mini/Micro LEDs Technologies |
| Dec. 14 | 14:50-16:10 | Room 413 | FMC2 | New Materials and Components |
| Dec. 14 | 16:40-18:00 | Room 411 | VHF3/FMC3 | Ergonomics and Display Measurement |
| Dec. 15 | 10:20-11:20 | Room 411 | FMC4 | Display Manufacturing I |
| Dec. 15 | 14:50-15:50 | Room 405 | FMC5 | Display Manufacturing II |
| Dec. 15 | 16:40-18:00 | Room 409 | FMC6/PRJ6 | AR/VR System and Component |
| Dec. 16 | 9:20-10:40 | Room 501 | FMCp1 | Display Manufacturing |
| Dec. 16 | 9:20-10:40 | Room 501 | FMCp2 | New Materials and Components |
| Dec. 16 | 11:10-12:30 | Room 501 | FMCp3 | TFT Technology |
| Dec. 16 | 11:10-12:30 | Room 501 | FMCp4 | AR/VR System and Component |
FMC1: Mini/Micro LEDs Technologies
Special Topic of Interest on Micro/Mini LEDs
Dec. 14 13:00-14:20 Room 413
Chair: Daisuke Ogomi (Nitto Denko)
Co-Chair: Takao Tomono (Toppan)
| FMC1-1
13:00 |
Invited Development and Photoluminescence Properties of Red Luminescent Dinuclear Eu(III)-β-diketonates with a Branched Tetraphosphine Tetraoxide Ligand for Potential Uses in LEDs *Hiroki Iwanaga1, Fumihiko Aiga1, Shin-ichi Sasaoka2, Takahiro Wazaki2 1. Toshiba Corporation (Japan), 2. NITTO KASEI CO., LTD (Japan) |
| Novel dinuclear Eu(III)-β-diketonates with a branched tetraphosphine tetraoxide ligand, TDPBPO and TDPPPO, were developed. They have sharp red emissions and excellent quantum yields, and are promising candidates for LED devices, security media, and sensing for their pure and bright photoluminescence. | |
| FMC1-2
13:20 |
Adaptive Micro-display Pixel with Quantum Dot for Compact Arrangement *Chung-Jen Ou2, Ming-Wei Tsai2, Chien-Chih Chen2, Yu-Min Chen1, Wen-Fu Lin2, Wen-Chun Wang2 1. National Yang-Ming Chiao-Tung University (Taiwan), 2. Coretronic Corporation (Taiwan) |
| Color conversion material such as quantum dot can be used extensively for high density and small pixel display. However, process of color conversion materials could impose limitations on the pixel characteristics. This article shows the use of guidance layers to alter pixel density, for the possibility on generating compact subpixels. | |
| FMC1-3
13:40 |
Enhanced Quantum Dot Conversion Layer Structure Using Light Recycling in Blue Micro LED Display *Juwon Jung1 1. Yonsei University (Korea) |
| This study reports efficient and cost-effective color conversion structure with Al-coating layer and Long Pass Filter(LPF). Compared with conventional structure and micro-LED/QD-film with Al-coating LPF, it was confirmed that maximum optical powers of red and green lights in proposed structure were increased by 71.73% in 0.4wt% and 66.12% in 0.8wt%. | |
| FMC1-4L
14:00 |
Electron Affinity Control of Zinc Silicon Oxide Nanoparticles for Electron Transport Layer in OLEDs and QLEDs *Satoru Watanabe1, Hikaru Kobayashi1, Haruhiko Yoshino1, Masaya Kunigita1, Takaaki Murakami1, Yusuke Mori1, Yasuhiro Sanada1, Nobuhiro Nakamura1 1. AGC Inc. (Japan) |
| Nanoparticles of transparent semiconducting zinc silicon oxide, with diameter below 4 nm, were found to exhibit a variety of electron affinity ranging from 3.6 eV to 2.7 eV, by altering Si content. Resulting nanoparticles can be dispersed in glycol solvents, showing a good surface flatness in the spin-coated films. |
FMC2: New Materials and Components
Dec. 14 14:50-16:10 Room 413
Chair: Yukito Saitoh (Fujifilm)
Co-Chair: Kazuhiro Osato (Zeon)
| FMC2-1
14:50 |
Invited Bendable Electro-Acoustic Transducer Fabricated Utilizing Frequency Dispersion of Elastic Modulus *Tetsu Miyoshi1 1. FUJIFILM Corporation (Japan) |
| To realize the flexible speaker diaphragm that can be united with a flexible display without deteriorating lightweight properties and flexibility, a novel bendable electro-acoustic transducer (B.E.A.T.) has been developed employing the viscoelastic polymer as the matrix of 0-3-type piezoelectric composites. | |
| FMC2-2
15:10 |
Invited Enabling Materials with Various Optical Performance *Akira Yamasaki1, Atsuko Yamamoto1 1. Merck Electronics Ltd. (Japan) |
| Optical performance is one of the key factors to enhance device performance. The main purpose of enabling materials with various optical performance is refractive index, transmittance, and reflectance controlling. | |
| FMC2-3
15:30 |
High Performance Black Bank for Ink-Jet Process *Seishi Shibayama1, Daishi Yokoyama1, Tadashi Kishimoto1, Teruaki Suzuki1, Astuko Yamamoto1, Julian Burschka2 1. Merck Electronics Ltd. (Japan), 2. Merck KGaA (Germany) |
| Due to the evolution of new technologies, a change in properties and performance has recently been demanded for the black material typically used as a sub-pixel divider in displays. This talk will discuss the process from patterning to ink filling for a black bank material designed for ink-jet applications and review the critical functionality required for outstanding visual quality in future displays. | |
| FMC2-4
15:50 |
Novel Method to Manufacture 1/4-Wave Plate Film Having Nz Coefficient of 0.5 by Solvent for High Performance Devices *Kyosuke Inoue1, Kazuhiro Osato1, Kensaku Fujii1, Takamichi Inomata1 1. Zeon Corporation (Japan) |
| We introduce a new type ¼-wave plate film (QWP) for high performance devices. This QWP film consists of three layers having Nz factor of 0.5 respectively. Therefore, not only the wavelength dispersion but also the viewing angle are excellent. We also have found the novel way to manufacture films with Nz factor of 0.5 by solvent. |
VHF3/FMC3: Ergonomics and Display Measurement
Dec. 14 16:40-18:00 Room 411
Chair: Johan Bergquist (Consultant)
Co-Chair: Kalil Käläntär (Global Optical Solutions)
| VHF3/FMC3-1
16:40 |
Invited Can We Maintain Space Constancy in Virtual Environments? *Richard HY SO1, Phoebe ML Ching1, Teric TT Chan1, Jerry Jia2 1. The Hong Kong University of Science & Technology (China), 2. Facebook Reality Laboratory (United States of America) |
| Users of Virtual Reality (VR) expect to see space-stabilized scenes when they explore virtual environments with combined head and eye movements. Like our experience in real world, users expect space-constancy during head and eye movements. This talk will present a study to demonstrate the break-down of space-constancy during vestibule-ocular reflexes in VR. | |
| VHF3/FMC3-2
17:00 |
Effect of Presentation Position on the Visibility of Dynamic Signs *Hiroshi Watanabe1, Nana Itoh1, Hiroyasu Ujike1, Ken Sagawa1, Reiko Sakata2, Naoki Furuhata2 1. National Institute of Advanced Industrial Science and Technology (AIST) (Japan), 2. Mitsubishi Electric Corporation (Japan) |
| Dynamic signs provide warning and guidance information by using images that change visual properties (luminance, size, location, etc.) depending on their situation. In this paper, we study the effect that the presentation position of dynamic signs has on their visibility among three age groups. | |
| VHF3/FMC3-3
17:20 |
Invited Display Reflectance: Clearing the Haze *Michael E. Becker1 1. Display-Messtechnik&Systeme (Germany) |
| Analysis of the point-spread function (PSF) yields thedirectional variations of display reflectance with highresolution in the vicinity of the specular direction and now -at reduced resolution - also at off-specular directions, thusproviding a data basis for determination of a set of completein-plane BRDFs/BTDFs. | |
| VHF3/FMC3-4L
17:40 |
Effect of Pixel Aperture Ratio on Subjective Spatial Resolution *Keita Nakamura1, Midori Tanaka1, Takahiko Horiuchi1, Kenichiro Masaoka2,3 1. Chiba University (Japan), 2. NHK Science & Technology Research Laboratories (Japan), 3. NHK Engineering System, Inc. (Japan) |
| We conducted a psychophysical experiment to evaluate the subjective spatial resolution of random dot stimuli with different pixel aperture ratios. It was confirmed that even at an angular resolution of 30 cycles per degree, which corresponds to the standard viewing condition, the pixel aperture ratio affects the subjective spatial resolution. |
FMC4: Display Manufacturing I
Dec. 15 10:20-11:20 Room 411
Chair: Atsuko Yamamoto (Merck Electronics)
Co-Chair: Daisuke Matsuura (Dai Nippon Printing)
| FMC4-1
10:20 |
Invited Display Defect Data Augmentation for Deep Learning Models Changheon Lee1, JoonKyu Kim1, *Suk-Ju Kang1 1. Sogang University (Korea) |
| This paper presents a deep learning-based data augmentation method for generating defect data. The generated data are to be used for training an anomaly detector for the purpose of detecting display defects. By comparing the generated data with those generated from previous methods we find that the deep learning-based data augmentation outperforms previous methods by producing photorealistic data covering a diverse range of real-world defects. | |
| FMC4-2
10:40 |
Breakthrough for Test Cost Reduction on Micro LED Device with Electric-luminescence and Electrical Test Embedded Solution *Hiroshi Kaga1, Kotaro Hasegawa1, Koji Miyauchi1 1. ADVANTEST CORPORATION (Japan) |
| To launch up Micro-LED display, the biggest challenge is cost reduction, With the urgent needs to reduce test costs, most critical issues is parallelizing electroluminescence (EL) test. In this paper, we propose super cost-effective test methods (PEMP) embedding EL and electrical test and report its effectiveness and application results. | |
| FMC4-3
11:00 |
Composite Mass-Transfer Method for Reducing Effect of Mura and Defects in mLED Wafer *Shin Yamada1, Hiroaki Ito1, Yohei Sato1, Toshihiko Fujiwara1, Kunio Imaizumi1, Takeshi Yokoyama1, Noriyuki Yamawaki1, Nobuyuki Hasegawa1, Tokuro Ozawa1, Shinji Yuda1 1. Kyocera Corporation (Japan) |
| Defects and mura in micro-LED wafers are serious issues that increase the cost of micro-LED displays. We developed a composite mass-transfer method to produce micro-LED displays even when some defects and mura remain in a micro-LED wafer. |
FMC5: Display Manufacturing II
Dec. 15 14:50-15:50 Room 405
Chair: Yasuyuki Inoue (Corning Japan)
Co-Chair: Shuhei Namekawa (NIPPON STEEL Chemical & Material)
| FMC5-1
14:50 |
Electrical Characteristics of LTPS-TFTs Fabricated by ELA with Laser Intensity Distributions Controlled by Dot Array Masks *Toru Okatsugi1, Keita Katayama1, Yoshiaki Kakimoto1, Daisuke Nakamura1, Tetsuya Goto2, Hiroshi Ikenoue1 1. Kyushu University (Japan), 2. Tohoku University (Japan) |
| LTPS thin films are formed by using the ELA method, and it is known that the crystal grain size can be controlled by controlling the intensity distribution of the laser. In this study, we investigated the effect of intensity distribution during laser annealing on the electrical characteristics of LTPS TFTs. | |
| FMC5-2
15:10 |
Silicon Thin Film Crystallization Annealing System Using Blue Laser Diode *Yingbao Yang1, Seiya Toriyama1, Masahiro Kinoshita1, Kaoru Saito1, Takuya Sawai1, Junichi Koshigi1, Jun Gotoh1, Shigeto Sugimoto1, Jingbao Yao, Rui Zhao, Jinming Li, Shouqing Chen 1. V Technology Co., Ltd (Japan) |
| A new silicon-crystallization-annealing system using blue laser diode (BLDA) has been developed. By a redundant fiber-array arrangement, annealing of different pixel pitch can be implemented. Low off current and high mobility about 300cm2/VS has been confirmed in the TFT device by BLDA. | |
| FMC5-3
15:30 |
Printing of Conductive and Insulating Structures with Micrometer Resolution for Next-Generation Displays Aneta Wiatrowska1, Piotr Kowalczewski1, Karolina Fiaczyk1, Lukasz Witczak1, Jolanta Gadzalinska1, Iwona Gradzka-Kurzaj1, Mateusz Lysien1, Ludovic Schneider1, Lukasz Kosior1, *Filip Granek1 1. XTPL SA (Poland) |
| We demonstrate the versality of the Ultra-Precise Deposition approach for rapid prototyping of next-generation displays. We focus on how to print conductive and non-conductive materials at micrometer scale to fabricate different building-blocks of high-resolution displays. |
FMC6/PRJ6: AR/VR System and Component
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 15 16:40-18:00 Room 409
Chair: Hirotsugu Yamamoto (Utsunomiya Univ.)
Co-Chair: Osamu Akimoto (Sony Semiconductor Solutions)
| FMC6/PRJ6-1
16:40 |
Invited The Quantum Light Chip Technology *Ioannis Pitsios1, Jonas Zeuner1, Chiara Greganti1 1. VitreaLab GmbH (Austria) |
| The Quantum Light Chip is a light source that emits a dense array of laser beams from within a thin piece of glass, offering precisely controllable illumination properties, that can fundamentally change what is possible with current display technology, accelerating the development of the Augmented Reality (AR), Virtual Reality (VR) and 3D displays. | |
| FMC6/PRJ6-2
17:00 |
Proposal of Ultra-thin AR Wearable Display Film Using Liquid Crystal Waveguide *Takao Tomono1, Rumiko Yamaguchi2 1. Toppan Inc (Japan), 2. Akita University (Japan) |
| We propose an ultra-thin AR display film (<1mm) using a liquid crystal waveguide. The principle is to outgoing light from waveguide by changing the refractive index of the clad when voltage is applied. The device does not cause fatigue in the eye because of direct projection system onto the retina. | |
| FMC6/PRJ6-3L
17:20 |
Invited Application of Polarization Volume Holographic Grating in New Display Technologies *Yuning ZHANG1 1. Southeast University (China) |
| Near-eye holographic diffractive waveguide display using novel polarized volume holographic gratings (PVG) have lately gotten a lot of interest. Here, we briefly introduced the fundamental concepts of PVG before sharing our work progress on PVG, which included procedure, imaging simulation, and experimental results. Simultaneously, these prospective PVG-based application directions were also discussed. | |
| FMC6/PRJ6-4L
17:40 |
Effect of the Diameter of Transparent Spheres Introduced in AIRR Optical System on the Modulation Transfer Function *Kazuaki Takiyama1, Kengo Fujii1, Masaki Yasugi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| The use of a large diameter transparent sphere in AIRR (aerial imaging by retro-reflection) optics, which is a conjugate arrangement of two transparent spheres, was found to improve the modulation transfer function (MTF) of the lens resolution increase by the aperture of the ball lens. |
FMCp1: Display Manufacturing
Dec. 16 9:20-10:40 Room 501
| FMCp1-1 | Study on Flexible and Transparent mini-LED Direct Display for High-end Public Information Display *Xinchen You1, Xiaobo Hu1, Qinzun Lin1, Zhixiang Fan1, Rui Zhao1, Jinming Li1, Chaode Mo1 1. TCL China Star Optoelectronic Technology Co., Ltd. (China) |
| To produce a flexible transparent mini-LED screen consists of IGZO TFT fabrication on Clear Polyimide(CPI) substrates, mini-LED chips SMT on the drive circuit, and LLO to strip CPI from glass substrates. With high transparency and low energy consumption, display panel can be an ideal solution for high-end Public Information Display(PID). | |
| FMCp1-2 | Application of Silver Paste Transfer Side Wires Technology in Micro LEDs Display *Kuangnan Cheng1, Kuangnan Cheng1, Weiji Zhang1, Rui Zhao1 1. Shenzhen China Star Optoelectronics Technology Co., Ltd. (China) |
| This paper introduces the silver side wires technology with low resistance, small spacing and high reliability applied to MicroLED display. By transfer pattern, silver paste is printed on the front, side and back of substrate to form 58um side wires. | |
| FMCp1-3 | Control of Mesa Shape by ICP-RIE Condition to Fabricate Monolithically Integrated Micro-LEDs *Yamato Yamazaki1, Takeyoshi Onuma1, Tomohiro Yamaguchi1, Tohru Honda1 1. Kogakuin University (Japan) |
| We assessed dry etching conditions to form a gentle slope for the side surface of GaN mesa structure. The technique enables us to prevent the electrode disconnection when the top-down monolithic integration method is employed to fabricate the micro-LED displays. | |
| FMCp1-4 | High Resolution Technology of FPD Exposure Tools and a New Broadband Illumination Technique to Achieve 1.0 μm L&S Resolution *Toru Okubo1, Manabu Hakko1, Nobuhiko Yabu1, Kazuki Toyoda1, Miwako Ando1, Takeo Oyanagi1, Yusuke Miyoshi1, Ryousuke Fukuoka1, Nozomu Izumi1, Fumiyasu Ono1, Takaaki Terashi1, Yoshinori Osaki1 1. Canon Inc. (Japan) |
| To meet the demand for high resolution in flat panel display (FPD) market, we have developed Gen. 6 exposure tools “MPAsp-E903T” for 1.2 μm L&S. With the use of resolution enhancement techniques (RETs), the resolution performance extends to 1.0 μm L&S patterns. | |
| FMCp1-5 | COG 2.45mm-down-border Based on 10mask *YUAN YUAN ZHONG1, XUEXIN LAN1, CHUNRONG LIN1, JIE LIN1, SHANGFU CAI1, YUTIAN LIU1, BAILING TANG1, WANYU SU1, CHANGJUAN ZHANG1, GUOZHAO CHEN1, XIANYAN YANG1 1. Xiamen Tianma Microelectronics Co. (China) |
| The research of narrow border products is the direction of the display industry. With the introduction of reduced mask products, it poses a major challenge to the compression of the down border. Based on the panel design and structure of 10mask narrow border products, the technology of PSM mask is used to compress the M1/M2 Fan-out pitch to 3.5 μm and the distance between IC... | |
| FMCp1-6L | Realize the High Resolution of BM by Adjusting the Process, Equipment and Material Composition *Hong Shan Yin1, Du Chen1, Fang Tan1 1. Star Optoelectronics Semiconductor Display Technology Co.,Ltd (China) |
| In the development process of LCD panels, the problem of low backlight utilization has not been effectively solved. At present, the backlight utilization rate of most products is only about 5%, and 95% is lost. Therefore, how to improve the utilization rate of the LCD backlight is one of the key issues in reducing the power consumption and cost of the LCD panel. | |
| FMCp1-7L | Image Based Objects' Transparency Measurement by a Polarization Camera *Pei-Yu Lai1, Tzung-Han Lin1 1. National Taiwan University of Science and Technology (Taiwan) |
| In this paper, we propose an image-based method to quantify the transparency of objects based on a polarization camera. By controlling the status of the backlight, we can obtain the light intensity of penetration in four different phases, and can observe the difference to quantify the haze and transmittance. It is worth mentioning that our method can measure objects' transparency as small as a pixel, and... |
FMCp2: New Materials and Components
Dec. 16 9:20-10:40 Room 501
| FMCp2-1 | Improvement of Color Mura by Using a Triple-Zero-Birefringence Polymer Film *Shizuki Sasaki1, Yasuhiro Koike1,2 1. Keio University (Japan), 2. Keio Photonics Research Institute (Japan) |
| This study proposes triple-zero-birefringence polymer (TZBP) to prevent color mura due to birefringence of polymer films used in displays. Chromaticity measurements of the display clarified the advantage of the TZBP film to prevent the color mura and reproduce an actual color of the displays. | |
| FMCp2-2 | Semiconductor Nanorods for Micro LED Down Conversion with Alleviated Temperature Effect *Jianxin SONG1, Chengbin KANG1, Maksym Prodanov1, Abhishek Kumar SRIVASTAVA1 1. Hong Kong University of Science and Technology (Hong Kong) |
| The development prospect of high-resolution displays is very broad, especially micro-LED has attracted much attention. However, due to size effects and high temperature, the development has been bottlenecked to achieve full color display. Compared with traditional quantum dots, thermal stable quantum rods with anisotropic shape can effectively solve the problems of light efficiency and long-term stability. In this paper, we attempt to address the thermal stability... | |
| FMCp2-3L | Evaluation of Dielectric Loss in Randomly-Aligned Liquid Crystal Molecules for Millimeter-Wave Reflect Array Antenna *Yosei Shibata1, Yasuo Yamamoto1, Takahiro Ishinabe1, Hiroyasu Sato1, Qiang Chen1, Hideo Fujikake1 1. Tohoku University (Japan) |
| In this paper, we investigated dielectric characteristics within millimeter-wave band of structurally-modified liquid crystal molecules based on free space method for next-generation wireless communication system. As the results, we clarified that liquid crystal molecule having rigid groups and strong interaction among molecules has reduction of dielectric loss value. | |
| FMCp2-4L | Formation of Nano-Sized Crystals of Organic Phosphor on Substrate with Fine-Hole Structure *Yuma Ono1, Yosei Shibata1, Takahiro Ishinabe1, Hideo Fujikake1 1. Tohoku University (Japan) |
| To obtain nano-sized crystals of organic phosphor for high efficiency and narrow band emission, we proposed fine-hole structure and wettability pattern control. As a result, we found that we can control the crystal growth field by wettability control. We also succeeded in making nano-size organic phosphor crystals. |
FMCp3: TFT Technology
Dec. 16 11:10-12:30 Room 501
| FMCp3-1 | Zinc Tin Oxide Synaptic Transistor with Ion-gel in Different Concentrations for Neuromorphic Application Yu-Wu Wang1, Wen-Yu Liao1, *Chen En Zhang1, Yu-Hong Xie1, Pei-Yun Huang1, Yu-Han Cheng1 1. National Chan-Hua University of Education (Taiwan) |
| The component of three-terminal bionic neural based on zinc-tin-oxide semiconductor (ZTO) with Ion-gel in three different concentrations as the insulating layer was fabricated in this paper. We proved the short-term plasticity (STP) characteristic was increased with the addition of [EMIM][TFSI], where the best paired-pulse facilitation (PPF) ratio was 162 %. | |
| FMCp3-2 | The Novel Technology Development of 7Mask for LTPS-LCD *Dandan Yan1, Xuexin Lan1, Bingping Liu1, Yanshan Huang1, Xiaoxiao Wu1, Xiangkang Wei1, Honghong Nie1, Keshi Yang1, Chao Deng1, Guozhao Chen1, Xianyan Yang1 1. Xiamen Tianma Microelectronics Co. (China) |
| Liquid Crystal Display with 7mask was developed and fabricated successfully for production. We found and solved three key questions, which include the M2 taper, the short circuit of M2 and the thorn-like residue in PV1 and PV2 hole. | |
| FMCp3-3 | A Study of Spin Coated a-IGZO TFT with Y-doped ZrO2 Gate Insulators EunKyung Jo1, Jeong Hyun Ahn1, Tae Eun Ha1, *Eunho Kim1, Hwarim Im1, Yong-Sang Kim1 1. Sungkyunkwan University (Korea) |
| In this study, an indium gallium zinc oxide (IGZO) thin-film transistor (TFT) based on Yttrium-doped ZrO2 dielectric was studied. We revealed that a-IGZO/1:8 Y-doped ZrO2 TFT deteriorated compared to a-IGZO/ZrO2 TFT. On the other hand, a-IGZO/1:2 Y-doped ZrO2 TFT had better overall properties than a-IGZO/ ZrO2 TFT. | |
| FMCp3-4 | Cu Process Development of 43UD DRD TFT Architecture by Halftone Photolithography 4-Mask Technology *An-Thung Cho1, Wei-wei Hu1, Ren-hong Zhan1, Wen-bing Wu1, Ning-ning Li1, Wan-fei Yong1, James Hsu1, Wade Chen1 1. ChuZhou HKC Optoelectronics Technology Co., Ltd., China (China) |
| Screen abnormality is a subject that needs to be overcome in the development of the TFT-LCD Cu process. Passivation undercut is one of the more difficult line defect problems to overcome because the ITO contacts M1 or M2 are discontinuous in the via hole causing screen anomalies. We describe in detail our approach to improve undercut of passivation via hole. The problem without any other side... | |
| FMCp3-5L | Quantitative Evaluation of Low-temperature Si Oxide Films by Derivative FT-IR Spectra *Susumu Horita1, Di Pu1 1. Japan Advanced Institute of Science and Technology (Japan) |
| Using derivative FT-IR spectra of Si oxide films deposited at 160 to 250 oC, a peak due to Si-OH bond around 940 cm-1 was evaluated quantitatively. From this, amount of the residual OH is qualified more effectively, compared with normal spectra. However, further correction is needed for closer analysis. |
FMCp4: AR/VR System and Component
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 16 11:10-12:30 Room 501
| FMCp4-1 | Improved Stability of Electroactive Elastomer Tunable Lenses *Jonghyeon Ka1, Imbo Gong1, Wooksung Kim1 1. Pohang University of Science and Technology (POSTECH) (Korea) |
| An electrically-tunable lens with dielectric elastomer actuators (DEAs) is designed to change the lens’ focal-length f. The tunable lens can solve the Vergence Accommodation Conflict of the Head-Mounted Display (HMD). The tunable lens varies f by changing the radius of curvature when voltage is applied. | |
| FMCp4-2 | The Projection Lens Design for Holographic Waveguide Display with One-dimensional Exit Pupil Expansion *Chih Wei Chen1, Shao Kui Zhou1,2, Wen Kai Lin1,2, Wei Chia Su1 1. National Changhua University of Education (Taiwan), 2. National Yang Ming Chiao Tung University (Taiwan) |
| In this study, Zemax is used to design a projection lens with larger aperture in a reasonable size and combined with a 1D EPE structure of waveguides to construct a NED system, which DFOV achieved 30° and solved the problems of poor coupling efficiency and complicated process of 2D EPE. | |
| FMCp4-3 | See-through AR Display Based on Waveguide Combiner with Surface Relief Grating *Wen-Teng Liang1, Wen Kai Lin2,1, Shao Kui Zhou2,1, Wei Chia Su1 1. National Changhua University of Education (Taiwan), 2. National Yang Ming Chiao Tung University (Taiwan) |
| In this research, the diffractive waveguide elements can treat as reflection or transmission elements depending on different observation directions. The device can achieve one dimension exit pupil expansion, and approximate a horizonal FOV of 34 deg in reflection element and transmission element respectively. | |
| FMCp4-4 | Proposal of Spatial Blending That Realizes Eye-Matching by Use of Aerial Display *Keigo Sato1, Masaki Yasugi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| We realized true-eye-matching between on-site observers and the on-line face image by the blended face image formed by the new optical system using two different facing floating face images in aerial imaging by retro-reflection. Our proposed method can successfully form the blended face image of desired blend-ratio without image inversion. | |
| FMCp4-5 | 3D Aerial Display Combining Optical See-Through Aerial Imaging by Retro-Reflection with Depth-Fused 3D Display *Takahiro Omoto1, Kengo Fujii1, Masaki Yasugi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| Aerial 3D display can be achieved using a Depth-fused 3D display combining an optical see-through aerial imaging by retro-reflection. Furthermore, our proposed aerial 3D display allows the observer to perceive the 3D image even at wide range of observation distances from about 2 meters to over 5 meters. | |
| FMCp4-6L | Multiple Aerial Images in Two-Directions with Varying Angle of a Pair of Infinity Mirror in Aerial Imaging by Retro-Reflection *Kohei Kishinami1, Kengo Fujii1, Masaki Yasugi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| We performed optical simulation in which the angle between the light source and the adjacent angles of the two half mirrors is changed from 90 degrees to 30 degrees. We found that aerial images decrease gradually, and no recognizable aerial images of shapes could be seen at 34 degrees. |
Workshop on Inorganic Emissive Display and Phosphors
| Dec. 16 | 9:00-10:20 | Room 413 | PH1/OLED3 | Cadmium Free QDs |
| Dec. 16 | 10:50-11:30 | Room 504 | PH2 | Phosphors 1 |
| Dec. 16 | 13:30-14:30 | Room 504 | PH3 | Phosphors 2 |
| Dec. 15 | 13:20-14:40 | Room 501 | DXRp2/PHp1 | Development of Radiation Imaging Materials |
| Dec. 15 | 17:00-18:20 | Room 501 | PHp2 | Phospors |
PH1/OLED3: Cadmium Free QDs
Special Topic of Interest on Quantum Dot Technologies
Dec. 16 9:00-10:20 Room 413
Chair: Kazuhiko Hara (Shizuoka Univ.)
Co-Chair: Toshiaki Ikuta (SK materia JNC)
| PH1/OLED3-1
9:00 |
Green Light-emitting Diodes Using Ag-In-Ga-S/GaSx Quantum Dots with Narrow Spectral Bandwidth *Genichi Motomura1, Yukiko Iwasaki1, Taro Uematsu2, Susumu Kuwabata2, Tatsuya Kameyama3, Tsukasa Torimoto3, Toshimitsu Tsuzuki1 1. NHK (Japan), 2. Osaka University (Japan), 3. Nagoya University (Japan) |
| Light-emitting diodes fabricated using Ag-In-Ga-S/GaSx quantum dots that exhibit vivid green emission were investigated, along with their electroluminescence (EL) properties. Defect-related emission components in the EL spectrum were suppressed by treatment with Ga compounds, and the EL exhibited color purity comparable to the photoluminescence. | |
| PH1/OLED3-2
9:20 |
Enhanced Charge Balance with Antibiotics in Both Electron and Hole Transport Layers of InP/ZnSexS1-x/ZnS-Based Quantum Dot Light-Emitting Diodes *Awais Ali1, Wei Jiang1, Yonghyeok Choi1, Eunhwa Jeon1, Heeyeop Chae1 1. Sungkyunkwan University (Korea) |
| Antibiotic ampicillin was introduced in InP-based quantum dot light-emitting diodes (QLEDs) to achieve charge balance via band alignment, enhancing external quantum efficiency from 0.9% to 4.7%. This is the first report of a QLED in which the same antibiotic material was applied to both the ETLs and HILs. | |
| PH1/OLED3-3
9:40 |
Cadmium Reduced QDs for Superior Brightness and Stability within RoHS Limits *Jan Niehaus1, Horst Weller2,1, Sören Becker1 1. Fraunhofer CAN (Germany), 2. University of Hamburg (Germany) |
| Hereby we present a QD system with quantum yields close to 1, FWHM below 20 nm and high photo stability with cadmium content below 3 %. These particles can produce a color converter with huge absorption in the blue but still in line with the RoHS limits. | |
| PH1/OLED3-4L
10:00 |
Development of Cd-free QD-LEDs for Display Applications and Improvement of Luminous Efficiency *Noboru Iwata1, Takahiro Doe1, Keisuke Kitano1, Yoshihiro Ueta1, Takahiro Adachi1, Makoto Izumi1, Tetsu Tatsuma2, Yasuhiko Arakawa2 1. Sharp Corporation (Japan), 2. The University of Tokyo (Japan) |
| We discuss development of QD-LEDs using Cd-free quantum dots. We have achieved patterning in a size practical for high-resolution displays, estimating the expected EQE derived from the optical evaluation of QDs and the equivalent circuit model of QD-LEDs, and directly measuring the carrier injection efficiency based on photoelectrochemical measurement. |
PH2: Phosphors 1
Dec. 16 10:50-11:30 Room 504
Chair: Kotoku Ohmi (Tottori Univ.)
Co-Chair: Tsuneo Kusunoki (Oxide)
| PH2-1
10:50 |
Invited Thermoluminescent Glasses for Neutron Detection *Masanori Koshimizu1, Hiroto Yamaguhi2, Genichiro Wakabayashi3, Yutaka Fujimoto2, Keisuke Asai2 1. Shizuoka University (Japan), 2. Tohoku University (Japan), 3. Kindai University (Japan) |
| We have succeeded in neutron detection via thermoluminescent response of 6Li- and 10B- enriched glasses via subtraction of gamma-ray contribution using 11B-enriched glasses containing Li of natural isotope abundance ratio. |
PH3: Phosphors 2
Dec. 16 13:30-14:30 Room 504
Chair: Toshihiro Miyata (Kanazawa Inst. of Tech. )
Co-Chair: Tsuneo Kusunoki (Oxide)
| PH3-1
13:30 |
Invited Development of Phosphor film for Ultra-thin, High-brightness LCDs *Takehiro Yamasuge1, Yasushi Ito1, Tomomitsu Hori1 1. Dexerials Corporation (Japan) |
| In recent years, mini-LEDs and local dimming have been used in direct-type backlight units (BLUs) in LCDs to realize thinner LCD designs and higher contrast, so as to compete with OLEDs. A phosphor film with a green-emitting SrGa2S4:Eu phosphor, red-emitting K2SiF6:Mn phosphor and dichroic filter was developed and commercialized and is described in this paper. An LCD with a phosphor film and blue mini-LEDs... | |
| PH3-2
13:50 |
Eutectic Phosphor for High-Power Excitation *Seika Tokumitsu1, Tsuneo Kusunoki1, Satoshi Makio1, Hideo Kawabe1 1. Oxide Corporation (Japan) |
| High-power blue-emitting laser diodes have been applied to projectors and lighting systems as excitation sources for yellow-emitting phosphors. These phosphors must be robust and should not exhibit thermal quenching. This work developed durable eutectic phosphors with a thermal conductivity of above 20 W/m·K. | |
| PH3-3
14:10 |
Indium Phosphide Quantum Dot with Polymer Linker for Space Control between QDs and Dispersion in Siloxane Matrix *Boram Kim1, Yonghyeok Choi1, Kangwoo Lee1, Heeyeop Chae1,2 1. Sungkyunkwan University (Korea), 2. Sungkyunkwan Advanced Institute of Nanotechnology (Korea) |
| High concentration InP quantum dots (QDs) in siloxane composite were prepared by exchanging ligands of InP QDs using siloxane-based epoxy groups having functionalized with a poly (dimethylsiloxane) diglycidyl ether terminated (PDMS-DGE). The siloxane capped QDs show improved stability in the siloxane matrix due to the compatibility between QDs and matrix. |
DXRp2/PHp1: Development of Radiation Imaging Materials
Dec. 15 13:20-14:40 Room 501
| DXRp2/PHp1-1 | Development of Organic Scintillators Using Molecules Exhibiting Aggregation-Induced Emission *Masanori Koshimizu1, Atsushi Sato2, Akito Watanabe2, Yutaka Fujimoto2, Keisuke Asai2 1. Shizuoka University (Japan), 2. Tohoku University (Japan) |
| We have succeeded in the development of plastic scintillators containing phosphors with aggregation-induced emission characteristics. |
PHp2: Phospors
Dec. 15 17:00-18:20 Room 501
| PHp2-1L | Evaluation of Inner Phase of ZnAl2O4 Thin Film for Ultra Violet Emission *Kosuke Inoue1, Shun Adachi1, Hiroko Kominami1, Kazuhiko Hara1, Shunsuke Kurosawa2 1. Shizuoka University (Japan), 2. Tohoku University (Japan) |
| Inner phase of ZnAl2O4 deep UV phosphor thin films were investigated by etching. It was found that multiple ZnAl2O4 phases were formed. From the film thickness where UV emission decreased sharply, the emission peak shifted to the shorter side, it was clarified that the range of Zn distribution. | |
| PHp2-2L | Phase Control in The Pressurization Process of MgTiOF : Mn for Deep Red Emission *Naoki Uesugi1, Masayuki Endo1, Hiroko Kominami1, Kazuhiko Hara1 1. Shizuoka University (Japan) |
| MgTiOF:Mn for deep red emission using a pressure vessel is investigated. The formation of a luminescent phase was not confirmed. Since the Mn4+ emission was confirmed from PL, a slight MgTiOF-based phase was formed, and it is considered possible to control by adjusting the amount of HF to be added. | |
| PHp2-3L | Improvement of Photoluminescent Characteristics by Post Annealing in O3 Atmosphere for Y4Si2O7N2:Eu3+ Phosphors *Rentaro Furuie1, Takumi Nishitani1, Hiroki Shinoda1, Takashi Kunimoto2, Koutoku Ohmi1 1. Tottori University (Japan), 2. Tokushima Bunri University (Japan) |
| A low-temperature post-annealing in O3 atmosphere has been attempted to enhance the Eu3+ activation for Y4Si2O7N2:Eu3+ red phosphor, which were prepared by the solid-state reaction in NH3. By the annealing, the photoluminescence excitation band due to the Eu3+ charge transfer state increases by about 40%, compared to the unannealed samples. |
Workshop on OLED Displays and Related Technologies
| Dec. 15 | 10:20-11:40 | Room 413 | OLED1 | OLED Materials |
| Dec. 15 | 13:00-14:00 | Room 413 | OLED2 | OLED Displays |
| Dec. 16 | 9:00-10:20 | Room 413 | PH1/OLED3 | Cadmium Free QDs |
| Dec. 16 | 10:50-11:50 | Room 413 | OLED4 | Advanced Technologies |
| Dec. 16 | 13:30-14:10 | Room 413 | OLED5 | Flexible OLEDs |
| Dec. 15 | 15:10-16:30 | Room 501 | OLEDp1 | OLED Technologies |
| Dec. 15 | 17:00-18:20 | Room 501 | OLEDp2/AMDp3 | AMOLED Displays |
OLED1: OLED Materials
Dec. 15 10:20-11:40 Room 413
Chair: Yoshimasa Sakai (Mitsubishi Chem.)
Co-Chair: Ken-ichi Nakayama (Osaka Univ.)
| OLED1-1
10:20 |
Invited Super-Low-Refractive-Index Hole Transport Layers with Perfluororesin for High-Outcoupling-Efficiency OLEDs *Daisuke Yokoyama1, Tatsuki Sasaki1, Yasutaka Suzuki1, Takefumi Abe2, Kaori Tsuruoka2, Tatsuya Miyajima2, Toshifumi Kakiuchi2, Chiho Morita2, Masaharu Aoki1, Yasuhiro Ouchi1, Wataru Aita1, Yasuhiro Kuwana2, Yutaka Noguchi3 1. Yamagata University (Japan), 2. AGC Inc. (Japan), 3. Meiji University (Japan) |
| One of the promising techniques for enhancement of outcoupling efficiency of OLEDs is to lower the refractive index of charge transport layers. In this study, we effectively lower the refractive index of HTL used for OLEDs by co-depositing a perfluororesin, which is stably evaporable by usual thermal deposition. We achieve a low refractive index of a co-deposited HTL of 1.56 (at 550 nm) without deteriorating its... | |
| OLED1-2
10:40 |
Invited Latest Progress of Solution-Process OLED Materials with Small Molecule Based Emission Layers *Kazuki OKABE1, Koichiro Iida1, Kazuhiro Nagayama1, Yuki Oshima1, Yoshimasa Bando1 1. Mitsubishi Chemical Corpration (Japan) |
| Recent progress of materials and inks for the ink-jet printed OLED is reported. Newly developed HIL ink with reduced viscosity gives flat shape in pixels and is the best practice for high-resolution panel. Device performance is improved by new emitters with deep and sharp emission and durable skeleton. | |
| OLED1-3L
11:00 |
Invited Highly Efficient and Pure Blue Fluorescent Organic Light-Emitting Diodes with Excellent Device Stability Duy Cong Le1, *Hideyuki Murata1, Hirofumi Kubota2 1. Japan Advanced Institute of Science and Technology (Japan), 2. Chemical Materials Evaluation and Research Base (Japan) |
| Blue fluorescent organic light-emitting diodes with a high external quantum efficiency of 9.53% and excellent lifetime (LT95 ~1335 h) at 1000 cd/m2 are demonstrated. The LT95 is further enhanced to 3450 h in the device with a triazine derivative used as an electron transport layer. | |
| OLED1-4L
11:20 |
Design for High Efficiency and Wide Color Gamut BT.2020 OLEDs *Shuo-Hsien Cheng1, Shinya Otsu1, Junji Adachi1 1. Kyulux, Inc. (Japan) |
| Hyperfluorescence (HF), which enables high internal quantum efficiency (IQE) and a narrowband emission (< 25 nm) simultaneously, is known as the most promising OLED emitting technology. Incorporating with our original Materials Informatic System, Kyumatic, Kyulux has successfully developed materials for BT.2020 color gamut and attained unparalleled HF performance. |
OLED2: OLED Displays
Dec. 15 13:00-14:00 Room 413
Chair: Yoshinori Fukuda (Futaba)
Co-Chair: Takahiro Komatsu (JOLED)
| OLED2-1
13:00 |
Invited All Inkjet-printed Cadmium-Free Electroluminescent-Quantum Dot Display at 217 ppi Resolution *Jaekook Ha1, Myoungjin Park1, Jin-goo Kang1, Sehun Kim1, Yeo-Geon Yoon1, Changhee Lee1 1. Samsung Display Co., Ltd. (Korea) |
| We demonstrate the world's first all-inkjet-printed Cd-free EL-QD display by successfully overcoming the fabrication- and performance-limiting factors in solution processing. In particular, the intermixing between the stacked layers within the device was eliminated. A study on the critical factors affecting the device performance, including the influence of ETL solvent on quantum dot, is also discussed in detail. | |
| OLED2-2
13:20 |
Ultra-Thin-Encapsulation Layers Fabrication for High-Resolution OLEDs Realized by a Showerhead-Type Initiated CVD and Plasma Enhanced Atomic Layer Deposition Hybrid System *Byeong Gyu Roh1, Hun Hoe Heo1, Seung Chul Park1, Ji Ho Baek1, Sung Gap Im2, Ji Hye Kim3, Seong Jun Jeong3, Hyung Sang Park3 1. LG Display (Korea), 2. KAIST (Korea), 3. iSAC Research Inc. (Korea) |
| We developed a high-performance encapsulation layer for the fabrication of high-resolution OLEDs with UTE(Ultra-Thin-Encapsulation) structure. The UTE structure was achieved by sequential deposition of organic/inorganic layers by iCVD(initiated Chemical Vapor Deposition) and PEALD(Plasma Enhanced Atomic Layer Deposition) processes in a one-chamber system capable of depositing iCVD and PEALD layers. The basic thin film characteristics were investigated systematically. Especially, cross-section analysis clearly illustrated the excellent conformal coverage... | |
| OLED2-3
13:40 |
High Efficiency and Long Lifetime Red Hyperfluorescence Organic Light Emitting Diodes through Dexter Energy Transfer Suppression *Chae Yeon Jeon1, Hyun Seung Lee1, Hyuna Lee1, Jang Hyuk Kwon1 1. Kyung Hee University (Korea) |
| In order to achieve the enhanced hyperfluorescence device performance, we proposed the introduction of 'suppressing DET layer (SDL)' to reduce non-radiative process of the Dexter energy transfer process. With insertion of SDL, HF device exhibited the 1.04 times improved efficiency and 2.03 times longer device lifetime than conventional HF device. |
PH1/OLED3: Cadmium Free QDs
Special Topic of Interest on Quantum Dot Technologies
Dec. 16 9:00-10:20 Room 413
Chair: Kazuhiko Hara (Shizuoka Univ.)
Co-Chair: Toshiaki Ikuta (SK materia JNC)
| PH1/OLED3-1
9:00 |
Green Light-emitting Diodes Using Ag-In-Ga-S/GaSx Quantum Dots with Narrow Spectral Bandwidth *Genichi Motomura1, Yukiko Iwasaki1, Taro Uematsu2, Susumu Kuwabata2, Tatsuya Kameyama3, Tsukasa Torimoto3, Toshimitsu Tsuzuki1 1. NHK (Japan), 2. Osaka University (Japan), 3. Nagoya University (Japan) |
| Light-emitting diodes fabricated using Ag-In-Ga-S/GaSx quantum dots that exhibit vivid green emission were investigated, along with their electroluminescence (EL) properties. Defect-related emission components in the EL spectrum were suppressed by treatment with Ga compounds, and the EL exhibited color purity comparable to the photoluminescence. | |
| PH1/OLED3-2
9:20 |
Enhanced Charge Balance with Antibiotics in Both Electron and Hole Transport Layers of InP/ZnSexS1-x/ZnS-Based Quantum Dot Light-Emitting Diodes *Awais Ali1, Wei Jiang1, Yonghyeok Choi1, Eunhwa Jeon1, Heeyeop Chae1 1. Sungkyunkwan University (Korea) |
| Antibiotic ampicillin was introduced in InP-based quantum dot light-emitting diodes (QLEDs) to achieve charge balance via band alignment, enhancing external quantum efficiency from 0.9% to 4.7%. This is the first report of a QLED in which the same antibiotic material was applied to both the ETLs and HILs. | |
| PH1/OLED3-3
9:40 |
Cadmium Reduced QDs for Superior Brightness and Stability within RoHS Limits *Jan Niehaus1, Horst Weller2,1, Sören Becker1 1. Fraunhofer CAN (Germany), 2. University of Hamburg (Germany) |
| Hereby we present a QD system with quantum yields close to 1, FWHM below 20 nm and high photo stability with cadmium content below 3 %. These particles can produce a color converter with huge absorption in the blue but still in line with the RoHS limits. | |
| PH1/OLED3-4L
10:00 |
Development of Cd-free QD-LEDs for Display Applications and Improvement of Luminous Efficiency *Noboru Iwata1, Takahiro Doe1, Keisuke Kitano1, Yoshihiro Ueta1, Takahiro Adachi1, Makoto Izumi1, Tetsu Tatsuma2, Yasuhiko Arakawa2 1. Sharp Corporation (Japan), 2. The University of Tokyo (Japan) |
| We discuss development of QD-LEDs using Cd-free quantum dots. We have achieved patterning in a size practical for high-resolution displays, estimating the expected EQE derived from the optical evaluation of QDs and the equivalent circuit model of QD-LEDs, and directly measuring the carrier injection efficiency based on photoelectrochemical measurement. |
OLED4: Advanced Technologies
Dec. 16 10:50-11:50 Room 413
Chair: Kengo Kishino (Idemitsu Kosan)
Co-Chair: Yasunori Kijima (Huawei Techs. Japan)
| OLED4-1
10:50 |
Invited Development of Low-Work-Function Electrodes Using Strong Organic Bases and Their Application in Blue OLEDs *Hirohiko Fukagawa1, Tsubasa Sasaki1, Takuya Okada1, Taku Oono1, Takahisa Shimizu1 1. NHK (Japan) |
| The use of strong organic bases was found to decrease the work function of a cathode to a value in the range of 2 to 3 eV. Low-work-function electrodes are effective for not only simplifying the configuration of blue OLEDs but also decreasing their operating voltages. | |
| OLED4-2
11:10 |
Siloxane-encapsulated Quantum Dot Film and Inkjet-printed Patterns Formation for QD-OLED Devices *Byung Doo Chin1, Yoon-Jeong Choi1, Jeong-Yeol Yoo1, Chil Won Lee1, Jang Sub Kim1 1. Dankook University (Korea) |
| We have fabricated color patterning pixels of quantum dot (QD) based on the efficient blue OLEDs and inkjet-printed red/green QD color conversion layers. Synthesized QDs were encapsulated with siloxane using a ligand substitution and reverse micro-emulsion. Uniformity of QD pattern, photoluminescent quantum yield, stability, and QD-OLED conversion performance was investigated. | |
| OLED4-3L
11:30 |
Invited Analysis of Emission Zone Profile in an Organic-Quantum Dots Hybrid Device *HINWAI Mo1, Kentaro Harada2,3, Chihaya Adachi1,3 1. Fukuoka Industry, Science & Technology Foundation (Japan), 2. OPERA Solution Inc. (Japan), 3. Kyushu University (Japan) |
| The emission zone profile of an EL-device is correlated with the balance of n/p-type currents, and device efficiency and roll-off behavior strongly depend on whether the emission peak is distributed or concentrated at a specific interface. The method provides clues for improving the performance of organic-quantum dots hybrid devices. |
OLED5: Flexible OLEDs
Dec. 16 13:30-14:10 Room 413
Chair: Masaya Adachi (Japan Display)
Co-Chair: Takeo Wakimoto (Canon)
| OLED5-1
13:30 |
Invited Self-Powered Ultraflexible Photonic Skin *Tomoyuki Yokota1 1. University of Tokyo (Japan) |
| We have succeeded in developing an ultra-flexible self-powered photonic skin system. The photonic skin composes three different ultra-flexible devices: an organic light emitting diode, an organic photodetector, and an organic solar cell. By attaching the photonic skin to the hand, we succeeded to measure the photoplethysmogram. | |
| OLED5-2
13:50 |
Invited Development of Air Stable Inverted Organic Light-Emitting Diodes and Application to Thin Film Light Sources *Kenji Kuwada1, Naoki Kobayashi1, Tsuyoshi Goya1, Katsuyuki Morii1,2 1. Nippon Shokubai Co., Ltd. (Japan), 2. Nippon Shokubai Research Alliance Laboratories (Japan) |
| We have developed extremely air-stable inverted Organic light-emitting diodes. Our developed organic light-emitting diode, which can be with low barrier performance film, made highly flexible film light sources possible. Possibilities of new light created by highly flexible film light sources will be presented. |
OLEDp1: OLED Technologies
Dec. 15 15:10-16:30 Room 501
| OLEDp1-1 | Deep-Blue Narrowband Multi Resonance Thermally Activated Delayed Fluorescent Emitters for Efficient Organic Light Emitting Diodes *Seung Hyun Lee1, Kenkera Rayappa Naveen1, Young Hun Jung1, Jang Hyuk Kwon1 1. Kyung Hee University (Korea) |
| We designed two new deep blue MR type emitters TPD4PA and tBu-TPD4PA. Both emitters showed deep blue emissions of ~450nm and achieved very small Est and high rate of reverse intersystem crossing of ~2.5 × 105 s-.1. Fabricated TADF devices showed maximum external quantum efficiencies of 30.7 and 32.5% respectively. | |
| OLEDp1-2 | High Performance Green Hyperfluorescence Devices with New BODIPY Materials *Hyun Seung Lee1, Chae Yeon Jeon1, Hyuna Lee1, JangHyuk Kwon1 1. KyungHee University (Korea) |
| Here, we report the new deep green BODIPY fluorescence emitters and efficient deep green hyperfluorescence (HF) devices. The KHU-FD1 exhibits the pure and bright deep green emission peak at 531 nm with 22 nm of narrow spectral width. With 30 wt% of 4CzIPN and 0.5 wt% of KHU-FD1, HF device exhibited the 20.5% of the maximum efficiency, and 531 nm of emission peak with... | |
| OLEDp1-3 | Cathode Metal Patterning in Top Emission OLED through Insertion of Low Surface Energy Organic Molecules *Dong Kwang Kim1, Jin Young Kim1, Hye In Yang1, Jang Hyuk Kwon1 1. Kyung Hee University (Korea) |
| In this paper, we report a cathode metal patterning method by the surface energy control of organic material in thermal evaporation process. In order to make the self-metal patterning, a metal patterning layer (MPL) was introduced before the metal deposition. Among several MPLs, the lowest surface energy materials result in excellent patterning properties in both Mg as well as Ag. | |
| OLEDp1-4 | Electro Static Discharge Optimization Based on Simulation *Xiaoxue Wen1 1. BOE (China) |
| Electro Static Discharge (ESD), which occurs in the OLED-TFT Process, leads the loss of display performance. In this paper, we establish a simulation model with which OLED design can be evaluated and optimized to avoid the ESD of the SD Pattern productive process | |
| OLEDp1-5 | Tandem Blue Top Emission OLEDs with Purcell Factor Considered Optical Simulation *Jin Young Kim1, Hye In Yang1, Dong Kwang Kim1, Jang Hyuk Kwon1 1. Kyung Hee University (Korea) |
| In this paper, we report highly efficient tandem blue top emission OLEDs with our Purcell effect considered optical simulation method. Our fabricated three stack tandem top emission OLED device shows 84.5cd/A current efficiency and 740 blue index efficiency with reasonably good correlated optical simulation results. | |
| OLEDp1-6 | A Quantitative Measurement and Evaluation Scheme for Image Sticking of Micro OLED *Chao Pu1, Qingshan Shan1, Xiaochuan Chen1, Shengji Yang1, Junyan Yang1, Shucheng Yang1, Mingrui Zhang1, Liuzeming Qu1, Lei Wang1, Yuling Wang1, Qi Su1, Zhao Ma1, Zhuoyang Xie1 1. Yunnan Invensight Optoelectronics Technology Co., LTD. (China) |
| A quantitative measurement and evaluation scheme for the image sticking of Micro OLED is proposed and verified. The coincidence degree between the result of this scheme and the judgment result of professionals' visual effect is 95%. The scheme can be used and assist in improving the product user experience. | |
| OLEDp1-7 | Research on Optical Signal Communication Using RGB Color Organic LED Lighting *Naoki Nagashima1, Yuji Sano1 1. Toyo University (Japan) |
| Proposed system can realize two signals simultaneous communication by using red and blue light for signals, separated by their difference in wavelength, with RGB color OLED lighting. The maximum frequency of 20 kHz, capable of audio communication, in emission from the OLED was achieved by using a peaking circuit. | |
| OLEDp1-8L | Instantaneous Determination of the Electronic Transport Properties of Polymer Light Emitting Diodes from their Complex Impedance Spectra Using a Neural Network *Atsushi Okada1, Takashi Nagase2, Takashi Kobayashi2, Hiroyoshi Naito2 1. Osaka Prefecture University (Japan), 2. Osaka Metropolitan University (Japan) |
| Electronic transport properties of polymer light-emitting diodes (PLEDs) were determined using a machine learning model developed with complex impedance spectra generated by device simulation. The mobilities and bimolecular recombination coefficients were instantaneously determined by the machine learning model using experimentally-obtained complex impedance spectra of PLEDs as inputs. |
OLEDp2/AMDp3: AMOLED Displays
Dec. 15 17:00-18:20 Room 501
| OLEDp2/AMDp3-1 | Diode-Connected Pixel Circuit with Leakage Current Compensating Mechanism for P-Type LTPS AMOLED Displays *Yi-Chien Chen1, Po-Cheng Lai2, Po-Chun Lai2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AU Optronics (Taiwan) |
| This work proposes a pixel circuit with a compensating mechanism of leakage current to mitigate voltage fluctuation at the gate node of the driving TFT. The threshold voltage variation of LTPS TFTs is compensated to generate uniform currents. Therefore, the proposed pixel circuit is suitable for use in low-frame-rate displays. | |
| OLEDp2/AMDp3-2 | A Novel AMOLED Pixel Circuit to Alleviate Effects of Leakage Current using Additional Compensation Leakage Current Path Yi-Jui Chen1, *Fang-Yi Lin1, Jui-Hung Chang1, Po-Chun Lai2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AU Optronics Corp. (Taiwan) |
| This work proposes a new AMOLED pixel circuit compensating for the threshold voltage (VTH) of driving TFTs and VDD I-R drop. Moreover, the effect of large leakage currents for LTPS TFTs is alleviated. Simulation results show that the relative current error rates are below 4.72% as VTH varies by ±0.5V. | |
| OLEDp2/AMDp3-3 | Pixel Circuit with Series-Connected Leakage Current Prevention Structure for AMOLED Displays *Yuan-Hao Ho1, Bo-Shu Chen2, Chih-I Liu1, Po-Chun Lai3, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. Novatek Microelectronics Corporation (Taiwan), 3. AU Optronics Corporation (Taiwan) |
| An AMOLED pixel circuit used for low frame rate application is proposed in this article. The relative error is suppressed within 3.08% under threshold voltage variation of driving TFT. The variation of driving current decreases to 8.16 nA when emission time is prolonged to 66.67 ms. | |
| OLEDp2/AMDp3-4 | A New External Compensation Method for AMOLED Display *KookChul Moon1, Yeoungjin Chang1, Junseok Lee2, Min Park2, Junki Hong2 1. Gachon University (Korea), 2. Samsung Display (Korea) |
| The external compensation circuit and method have been used for Oxide TFT in the AMOLED display. However, the real time compensation is very difficult, and the number of fan-out lines should be increased for the conventional external compensation. A new compensation circuit and driving scheme are proposed to reduce fan-out lines and to realize a real time compensation. The application of Oxide TFT would... | |
| OLEDp2/AMDp3-5 | An Analysis of Gaming Display Based on Relationship between Response Time and Refresh Rate for Moving Picture Quality *JINSANG Lee1, Taekyung Lee1, Yeongmoon Kim1, Janghyun Cho1, Eunwoo Roh1, Seungwon Jung1, Duhwan Oh1, Hanseop Kim1 1. LG Display (Korea) |
| In this paper, we studied the correlations among the three key factors: refresh rate, GtG, and response time of major gaming display models and based on this result, we analyzed how OLED can attribute to the high performance monitor panel considering the correlation between MPRT and response time. |
Workshop on 3D/Hyper-Realistic Displays and Systems
| Dec. 15 | 13:00-14:20 | Room 405 | 3D1 | Light Field Displays |
| Dec. 15 | 14:50-16:10 | Room 409 | PRJ5/3D2 | Automotive Display |
| Dec. 15 | 16:40-18:00 | Room 504 | 3D3/VHF5 | Integral Imaging |
| Dec. 16 | 9:00-10:20 | Room 411 | 3D4 | Structural Colors & Light Field Displays |
| Dec. 16 | 10:50-12:10 | Room 411 | 3D5 | Novel 3D Technologies |
| Dec. 16 | 13:30-14:50 | Room 411 | 3D6 | Holography |
| Dec. 14 | 15:10-16:30 | Room 501 | 3Dp1 | 3D/Hyper Realistic Displays |
| Dec. 14 | 15:10-16:30 | Room 501 | 3Dp2 | Deep Learning for 3D Displays |
3D1: Light Field Displays
Dec. 15 13:00-14:20 Room 405
Chair: Yasuhiro Takaki (Tokyo Univ. of Agriculture and Technology )
Co-Chair: Hideki Kakeya (Univ. of Tsukuba)
| 3D1-1
13:00 |
Invited 360-Degree Glassless 3D Display and Its Simplification *Hideaki Takada1 1. Nagasaki University (Japan) |
| We research a method of high-quality 360-degree 3D display with a simple optical structure without 3D glasses. Our proposed method applies 3D visual perception, and a simple optical configuration is advantageous for image quality and structure. We have shown the feasibility of our method from projection verification using a prototype. | |
| 3D1-2
13:20 |
Two-View Autostereoscopic Display for Two Viewers with Wide Viewing Area by Individual Eye Tracking *Hiroki Fujioka1, Goro Hamagishi1,2, Kayo Yoshimoto1,2, Hideya Takahashi1,2 1. Osaka City University (Japan), 2. Osaka Metropolitan University (Japan) |
| We propose the two-view autostereoscopic display using parallax barrier for two people. The feature of this display is individual eye-tracking control for two people to provide high quality 3D image and wide stereoscopic viewing area for them. | |
| 3D1-3
13:40 |
Two-View Autostereoscopic Display Independent of Differences of Interocular Distance and Viewing Condition *Takumi Hori1, Maho Hashimoto1, Goro Hamagishi1,2, Kayo Yoshimoto1,2, Hideya Takahashi1,2 1. Osaka City University (Japan), 2. Osaka Metropolitan University (Japan) |
| We propose the method of compositing stereoscopic images on a two-view autostereoscopic display that can deal with the changes in interocular distance due to the individual differences and the changes in viewing condition. The proposed method reduces crosstalk by using the positions of each eye to composite stereoscopic images. | |
| 3D1-4L
14:00 |
Image Generation Method Using Weight Maps for Subjective Quality Improvement in Two-Dimensional Image Synthetic Integral Three-Dimensional Display *Hayato Watanabe1,2, Jun Arai1, Chihiro Tsutake2, Keita Takahashi2, Toshiaki Fujii2 1. NHK (Japan), 2. Nagoya University (Japan) |
| We propose an image generation method to display three-dimensional (3D) images with high maximum pixel density and improved subjective quality on a two-dimensional image synthetic integral 3D display. In addition to the target light field image, weight maps obtained from the depth information were used to generate the images. |
PRJ5/3D2: Automotive Display
Special Topic of Interest on Automotive Displays
Dec. 15 14:50-16:10 Room 409
Chair: Kazuhiro Ohara (Keynote Photonics)
Co-Chair: Haruki Mizushina (Tokushima Univ.)
| PRJ5/3D2-1
14:50 |
Invited Nanoparticles for High-Luminance Light-Emitting Diodes for Efficient Automotive Systems *Juan J Santaella1, Salvador Rodríguez-Bolívar2, Lucía Puga-Pedregosa1, Alberto González-Rico1, María Marín-González1, Francisco M Gómez-Campos2 1. Valeo Lighting Systems (Spain), 2. Universidad de Granada (Spain) |
| The automotive industry is undergoing some technological revolutions that are shaping the greatest ever upheaval in transportation. These forces are giving rise to three disruptive technological trends: electrification, autonomous vehicles, and digital mobility. In the frame of these revolutions, quantum dots (QDs) might challenge the current lighting emitting diode (LED). | |
| PRJ5/3D2-2
15:10 |
A Measurement-based Active Distortion Compensation for 3D Head-Up-Display *Akinori Sato1, Ayuki Hayashishita1, Kaoru Kusafuka1 1. Kyocera corporation (Japan) |
| Since automotive HUD has a display distortion changing depending on eye position, a 2D HUD has a problem of binocular disparity caused by the difference in distortion between the right and left eye positions. Using a parallax barrier 3D HUD with eye tracking, we show that the above problem can be solved by performing proper 3D image composition and distortion compensation according to each of the... | |
| PRJ5/3D2-3
15:30 |
Change in Long-Range Pop-up Distance of Arc 3D Display Due to Substrate Installation Angle *Hiroto Oishi1, Masaki Yasugi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| We clarified the long-range pop-up distance to almost half of observation distance in front of the substrate of arc 3D display. Simulation of the pop-up distance by changing the angle of substrate installation leads that the pop-up distance increases as the substrate is shifted closer to the perpendicular of ground. | |
| PRJ5/3D2-4
15:50 |
Factors and Countermeasures for 3D Image Sickness in 3D Head-up Display *Kazumasa Matsuda1, KAORU KUSAFUKA1 1. KYOCERA Corporation (Japan) |
| The parallax barrier type 3D-HUD virtual image display uses binocular disparity to recognize the 3D images, but due to the inconsistency between congestion and adjustment, 3D image sickness is likely to occur due to the relationship between the crosstalk ratio of the 3D virtual image and the amount of parallax. By clarifying the relationship between above factors quantitatively, the conditions for reducing 3D image sickness are calculated. |
3D3/VHF5: Integral Imaging
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 15 16:40-18:00 Room 504
Chair: Toshiaki Fujii (Nagoya Univ.)
Co-Chair: Nobuyuki Hiruma (NHK-ES)
| 3D3/VHF5-1
16:40 |
Invited Perceptual Assessment of Depth-compressed Scene for Automultiscopic 3D Display *Yamato Miyashita1, Yasuhito Sawahata1, Kazuteru Komine1 1. NHK (Japan) |
| We present the required depth reconstruction range for future automultiscopic 3D displays preventing from inducing feelings of unnaturalness. Using “depth compression” that contracts the whole scene into a limited depth range of a display, we show experimental evidence that a depth of just 10 cm is sufficient when utilizing head-tracking. | |
| 3D3/VHF5-2
17:00 |
Realization of Smooth Motion Parallax by Coarse Integral Imaging with Interleaved Elemental Fresnel Lenses *Hideki Kakeya1, Garimagai Borjigin1 1. University of Tsukuba (Japan) |
| This paper applies a lens array composed of interleaved elemental lenses to coarse integral imaging. The interleaved lenses consist of elemental prisms whose slope angle corresponds to two adjacent convex lenses, where the width of each prism changes gradually. Smooth motion parallax is realized as a result. | |
| 3D3/VHF5-3
17:20 |
Design and Analysis of Integral Imaging Based 3D Light-Field Display Kai-Siang Hsu1, *Chia-yuan Chang1, Hoang-Yan Lin1 1. National Taiwan University (Taiwan) |
| Using the Computer Generated Elemental Image (CGEI) algorithm, we realize the generation of elemental image from the 2D image and its depth map, and use the ray-tracing method to simulate and analyze the reconstructed planes of different depths. Finally, naked eye 3D display and VAC free can be achieved. | |
| 3D3/VHF5-4
17:40 |
Static Color Moiré Reduction Technology for Flat Panel Integral 3D Display *Hisayuki Sasaki1, Naoto Okaichi1, Hayato Watanabe1, Masanori Kano1, Jun Arai1 1. NHK (Japan) |
| We describe a technique to reduce the color moiré that is peculiar to flat panel integral 3D displays. By using a wavelength-selective polarizing element and polarization diffractive elements, each subpixel is converted into a white pixel, it is possible to reduce the color moiré with a thin and static configuration. |
3D4: Structural Colors & Light Field Displays
Dec. 16 9:00-10:20 Room 411
Chair: Shiro Suyama (Utsunomiya Univ.)
Co-Chair: Masaru Tsuchida (NTT)
| 3D4-1
9:00 |
Invited Kirameki Display: Practical Light Field Display to Represent Real Texture *Naoki Sumi1, Keiko Edo1, Shuji Hagino1 1. Innolux Japan Co., Ltd (Japan) |
| We have developed “Kirameki display” that can represent real texture of materials. In addition, we have built Unity Kirameki plugin that enable us to generate a real-time and interactive “texture representation” video with 60Hz frame rate with 4K display. Finally, we discuss more advanced technologies for texture representation. | |
| 3D4-2
9:20 |
Invited 8K Digital Content Creation of Cultural Properties having Structural Colors *Takafumi Koike1, Yuki Asahina1, Hiroaki Okumoto2, Keiko Nakamoto1, Tadashi Motoyama2 1. Hosei University (Japan), 2. Sharp Marketing Japan Corporation (Japan) |
| We are working to realize a high-quality, interactive experience with cultural properties as digital content. We have developed a method to reproduce the texture of cultural properties with structural colors by using several computer graphics techniques. | |
| 3D4-3
9:40 |
Natural 3D (N3D) Display Technology and Its Medical Application for DICOM Image Viewer *Keiko Edo1, Naoki Sumi1, Hao-Yu Liu2, Ruey-Jer Weng2, Wei-Yi Lu2, Shuji Hagino1 1. Innolux Japan Co., Ltd. (Japan), 2. Innolux Corporation (Taiwan) |
| We have developed N3D display that is one of the light field display with high spatial and angular resolution, less image blur and correct depth reproduction. Additionally, we propose a N3D DICOM image viewer as a prototype. It's expected to be used for several applications in future. | |
| 3D4-4L
10:00 |
A Study on Autostereoscopic 3D Display Crosstalk Measurement and Quantification *Youngmin Park1, Jin Seo1, Aree Song1, Ojun Kwon1, Eunjung Lee1, Jaejoong Kwon1 1. Samsung Display (Korea) |
| The 3D light field display allows both eyes to perceive different images, giving a three-dimensional effect. However, when an unintentional image is perceived by the eye, one feels dizzy or sees a distortion of the three-dimensional effect, and this phenomenon is called crosstalk. How to evaluate and quantify crosstalk is very important in the development of 3D displays. In this study, a method to... |
3D5: Novel 3D Technologies
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 16 10:50-12:10 Room 411
Chair: Hirotsugu Yamamoto (Utsunomiya Univ.)
Co-Chair: Takafumi Koike (Hosei Univ.)
| 3D5-1
10:50 |
Invited Aerial Volumetric Display with Femtosecond-Laser-Driven Colored Voxels *Kota Kumagai1, Tatsuki Mori1, Yoshio Hayasaki1 1. Utsunomiya University (Japan) |
| A volumetric display is capable of creating three- dimensional images in physical space by generating light emission, scattering or absorption points. We introduce two coloring methods of femtosecond-laser-driven aerial voxels for a volumetric display. One method extracts an arbitrary color from broadband emission of a voxel using two parabolic mirrors and a liquid-crystal color filter. The other uses scattering light of laser-excited aerial plasma. These methods... | |
| 3D5-2
11:10 |
Binocular Near Eye DFD Display System with Reduced Visual Fatigue *Naoyasu Ikeda1, Tetsushi Sato1, Tetsuro Tashiro1, Yukie Ibata1, Kazunori Masumura1, Koji Shigemura1 1. Tianma Japan, Ltd. (Japan) |
| Binocular near eye DFD display system was constructed using binary focus lenses and polarization modulators. Visual fatigue due to 3D image was evaluated about this DFD system and one with only vergence. It was confirmed that this DFD system 3D image has less visual fatigue than one with only vergence. | |
| 3D5-3
11:30 |
Depth Perception Characteristics in Plane Fog Screen *Masaki Umemoto1, Haruki Mizushina1, Shiro Suyama2, Kenji Yamamoto1 1. University of Tokushima (Japan), 2. University of Utsunomiya (Japan) |
| We discuss the phenomenon that the projected image is not perceived at exact screen location when plane fog screen (PFS) is used in projector system, and the location of the perceived image depends on the observers position etc. It can be expected this phenomenon could be applied to 3D display in future. | |
| 3D5-4L
11:50 |
Dependence of 3D Image Contrast on Ceiling/Background Illumination and Screen Reflectance in a Volumetric Display using a Helical Rotating Screen *Karin Wakatsuki1, Chiemi Fujikawa1, Makoto Omodani2 1. Tokai University (Japan), 2. Tokyo Denki University (Japan) |
| The equations for calculating 3D image contrast considering illumination from the ceiling/background and screen reflectance were derived. We also measured contrast on our volumetric 3D display using a helical rotating screen. The effects of ceiling/background illumination and screen reflectance on the 3D image contrast were clarified. |
3D6: Holography
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 16 13:30-14:50 Room 411
Chair: Kenji Yamamoto (Tokushima Univ.)
Co-Chair: Yoshitomo Isomae (Sony)
| 3D6-1
13:30 |
Invited Recent Progress on Optical-See-Through Near to Eye Displays with Focus Cue Support *Jae-Hyeung Park1 1. Inha University (Korea) |
| Near-eye-display is a key device in augmented reality applications. Most of the commercialized near-eye-displays rely on only stereopsis in presenting three-dimensional images, which causes problems especially when the image depth is small. Presenting not only stereopsis but also monocular focus cues is crucial in solving these problems. In this talk, we introduce our recent research on optical-see-through near-eye-display with focus cue support. We present our work... | |
| 3D6-2
13:50 |
Optical Reconstruction of 3D Information Acquired by Incoherent Digital Holography *Tetsuhiko Muroi1, Ryo Higashida1, Teruyoshi Nobukawa1, Yutaro Katano1, Kei Hagiwara1 1. NHK (Japan) |
| Holograms acquired by incoherent digital holography (IDH) contain information on the depth direction. We acquired objects placed at different depths by IDH, generated a hologram for display by using the acquired hologram for calculation, and reconstructed the hologram. As a result, we could display images of objects three-dimensionally. | |
| 3D6-3
14:10 |
Color Holographic Image Generation Using Pulse-modulated MEMS SLM *Kotaro Ichikawa1, Rei Shuto1, Toshihiro Uruma1, Takumi Matsumoto1, Mitaro Namiki1, Yasuhiro Takaki1 1. Tokyo University of Agriculture and Technology (Japan) |
| The holographic display using the pulse-modulated MEMS SLM can provide a large viewing zone angle, i.e. over 40 degrees. This study develops two techniques to enable the color image generation: one uses an RGB coupler array, and the other uses an RGB fiber array. The experimental varication is shown. | |
| 3D6-4
14:30 |
Faithful Wavefront Synthesis for Holography Using Light Field and Depth Information *Takayuki Koyama1, Toshihiro Uruma1, Yasuhiro Takaki1 1. Tokyo University of Agriculture and Technology (Japan) |
| A novel image capturing technique for holography is proposed, which utilizes both the light field and depth cameras. The depth and light field information are used to determine the shapes of zone plates and their amplitude modulation, respectively. The proposed technique can generate faithful wavefronts which produce sharp 3D images. |
3Dp1: 3D/Hyper Realistic Displays
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 14 15:10-16:30 Room 501
| 3Dp1-1 | The Floating Touch Stereoscopic Display System with Eye-Tracking *Haibing Shao1, Jing Zhang1, Xin Zhang1, Jiangbo Yao1 1. Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. (China) |
| This paper proposes a floating touch stereoscopic display system combined with eye tracking. Floating touch mitigates the focusing conflict effectively compared to mouse operation other indirect ways. And eye-tracking can avoid display error caused by eye movement and interaction failure due to absence of motion parallax. It's demonstrated that the proposed system raised interaction success rate obviously especially people watch from the side. | |
| 3Dp1-2 | A Study for Retrieving Teeth Gingival Margin from Three-Dimensional Digital Model *Rui-Bin Chern1, Tzung-Han Lin1 1. National Taiwan University of Science and Technology (Taiwan) |
| Gingival margin (GM) identifies the necessary portion when people manufacture clear aligners. In automatic manufacturing system, it is considered as a three-dimensional (3D) line which needs to be cut and separated. This study proposes a model analysis method which is able to determine the 3D coordinate points of the patient's gingival margin based on curvature information. | |
| 3Dp1-3 | Biocular Holographic Screen for Computer-Generated Hologram *Pei Chen Sung1, Shao Kui Zhou1,2, Wen Kai Lin1,2, Wei Chia Su1 1. National Changhua University of Education (Taiwan), 2. National Yang Ming Chiao Tung University (Taiwan) |
| In this study, the biocular CGH display is proposed. This system is composed of a biocular holographic screen and the CGH reconstruction system. Observers can watch 3D AR images on the holographic screen. The FOV of the proposed system can achieve 9.54° both in horizontal and vertical direction. | |
| 3Dp1-4 | Evaluation of Motion Parallax to Reduce Cardboard Effect when Stimulus of Stereo Images Are Natural Scene *Kosuke Takahashi1, Haruki Mizushina1, Shiro Suyama2, Kenji Yamamoto1 1. Tokushima University (Japan), 2. Utsunomiya University (Japan) |
| Cardboard effect in stereo images can be successfully reduced if the motion parallax is properly given to binocular disparity. We evaluate whether the cardboard effect in can be reduced in natural-scene stereo images by adding motion parallax for four shooting distance. | |
| 3Dp1-5L | Displaying Multiple 3D Scenes with a Single Layered Display *Chisaki Sato1, Chihiro Tsutake1, Keita Takahashi1, Toshiaki Fujii1 1. Nagoya University (Japan) |
| We propose a method of displaying two different 3D scenes on a single layered light-field display, where the layer patterns are optimized for the two scenes simultaneously. We demonstrate that both scenes can be displayed in high quality when the viewing zones for them are separated sufficiently. | |
| 3Dp1-6L | Moiré Reduction Method for Visually Equivalent Light Field Display Using Special Barrier Aperture Structure *Munekazu Date1, Tokinobu Mitasaki1, Ayumi Matsumoto1, Masaki Kitahara1 1. Nippon Telegraph and Telephone Corporation (Japan) |
| A visually equivalent light field 3D (VELF3D) display is a parallax-barrier-type autostereoscopic 3D display. Since stripes of the barrier and pixels are in parallel, moiré occurred, when the barrier is placed on the screen. In this paper, we suppressed moiré by only providing unevenness in the aperture shape of the barrier. | |
| 3Dp1-7L | Light Field Capturing Method Using Aerial Image and Lens Array for Integral 3D Display *Masanari Kameyama1, Masahiro Kawakita1 1. Osaka Institute of Technology (Japan) |
| We proposed a novel light-field capturing method that uses aerial images of objects and a lens array to obtain light rays from moving objects. A prototype system with a single camera is relatively compact, and can capture and display integral three-dimensional images in real time. | |
| 3Dp1-8L | Super-Multiview Tabletop Display with Two-Dimensional Parallax Based on Time Division Multiplexing Parallax Barrier *Genki Takeuchi1, Hideki Kakeya1 1. University of Tsukuba (Japan) |
| In this paper, we propose a tabletop super-multiview display that reproduces two-dimensional parallax to induce focal effect to the lines with arbitrary inclination angles. The proposed method shows parallax barrier patterns with two differently tinted angles and the images with corresponding directions of parallax by time-division multiplexing. | |
| 3Dp1-9L | Development of a Holographic Directional Volumetric Display Prototype *Tomoya Isayama1, Naoto Hoshikawa2, Hirotaka Nakayama3, Tomoyoshi Shimobaba1, Tomoyoshi Ito1, Atsushi Shiraki1 1. Chiba University (Japan), 2. Oyama College (Japan), 3. National Astronomical Observatory of Japan (Japan) |
| This study developed a prototype system that combines electronic holography and directional volumetric display, thereby enabling the observation of holographic projection images. Consequently, we confirmed that it was possible to observe different holographic reconstruction images from both directions of a volumetric display. | |
| 3Dp1-10L | Real-time Aerial 3D Display Using Holographic Projector *Junai Uchida1, Shomu Wada1, Yuuka Narishima1, Yoshihiro Oda1, Yoshiki Moriguchi1, Naoki Takada1 1. Kochi University (Japan) |
| We report aerial 3D display using holographic projector and retroreflector. Holographic projector projects the focused 3D image on 3D screen. The transmitted diffuse light generates a 3D real image in air using retroreflector. Finally, we realized real-time aerial 3D display of the 3D movie comprising 28,520 points at 30 fps. | |
| 3Dp1-11L | Real-time 4K Electroholography with Multi-GPU Cluster System Based on Ampere Architecture *Yuuka Narishima1, Towa Mitani1, Shomu Wada1, Kohei Suzuki1, Hashizo Hamada1, Naoki Takada1 1. University of Kochi (Japan) |
| We report a real-time electroholography based on 4K-resolution amplitude-type computer-generated hologram (CGH). We implemented the CGH computation algorithm to reduce the number of the trigonometric function calculations on the multi-GPU cluster system with 13 ampere-architecture GPUs. Finally, we realized a real-time reconstruction of a 3D model comprising approximately 100,000 points. | |
| 3Dp1-12L | Second Screen Support for Teaching Materials Using Stereoscopic Representation *Yuya Nishikawa1, Naoto Hoshikawa2, Tomoyoshi Ito1, Atsushi Shiraki1 1. Chiba University (Japan), 2. National Institute of Technology, Oyama College (Japan) |
| In recent years, Virtual Reality (VR) technology has been utilized in the field of education, and VR teaching materials using head-mounted displays (HMDs) have been developed. In this research, a VR teaching system using only smartphones is developed so that more people can experience VR teaching materials. The system supports second screen so that the VR experience can be shared simultaneously on multiple devices. | |
| 3Dp1-13L | Development of Learning Materials on the Diffraction Phenomena of Light Waves and a System for Observing Reproduced Images of Holography Using the Virtual Reality Technology *Junya Endo1, Bunta Nakano1, Naoto Hoshikawa2, Tomoyoshi Shimobaba1, Tomoyoshi Ito1, Atsushi Shiraki1 1. Chiba University (Japan), 2. National Institute of Technology, Oyama College (Japan) |
| In Japan, the “shift away from science” has been discussed. In addition, the Japanese government has recently been promoting the use of Information and Communications Technology in education. Based on this, we developed learning materials using the virtual reality technology and proposed effectiveness of these learning materials. |
3Dp2: Deep Learning for 3D Displays
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 14 15:10-16:30 Room 501
| 3Dp2-1L | The Proposal of Image Quality Improvement Method for Directional Volumetric Displays Using Deep Learning *Yuta Fukumoto1, Naoto Hoshikawa2, Hirotaka Nakayama3, Tomoyoshi Ito1, Atsushi Shiraki1 1. Chiba University (Japan), 2. National Institute of Technology,Oyama College (Japan), 3. National Astronomical Observatory of Japan (Japan) |
| The currently used directional volumetric display, whichuses threads, and a projector has the issue .In this study, aiming at solving theabove-mentioned problem, a projection image wascreated using a new approach that uses deep learning toadjust light rays. |
Workshop on Applied Vision and Human Factors
| Dec. 14 | 13:00-14:20 | Room 411 | VHF1/DES1 | Image Quality and Analysis |
| Dec. 14 | 14:50-15:50 | Room 411 | VHF2 | Virtual Reality |
| Dec. 14 | 16:40-18:00 | Room 411 | VHF3/FMC3 | Ergonomics and Display Measurement |
| Dec. 15 | 13:00-14:20 | Room 411 | VHF4 | Shitsukan and Color |
| Dec. 15 | 16:40-18:00 | Room 504 | 3D3/VHF5 | Integral Imaging |
| Dec. 16 | 10:50-12:10 | Room 402 | DES5/VHF6 | Display Systems for Automotive |
| Dec. 15 | 10:40-12:00 | Room 501 | VHFp1 | Image Quality |
| Dec. 15 | 10:40-12:00 | Room 501 | VHFp2 | Display Quality for Automotive Applications |
VHF1/DES1: Image Quality and Analysis
Dec. 14 13:00-14:20 Room 411
Chair: Yoshie Imai (Mitsubishi Elec.)
Co-Chair: Haruhiko Okumura (Toshiba)
| VHF1/DES1-1
13:00 |
Invited Next Generation Personalized Display Systems Employing Adaptive Dynamic-Range Compression Techniques Considering Circadian Rhythm and Personal Behaviors *Sakuichi Ohtsuka1, Saki Iwaida2, Yuichiro Orita3, Shoko Hira3, Masayuki Kashima3 1. International College of Technology, Kanazawa (Japan), 2. Kagoshima Clinical Engineering College (Japan), 3. Kagoshima University (Japan) |
| Reproducing fidelitous images, those that include the individual impressions induced when the real scene is viewed, is important. Our previous studies and other physiological research results suggest that the human visual system characteristic dynamically changes depending on circadian rhythm and personal behavior. This paper describes these findings and future issues. | |
| VHF1/DES1-2
13:20 |
GAN Based Image-to-Image Translation Model for Nighttime Road Scene Dataset *Rebeka Sultana1, Yuki Hikosaka1, Gosuke Ohashi1 1. Shizuoka University (Japan) |
| A large-scale dataset boosts the performance of deep learning models. However, in-vehicle camera image datasets contain many daytime and few nighttime scenes. Therefore, this study proposes an image-to-image translation model to convert daytime road scenes to nighttime road scenes by preserving visual appearance and contents to increase nighttime dataset. | |
| VHF1/DES1-3
13:40 |
Invited Joint Monocular Depth Model for Depth Perception Enhancement Based on Shading, Contrast, and Motion Parallax *Seungchul Aiden Ryu1, Hyunjin Yoo1, Tara Akhavan1 1. Faurecia Irystec (Canada) |
| This paper proposes a novel joint model to enhance monocular depth perception, significantly improving both depth volume perception and depth range perception. The proposed framework can provide an enhanced depth perception on any conventional 2D display, but also it can be applicable to the 3D display devices since it is complimentary for binocular depth cues. | |
| VHF1/DES1-4
14:00 |
Deep Learning Based Layered Point Cloud Compression for Representing Shape Aware Level of Detail *Hideaki Kimata1 1. Kogakuin University (Japan) |
| Point cloud compression methods based on deep learning are being studied. Extracting a part of point cloud from compressed data to grasp the characteristic shape of an object is an important function. I propose ranking and hierarchical coding that can sequentially decode main features of point cloud. |
VHF2: Virtual Reality
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 14 14:50-15:50 Room 411
Chair: Hiroyasu Ujike (AIST)
Co-Chair: Takashi Shibata (Tokai Univ.)
| VHF2-1
14:50 |
Invited Using Galvanic Vestibular Stimulation (GVS) to Enhance User Experiences in HMD-Based Virtual Reality *Juno Kim1, Peter Wagner1, Rahm Ranjan1, Yuyang Cai1, Xiaona Ping1, Shinichi Iwasaki2, Stephen Palmisano3 1. University of New South Wales (Australia), 2. Nagoya City University (Japan), 3. University of Wollongong (Australia) |
| Research shows that visual-vestibular interactions can have profound effects on experiences of self-motion, presence and cybersickness in virtual reality (VR) using head mounted displays (HMDs). We review some of this literature and provide new insights into how Galvanic Vestibular Stimulation (GVS) could help to improve user experiences in HMD VR. | |
| VHF2-2
15:10 |
Invited Research of Visual Haptics for Remote Machine Manipulation via Brain Signal Evaluation toward Robot Implementation *Masaki Haruna1, Noboru Kawaguchi1, Shota Narasaki1, Masaki Ogino2, Yasutake Takahashi3, Toshiaki Akino Koike4, Susumu Morita1, Reeko Morioka1, Tomoka Shimizu1, Ayako Kanashima5 1. Mitsubshi Electric Corporation (Japan), 2. Kansai University (Japan), 3. University of Fukui (Japan), 4. Mitsubshi Electric Research Laboratory (United States of America), 5. iPLANET Incorporated (Japan) |
| A remote machine operation system is being developed to reduce migrant labor from developing countries to developed countries. The focus is on simplifying the operation interface by utilizing human cognitive characteristics. This paper will introduce visual haptics technology that transmits force haptics of remote machines with video images. | |
| VHF2-3L
15:30 |
Comparison of Super-Resolution Effect by Sub-Frame Division Method of Subjective Super-Resolution Aerial Display *Shoya Kawaguchi1, Akinori Tsuji2, Toyotaro Tokimoto1,3, Masaki Yasugi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan), 2. Tokushima University (Japan), 3. XAiX, LLC (Japan) |
| In the application of the aerial display to subjective super-resolution display, display with switching in 9 sub-frames can be perceived smoother by subjects than in the case of 4 sub-frames. Super-resolution effect is higher when switching frequency is 90 Hz than 40 Hz. |
VHF3/FMC3: Ergonomics and Display Measurement
Dec. 14 16:40-18:00 Room 411
Chair: Johan Bergquist (Consultant)
Co-Chair: Kalil Käläntär (Global Optical Solutions)
| VHF3/FMC3-1
16:40 |
Invited Can We Maintain Space Constancy in Virtual Environments? *Richard HY SO1, Phoebe ML Ching1, Teric TT Chan1, Jerry Jia2 1. The Hong Kong University of Science & Technology (China), 2. Facebook Reality Laboratory (United States of America) |
| Users of Virtual Reality (VR) expect to see space-stabilized scenes when they explore virtual environments with combined head and eye movements. Like our experience in real world, users expect space-constancy during head and eye movements. This talk will present a study to demonstrate the break-down of space-constancy during vestibule-ocular reflexes in VR. | |
| VHF3/FMC3-2
17:00 |
Effect of Presentation Position on the Visibility of Dynamic Signs *Hiroshi Watanabe1, Nana Itoh1, Hiroyasu Ujike1, Ken Sagawa1, Reiko Sakata2, Naoki Furuhata2 1. National Institute of Advanced Industrial Science and Technology (AIST) (Japan), 2. Mitsubishi Electric Corporation (Japan) |
| Dynamic signs provide warning and guidance information by using images that change visual properties (luminance, size, location, etc.) depending on their situation. In this paper, we study the effect that the presentation position of dynamic signs has on their visibility among three age groups. | |
| VHF3/FMC3-3
17:20 |
Invited Display Reflectance: Clearing the Haze *Michael E. Becker1 1. Display-Messtechnik&Systeme (Germany) |
| Analysis of the point-spread function (PSF) yields thedirectional variations of display reflectance with highresolution in the vicinity of the specular direction and now -at reduced resolution - also at off-specular directions, thusproviding a data basis for determination of a set of completein-plane BRDFs/BTDFs. | |
| VHF3/FMC3-4L
17:40 |
Effect of Pixel Aperture Ratio on Subjective Spatial Resolution *Keita Nakamura1, Midori Tanaka1, Takahiko Horiuchi1, Kenichiro Masaoka2,3 1. Chiba University (Japan), 2. NHK Science & Technology Research Laboratories (Japan), 3. NHK Engineering System, Inc. (Japan) |
| We conducted a psychophysical experiment to evaluate the subjective spatial resolution of random dot stimuli with different pixel aperture ratios. It was confirmed that even at an angular resolution of 30 cycles per degree, which corresponds to the standard viewing condition, the pixel aperture ratio affects the subjective spatial resolution. |
VHF4: Shitsukan and Color
Dec. 15 13:00-14:20 Room 411
Chair: Masamitsu Harasawa (NHK)
Co-Chair: Kenichiro Masaoka (NHK)
| VHF4-1
13:00 |
Invited The Criterion of the Facial Skin Tone Judgement *Katsuaki Sakata1, Hitomi Shimakura2 1. Joshibi University of Art and Design (Japan), 2. Shiseido Co., Ltd (Japan) |
| Facial skin tone judgment has practical applications. Response probability of the participants revealed that discernment reference points are those closest to the average facial skin tone of an individual's belonging group. People unconsciously memorise and reference the facial skin tone of familiar persons as a criterion for skin tone judgment. | |
| VHF4-2
13:20 |
Invited Image Features and Perception of Object Surface Qualities *Takehiro Nagai1 1. Tokyo Institute of Technology (Japan) |
| Different types of image cues for surface quality perception, such as glossiness, have been discovered by psychophysical studies. In this talk, I will discuss basic strategies of the visual system to grasp surface qualities and recent progress in research on surface quality perception by showing some psychophysical results. | |
| VHF4-3
13:40 |
Interactions in the Material Appearance of Colored Semi-Opaque 3D Objects Simulated on Generic Computer Displays *Yuyang Cai1, Hiroaki Kiyokawa2,3, Takehiro Nagai2, Leyla Haghzare1, Matthew Arnison4, Juno Kim1 1. University of New South Wales (Australia), 2. Tokyo Institute of Technology (Japan), 3. Advanced Industrial Science and Technology (AIST) (Japan), 4. Bandicoot Imaging sciences (Australia) |
| This study examined the perception of gloss and color of translucent objects rendered on generic computer displays of remote users. We found critical perceptual interactions between the experiences of gloss and color (lightness and saturation), which might be explained by models that consider chromatic variations in the structure of images. | |
| VHF4-4
14:00 |
Two-Fold Color Compensation Algorithm Operation for Optical See-Through Head Mounted Display *hyeonseok Eo1, sungeun Park1, wooksung Kim1 1. Pohang University of Science and Technology (POSTECH) (Korea) |
| This paper presents the improvement of color usability of optical see-through head mounted displays (OST-HMDs). As a solution to the black and color distortion, we proposed a new color compensation method adding a secondary display to OST-HMDs. The compensation results showed a compensation ratio of 99.26 %. |
3D3/VHF5: Integral Imaging
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 15 16:40-18:00 Room 504
Chair: Toshiaki Fujii (Nagoya Univ.)
Co-Chair: Nobuyuki Hiruma (NHK-ES)
| 3D3/VHF5-1
16:40 |
Invited Perceptual Assessment of Depth-compressed Scene for Automultiscopic 3D Display *Yamato Miyashita1, Yasuhito Sawahata1, Kazuteru Komine1 1. NHK (Japan) |
| We present the required depth reconstruction range for future automultiscopic 3D displays preventing from inducing feelings of unnaturalness. Using “depth compression” that contracts the whole scene into a limited depth range of a display, we show experimental evidence that a depth of just 10 cm is sufficient when utilizing head-tracking. | |
| 3D3/VHF5-2
17:00 |
Realization of Smooth Motion Parallax by Coarse Integral Imaging with Interleaved Elemental Fresnel Lenses *Hideki Kakeya1, Garimagai Borjigin1 1. University of Tsukuba (Japan) |
| This paper applies a lens array composed of interleaved elemental lenses to coarse integral imaging. The interleaved lenses consist of elemental prisms whose slope angle corresponds to two adjacent convex lenses, where the width of each prism changes gradually. Smooth motion parallax is realized as a result. | |
| 3D3/VHF5-3
17:20 |
Design and Analysis of Integral Imaging Based 3D Light-Field Display Kai-Siang Hsu1, *Chia-yuan Chang1, Hoang-Yan Lin1 1. National Taiwan University (Taiwan) |
| Using the Computer Generated Elemental Image (CGEI) algorithm, we realize the generation of elemental image from the 2D image and its depth map, and use the ray-tracing method to simulate and analyze the reconstructed planes of different depths. Finally, naked eye 3D display and VAC free can be achieved. | |
| 3D3/VHF5-4
17:40 |
Static Color Moiré Reduction Technology for Flat Panel Integral 3D Display *Hisayuki Sasaki1, Naoto Okaichi1, Hayato Watanabe1, Masanori Kano1, Jun Arai1 1. NHK (Japan) |
| We describe a technique to reduce the color moiré that is peculiar to flat panel integral 3D displays. By using a wavelength-selective polarizing element and polarization diffractive elements, each subpixel is converted into a white pixel, it is possible to reduce the color moiré with a thin and static configuration. |
DES5/VHF6: Display Systems for Automotive
Special Topic of Interest on Automotive Displays
Dec. 16 10:50-12:10 Room 402
Chair: Haruhiko Okumura (Toshiba)
Co-Chair: Yuzo Hisatake (Shizuoka Univ.)
| DES5/VHF6-1
10:50 |
Invited Automotive Exterior Displays: System Parameters and Technologies to Improve Traffic Safety *Karlheinz Blankenbach1, Nadine Nowak1 1. Pforzheim University (Germany) |
| Autonomous driving will change traffic behavior: Visual communication with a “driver” is not feasible, especially for pedestrians. Exterior displays can fill this gap and raise traffic safety incl. manual driving. We report on use cases, ambient light measurements, display size and technologies and evaluations with subjects for symbols and readability. | |
| DES5/VHF6-2
11:10 |
Invited Human Sensing and HMI for Safe Transition from L2 and L3 Automated to Manual Driving *Toshihisa Sato1 1. National Institute of Advanced Industrial Science and Technology (AIST) (Japan) |
| This paper describes human factor issues of system-initiated transitions from level 2 and level 3 automated (SAE definition) to manual driving. We investigated biometric indices that could detect a decline in driver states during level 2 use. As for the planned transition from the level 3 system, we have developed quantitative evaluation methods for the driver's attentiveness before he/she receives RtI (Request to Intervene)... | |
| DES5/VHF6-3
11:30 |
The Impact of Sensor Noise on the Reproducibility of Sparkle Values for Different Measurement Setups *Ingo Rotscholl1, Udo Krüger1 1. TechnoTeam Bildverarbeitung GmbH (Germany) |
| This contribution examines the influence of ILMD noise on the reproducibility of different sparkle evaluation setups. Sparkle measurements at different sampling rates and aperture numbers are simulated for different ILMD sensors. Especially at low sparkle levels, the SNR can become very critical for some evaluation techniques such that the number of measurements needs to be increased significantly to ensure reproducibility among the different ILMD sensors. | |
| DES5/VHF6-4L
11:50 |
Invited How Users Experience Autonomous Vehicle Driving: Provision of Information Through AR HUD *Vassilis Charissis1 1. Glasgow Caledonian University (UK) |
| This work examines if the provision of information through Augmented Reality (AR) Head-Up Display (HUD) alleviates passengers' anxiety during autonomous vehicle (AV) driving. The evaluation was performed in a VR driving simulator, by ten volunteer users. The preliminary results present the benefits and drawbacks experienced by the users. |
VHFp1: Image Quality
Dec. 15 10:40-12:00 Room 501
| VHFp1-1 | Reflected Light vs. Transmitted Light: Do They Give Different Impressions to Users? *Ryohei Nakatsu1, Manae Miyata2, Hirotaka Kawata2, Naoko Tosa1, Takashi Kusumi1 1. Kyoto University (Japan), 2. Seiko Epson (Japan) |
| Marshal McLuhan proposed in his book the well-known hypothesis that ''reflected light makes people analytical and transmitted light makes them emotional.'' In this study, we achieved the comparison between a projector (reflected light) and a display (transmitted light) based on a psychological experiment. | |
| VHFp1-2L | Comparison of Note-Taking Efficiencies when using Standard- and Paperlike-Films Installed on Tablet-PC with Stylus Pen *Anis Ur Rehman1, Takashi Hara1, Toru Kuniya1, Takaaki Fukuzoe1, Kana Soyama1, Sakuichi Ohtsuka2 1. National Institute of Technology, Kagoshima College (Japan), 2. International College of Technology, Kanazawa (Japan) |
| This study investigates eight IT and English-fluent undergraduate students' writing performance in two tasks; 1) tracing, and 2) note-taking speed, when using Standard-Protective-Film (SPF) and Paperlike-Film (PLF). The results demonstrate no significant differences in tracing or note-taking speeds, however, user preferences were dispersed, suggesting that variety is required for personal use. | |
| VHFp1-3L | The Effect of Extended Visual Angle on Flicker Perception using OLED Display: Comparison with Flicker Indices *Hyosun Kim1, Minkyung Kim1, Hyungsuk Hwang1, Youra Kim, Eunjung Lee1, Dongyeol Yeom1, Jaejoong Kwon1 1. Samsung Display (Korea) |
| Simulating images with 30 Hz, we observed the size effect on display flicker with the extended range of 60°. Participants perceived flicker to be stronger as the size of stimuli increased. However, none of flicker indices reflected this tendency. Flicker indices need to be supplemented to include the size effect. | |
| VHFp1-4L | Analysis of Gaze while Viewing Videos at Various Playback Speeds *Hideaki Takahira1, Yasutomo Kawanishi1,2, Takatsugu Hirayama1,3, Hiroshi Murase1, Daisuke Deguchi1 1. Nagoya University (Japan), 2. RIKEN (Japan), 3. University of Human Environments (Japan) |
| We analyze gaze while viewing videos at various playback speeds. The aims of this paper are to evaluate the comprehension and viewability of videos. In our experiment, we used 0.75x to 3.0x speed, and measured gaze. We report differences in gaze behavior among different playback speeds in viewing same video. | |
| VHFp1-5L | Visualization of Observer Variability in Color Appearance on Wide Color Gamut Display *Yuna Tomita1, Tomokazu Shiga1 1. The University of Electro-Communications (Japan) |
| A method for simulating color appearance in natural images for color-normal observer having non-CIE standard color matching functions was presented. The observer variability can be visually recognized by observing the original and simulated images on the same display. The simulation results clearly showed large differences in wide color gamut displays. | |
| VHFp1-6L | 3D CG Image Region of Interest Estimation and Visual Attention Based on Saliency Map *Norifumi Kawabata1,2 1. Hokkaido University (Japan), 2. Computational Imaging Lab (Japan) |
| In this paper, we estimated that there is the region of interest (ROI) in which object or background region of 3D CG image from the view of stochastic model for saliency map, and then we evaluated and discussed quantitatively including visual attention. | |
| VHFp1-7 | New Evaluation Index of Ambient Image Quality Considering Reflectance Characteristic of Display *Jinyong Kim1, Sangwon Kim1, Hogil Kang1, Seungki Chae1, Youngseok Choi1 1. LG Display (Korea) |
| The important factors that determine the image quality of a display include black tone, color gamut, and color accuracy. A new evaluation method is introduced that can measure the image quality of a display under a TV viewing environment with external lighting, and provide evaluation results for several displays. |
VHFp2: Display Quality for Automotive Applications
Special Topic of Interest on Automotive Displays
Dec. 15 10:40-12:00 Room 501
| VHFp2-1L | LCD Reflection Model for Simulation of Automotive and Mobile Displays under Daylight Condition *Ramazan Ayasli1, Julian Bürner1, Maxim Schmidt1, Sascha Xu2 1. University of Saarland (Germany), 2. X-Motive GmbH (Germany) |
| Reflection on an LCD degrades visual quality and readability of a display. Extensive measurements show that the reflection depends on the gray-value of a pixel and thus image contents. The reflection model presented in this paper allows simulation of images considering the ambient light and development of proper daylight compensation. |
Workshop on Projection and Large-Area Displays and Their Components
| Dec. 14 | 13:00-14:20 | Room 402 | PRJ1 | Smart Industry and Sensing Technology |
| Dec. 14 | 14:50-15:50 | Room 402 | PRJ2 | Outer Space DX and Applications |
| Dec. 14 | 16:40-18:00 | Room 402 | PRJ3 | Light Sources and Optical Technologies |
| Dec. 15 | 13:00-14:20 | Room 409 | PRJ4/LCT4 | Device and Optical Component |
| Dec. 15 | 14:50-16:10 | Room 409 | PRJ5/3D2 | Automotive Display |
| Dec. 15 | 16:40-18:00 | Room 409 | FMC6/PRJ6 | AR/VR System and Component |
| Dec. 16 | 9:00-10:20 | Room 402 | PRJ7 | Aerial Display & Projection Mapping |
| Dec. 16 | 11:10-12:30 | Room 501 | PRJp1 | Projection Technology |
PRJ1: Smart Industry and Sensing Technology
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 14 13:00-14:20 Room 402
Chair: Satoshi Ouchi (Hitachi)
Co-Chair: Makio Kurashige (DNP)
| PRJ1-1
13:00 |
Invited Upsizing AM Build Capacity: Options and Tradeoffs for Machine Builders *Alfred Jacobsen1, Adam Kunzman2,3, Trond Jorgensen4, Philip Vestlie4 1. Visitech Engineering GmbH (Germany), 2. Keynote Photonics (United States of America), 3. Visitech Americas, Inc. (United States of America), 4. Visitech AS (Norway) |
| Larger print sizes in DLP-based UV-SLA are compromised in pixel resolution, power density and production scalability. Multi-head scrolling projector configurations enable efficient scalable volume production. A Polymer Powder Bed Fusion system based on Visitech's recently introduced DIS technology is presented and properties of 3D-printed parts from this process are presented. | |
| PRJ1-2
13:20 |
Real-time 3D Space Reconstruction for OT Metaverse as Interactive Virtual Site *Keiichi Mitani1, Kazuyuki Tajima1, Yusuke Nakamura1 1. Hitachi Ltd. (Japan) |
| We developed a platform for real-time 3D digitization of a work site and a method for high-quality, fast 3D-geometry modeling are proposed. It was confirmed that the platform works in real time, and the proposed modeling method is 7 times faster and robust than conventional methods. | |
| PRJ1-3
13:40 |
Robust Appearance Manipulation against Changes in the Lighting Environment *Yutaro Okamoto1, Toshiyuki Amano1 1. Wakayama University (Japan) |
| Appearance manipulation systems using model predictive control with projector-camera feedback cause reflectance estimation error when the lighting environment changes. This study proposes a novel reflectance compensation method that enables robust appearance manipulation to changes in the lighting environment. | |
| PRJ1-4L
14:00 |
High-Speed Time-Domain Measurement of Laser Beam Signals from Raster-Scanning RGB Laser Projector *Hiroshi Murata1,2, Takashi Ebara1, Shohei Uomi1, Junichi Kinoshita2, Kazuhisa Yamamoto2 1. Mie University (Japan), 2. Osaka University (Japan) |
| Scanning laser beam signals from raster-scanning RGB projectors were measured in time domain using high-speed photodiodes and a real-time oscilloscope. Temporal signal variations around 1 ns were obtained in each flame at 60 fps. These are useful for characterizing smart laser projectors from both technical and standardization point of views. |
PRJ2: Outer Space DX and Applications
Dec. 14 14:50-15:50 Room 402
Chair: Muneharu Kuwata (Mitsubishi Elec.)
Co-Chair: Toshiyuki Amano (Wakayama Univ.)
| PRJ2-1
14:50 |
Invited JAXA Earth API for Python : Open-Source API for Efficient and Effective Satellite Data Distribution *Yoshinobu Sasaki1, Kohei Kawamura1, Goh Segami1, Kei Oyoshi1 1. Japan Aerospace Exploration Agency (Japan) |
| Specifications of earth observation images differ among satellites, sensors, and distribution systems, so the cross-sectional use of the data is still difficult. Therefore, we are developing the prototype of satellite data distribution API, “JAXA Earth API for Python”, which enables us to use JAXA's multiple satellite data immediately and intuitively. | |
| PRJ2-2
15:10 |
Invited Japanese Lunar Lander SLIM and Its Optical Navigation for Pinpoint Landing *Seisuke Fukuda1, Takayuki Ishida1 1. Japan Aerospace Exploration Agency (JAXA) (Japan) |
| SLIM (Small Lander for Investigating Moon) is Japanese small spacecraft for demonstration of lunar pinpoint landing technology. SLIM aims at achieving accurate navigation to a specific landing point on the moon using innovative optical navigation technology. | |
| PRJ2-3
15:30 |
Invited A New Planetarium Harmonized with Natural Starry Sky *Chisato Yamauchi1, Toshiyuki Amano2, Masami Okyudo2 1. Kimino-cho Misato Astronomical Observatory (Japan), 2. Wakayama University (Japan) |
| This may be a new attempt in astrotourism and astronomical education. We project the starry sky on the ground at Misato astronomical observatory where we can see the beautiful natural starry sky. When tourists look at them from a tower veranda in our observatory, they can know that they live in the universe with spatial cognition. |
PRJ3: Light Sources and Optical Technologies
Dec. 14 16:40-18:00 Room 402
Chair: Hidekazu Hatanaka (Ushio)
Co-Chair: Juiwei Pan (National Chiao Tung Univ.)
| PRJ3-1
16:40 |
Invited Latest Progress of High-Efficient Blue and Green VCSELs with Curved Mirror *Maiko Ito1, Tatsushi Hamaguchi1, Tomohiro Makino1, Kentaro Hayashi1, Jared A. Kearns1, Maho Ohara1, Noriko Kobayashi1, Shoetsu Nagane1, Koichi Sato1, Yuki Nakamura1, Yukio Hoshina1, Tatsurou Jyoukawa1, Takumi Watanabe1, Yuichiro Kikuchi1, Seiji Kasahara1, Susumu Kusanagi1, Yuya Kanitani1, Eiji Nakayama1, Rintaro Koda1, Noriyuki Futagawa1 1. Sony Group Corporation (Japan) |
| Highly efficient GaN-VCSELs with curved mirrors were obtained. The peak WPE and output power were 13.4 % and 7.6 mW. This talk also review the latest progress of the green VCSELs. | |
| PRJ3-2
17:00 |
Comparison Reproducibility of Measured and Calculated Color Speckle Distributions in CIE xyY Color Space *Junichi Kinoshita1, Kazuhisa Yamamoto1, Kazuo Kuroda1 1. Osaka University (Japan) |
| Measured and calculated color speckle distributions were compared in the xyYnorm color space for two different RGB laser sources. The three different datasets were extracted for ensuring reproducibility of the comparisons. The triangular-shape trend of the measured distributions affected by the scale factors of RGB speckle grains was confirmed. | |
| PRJ3-3L
17:20 |
Depth-Expansion of Light-Field Head-Mounted Display Using a Lens Array with Two Focal Lengths *Yasutaka Maeda1, Daiichi Koide1, Hisayuki Sasaki1, Takuya Handa1, Kensuke Hisatomi1 1. NHK (Japan) |
| Light-field head-mounted displays show three-dimensional (3D) images; however, the quality of the 3D images with depth is degraded by the defocus blur of rays. We propose a method to extend the depth of field using a lens array, consisting of lenses with different focal lengths in a checkerboard pattern. | |
| PRJ3-4L
17:40 |
Development of a Video Projection System using Multiple Projectors on a Directional Volumetric Display *Moeka Abe1, Naoto Hoshikawa2, Hirotaka Nakayama3, Tomoyoshi Ito1, Atsushi Shiraki1 1. Chiba University (Japan), 2. National Institute of Technology,Oyama College (Japan), 3. National Astronomical Observatory of Japan (Japan) |
| Projecting a video from multiple projectors onto a directional volumetric display by applying threads and projectors necessitates that the display timing of the projected video is synchronized among the projectors. As a result, synchronous video projection was achieved in this study by synchronizing the projectors utilizing user datagram protocol communication. |
PRJ4/LCT4: Device and Optical Component
Dec. 15 13:00-14:20 Room 409
Chair: Cuypers Dieter (Ghent Univ., CMST)
Co-Chair: Hiroyuki Yoshida (Osaka Univ.)
| PRJ4/LCT4-1
13:00 |
Invited Adaptive Beam-Steering LiDAR using a Liquid-Crystal Integrated Optical Phased Array *Kazuki Nakamura1, Kenji Narumi1, Kohei Kikuchi1, Yumiko Kato1, Akira Hashiya1, Takaiki Nomura1, Masahiko Tsukuda1, Yoshiki Sasaki1, Kazuya Hisada1, Yasuhisa Inada1 1. Panasonic Holdings Corp. (Japan) |
| We have developed an adaptive beam-steering LiDAR using a liquid-crystal tunable on-chip beam-steering device. 3D target tracking is demonstrated by aiming the beam at objects detected with a camera. | |
| PRJ4/LCT4-2
13:20 |
Adaptive Liquid Crystal Lenses for AR/VR *Dieter Cuypers1, Herbert De Smet1 1. imec / Ghent University (Belgium) |
| Augmented and Virtual Reality systems have complex optical architectures. In many of these, adaptive lenses are used or are envisaged to be used to improve image perception quality. The use of tunable liquid crystal lenses in these systems is discussed. | |
| PRJ4/LCT4-3
13:40 |
A Low Speckle Laser Pico-Projector with Dynamic Light Scattering Liquid Crystal Devices *Guan Chih Chen1, Yong Han Chen1, Jui Wen Pan1, Shie Chang Jeng1 1. National Yang Ming Chiao Tung University (Taiwan) |
| Dynamic light scattering liquid crystal (DLS-LC) device with a low driving field is used to reduce the speckle in the laser pico-projector. The DLS-LC device produces the time-varying scattering patterns, which can eliminate the degrees of temporal and spatial coherences of the laser and achieve a very effective reduction in the speckle contrast. | |
| PRJ4/LCT4-4L
14:00 |
Invited Transmissive Compact Spatial Polarization Converter to Generate Polarization Distribution with Arbitrary Phase and Polarization on a Poincaré Sphere *Keisuke Yoshiki1, Takeshi Yamamoto2 1. Univ. of Hyogo (Japan), 2. Oasa Electronics Co.,Ltd (Japan) |
| We have developed a transmissive optical modulator with arbitrary control of polarization and phase. The phase control range exceeds 6π, and the polarization is fully controllable on Poincaré sphere. The installation is completed by simply inserting the device into the optical path of an existing optical device. This paper describes its principle, performance, and potential application to high power lasers. |
PRJ5/3D2: Automotive Display
Special Topic of Interest on Automotive Displays
Dec. 15 14:50-16:10 Room 409
Chair: Kazuhiro Ohara (Keynote Photonics)
Co-Chair: Haruki Mizushina (Tokushima Univ.)
| PRJ5/3D2-1
14:50 |
Invited Nanoparticles for High-Luminance Light-Emitting Diodes for Efficient Automotive Systems *Juan J Santaella1, Salvador Rodríguez-Bolívar2, Lucía Puga-Pedregosa1, Alberto González-Rico1, María Marín-González1, Francisco M Gómez-Campos2 1. Valeo Lighting Systems (Spain), 2. Universidad de Granada (Spain) |
| The automotive industry is undergoing some technological revolutions that are shaping the greatest ever upheaval in transportation. These forces are giving rise to three disruptive technological trends: electrification, autonomous vehicles, and digital mobility. In the frame of these revolutions, quantum dots (QDs) might challenge the current lighting emitting diode (LED). | |
| PRJ5/3D2-2
15:10 |
A Measurement-based Active Distortion Compensation for 3D Head-Up-Display *Akinori Sato1, Ayuki Hayashishita1, Kaoru Kusafuka1 1. Kyocera corporation (Japan) |
| Since automotive HUD has a display distortion changing depending on eye position, a 2D HUD has a problem of binocular disparity caused by the difference in distortion between the right and left eye positions. Using a parallax barrier 3D HUD with eye tracking, we show that the above problem can be solved by performing proper 3D image composition and distortion compensation according to each of the... | |
| PRJ5/3D2-3
15:30 |
Change in Long-Range Pop-up Distance of Arc 3D Display Due to Substrate Installation Angle *Hiroto Oishi1, Masaki Yasugi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| We clarified the long-range pop-up distance to almost half of observation distance in front of the substrate of arc 3D display. Simulation of the pop-up distance by changing the angle of substrate installation leads that the pop-up distance increases as the substrate is shifted closer to the perpendicular of ground. | |
| PRJ5/3D2-4
15:50 |
Factors and Countermeasures for 3D Image Sickness in 3D Head-up Display *Kazumasa Matsuda1, KAORU KUSAFUKA1 1. KYOCERA Corporation (Japan) |
| The parallax barrier type 3D-HUD virtual image display uses binocular disparity to recognize the 3D images, but due to the inconsistency between congestion and adjustment, 3D image sickness is likely to occur due to the relationship between the crosstalk ratio of the 3D virtual image and the amount of parallax. By clarifying the relationship between above factors quantitatively, the conditions for reducing 3D image sickness are calculated. |
FMC6/PRJ6: AR/VR System and Component
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 15 16:40-18:00 Room 409
Chair: Hirotsugu Yamamoto (Utsunomiya Univ.)
Co-Chair: Osamu Akimoto (Sony Semiconductor Solutions)
| FMC6/PRJ6-1
16:40 |
Invited The Quantum Light Chip Technology *Ioannis Pitsios1, Jonas Zeuner1, Chiara Greganti1 1. VitreaLab GmbH (Austria) |
| The Quantum Light Chip is a light source that emits a dense array of laser beams from within a thin piece of glass, offering precisely controllable illumination properties, that can fundamentally change what is possible with current display technology, accelerating the development of the Augmented Reality (AR), Virtual Reality (VR) and 3D displays. | |
| FMC6/PRJ6-2
17:00 |
Proposal of Ultra-thin AR Wearable Display Film Using Liquid Crystal Waveguide *Takao Tomono1, Rumiko Yamaguchi2 1. Toppan Inc (Japan), 2. Akita University (Japan) |
| We propose an ultra-thin AR display film (<1mm) using a liquid crystal waveguide. The principle is to outgoing light from waveguide by changing the refractive index of the clad when voltage is applied. The device does not cause fatigue in the eye because of direct projection system onto the retina. | |
| FMC6/PRJ6-3L
17:20 |
Invited Application of Polarization Volume Holographic Grating in New Display Technologies *Yuning ZHANG1 1. Southeast University (China) |
| Near-eye holographic diffractive waveguide display using novel polarized volume holographic gratings (PVG) have lately gotten a lot of interest. Here, we briefly introduced the fundamental concepts of PVG before sharing our work progress on PVG, which included procedure, imaging simulation, and experimental results. Simultaneously, these prospective PVG-based application directions were also discussed. | |
| FMC6/PRJ6-4L
17:40 |
Effect of the Diameter of Transparent Spheres Introduced in AIRR Optical System on the Modulation Transfer Function *Kazuaki Takiyama1, Kengo Fujii1, Masaki Yasugi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| The use of a large diameter transparent sphere in AIRR (aerial imaging by retro-reflection) optics, which is a conjugate arrangement of two transparent spheres, was found to improve the modulation transfer function (MTF) of the lens resolution increase by the aperture of the ball lens. |
PRJ7: Aerial Display & Projection Mapping
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 16 9:00-10:20 Room 402
Chair: Tetsuji Suzuki (JVC KENWOOD)
Co-Chair: Yoshihiro Watanabe (Tokyo Tech)
| PRJ7-1
9:00 |
Invited Aerial Displays Based on Dynamic Projection Mapping on Drones *Hiromasa Oku1, Masatoshi Iuchi1 1. Gunma University (Japan) |
| Recently, aerial display technologies have fascinated people. Dynamic projection mapping on drones is one way to achieve such aerial displays. In this paper, methods to achieve dynamic projection mapping on a flying screen by drones using high-speed optical gaze controller are introduced. | |
| PRJ7-2
9:20 |
Invited T-Glasses: Light-Weight High Efficient Augmented Reality Smart Glasses *Soon-gi Park1, Kiman Kim1, Jeonghun Ha1 1. LetinAR (Korea) |
| LetinAR's T-Glasses are optical see-through augmented reality glasses that use PinMR (pin mirror) and PinTILT (pin mirror total internal reflection minimized lightguide technology) method. With those advanced technologies, lightweight and glasses-like form factor can be achieved with plastic injection molded waveguide. | |
| PRJ7-3
9:40 |
Evaluation of Response Time of AIRR with Immersive Aerial Interface by 3D Motion Capture *Mayu Adachi1, Kosuke Inoue1, Masaki Yasugi1, Nao Ninomiya1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| The response time of immersive aerial interface was measured using a high-speed video camera. We have successfully reduced the time to almost enough level of 15 milliseconds. The delay time was within the range that the VR sickness may be suppressed. | |
| PRJ7-4L
10:00 |
Invited Volume Holographic Optical Element Used for Light Coupling in XR's Near-Eye Glass *Ching-Cherng Sun1 1. NATIONAL CENTRAL UNIVERSITY (Taiwan) |
| Volume holographic optical element used for light coupling in XR's near-eye glass |
PRJp1: Projection Technology
Special Topic of Interest on Automotive Displays
Dec. 16 11:10-12:30 Room 501
| PRJp1-1L | Vehicle Head-Up Display based on Holographic Combiner and Projection Lens Design *Xiao-Ching Lin1, Wen-Kai Lin1,2, Shao-Kui Zhou1,2, Wei-Chia Su1 1. National Changhua University of Education (Taiwan), 2. National Yang Ming Chiao Tung University (Taiwan) |
| In this study HUD system which is composed of holographic combiner and the designed projection lens is proposed. Among, the exit pupil of the projection lens close to In-coupling HOE to get the large FOV. The HUD system FOV can reach 11.09°×5.03° (H×V). |
Workshop on Electronic Paper and Nonvolatile Displays
| Dec. 14 | 16:40-18:00 | Room 504 | EP1 | Electrophoretic and Electrowetting Displays |
| Dec. 15 | 10:20-11:40 | Room 504 | EP2 | Materials and Analytical Methods for Nonvolatile Displays |
| Dec. 15 | 13:00-14:20 | Room 504 | EP3 | Electrochromic Displays |
| Dec. 15 | 17:00-18:20 | Room 501 | EPp1 | Electronic Paper and Nonvolatile Display Technologies |
EP1: Electrophoretic and Electrowetting Displays
Dec. 14 16:40-18:00 Room 504
Chair: Keisuke Hashimoto (E Ink Holdings)
Co-Chair: Toru Fujisawa (DIC)
| EP1-1
16:40 |
Invited A Five-Color Electrophoretic Display *HongMei Zang1, Craig Lin1, Muhanad Jalil1, Haiyan Gu1, Yajuan Chen1 1. E Ink California, LLC. (United States of America) |
| The unveiling of the four-particle electrophoretic display, Spectra 3100 led to the development of an additional orange color using the same image film. A bright orange can be generated by mixing yellow and red particles through an advanced driving algorithm and demonstrated excellent color consistency from 0°C to 40°C. | |
| EP1-2
17:00 |
Invited Multipigment Full-color Electrophoretic Display with Improved Update Time *Stephen James Telfer1, Kenneth R Crounse1, Hui Du1, Samir Kumar1, Jonathan L Zalesky1, Edzer Huitema1 1. E Ink Corporation (United States of America) |
| A new four-pigment electrophoretic display has been developed, delivering a color gamut volume of >10,000 dE3 without a front light and >40,000 dE3 when front-lit in an update time of 500ms. This order-of-magnitude speed improvement over prior multipigment displays enables full-color e-reader devices to be made without color filters. | |
| EP1-3
17:20 |
Invited Switching Dynamics of Electrowetting Pixels *Alex Henzen1,2,3 1. South China Academy of Advanced Optoelectronics -South China Normal University (China), 2. Liquid Light Ltd. (China), 3. GR8 optoelectronics (Hong Kong) |
| While greyscale switching of an LCD can be described as a continuous process, electrowetting pixels can display various modes of opening dependent on the voltage transition profile. Careful control of switching field and slew rate are needed to ensure reproducible greyscale reproduction. | |
| EP1-4L
17:40 |
Invited Realization of Full Color Electrowetting Displays for Digital Out of Home Applications *Doeke Oostra1, Rajan Van Aar1, Johan Marra1, Pieter Van der Valk1, Hans Feil1 1. Etulipa (Netherlands) |
| Digital out-of-home displays are a very attractive medium for communicating with the public. LED displays have found many applications in this regard, but wide usage of LED displays is hampered due to their light pollution and power consumption. This drawback creates a unique opportunity for reflective digital displays. Etulipa has developed full-color reflective electrowetting matrix displays which are now undergoing field tests. The displays have deep-saturated... |
EP2: Materials and Analytical Methods for Nonvolatile Displays
Dec. 15 10:20-11:40 Room 504
Chair: Shuichi Maeda (Tokai Univ.)
Co-Chair: Norihisa Kobayashi (Chiba Univ.)
| EP2-1
10:20 |
Invited Chemical Resistant Silver Nanowire/Cellulose Nanofibril Flexible Transparent Conductive Film *Ying-Chih Liao1,2, Jia-Sheng Tang1, Cheng-Ying Lee1, Hsuan-Chin Lu1 1. National Taiwan University (Taiwan), 2. Advanced Research Center of Green Materials Science & Technology (Taiwan) |
| In this research, a simple coating method was developed to produce a chemical-resistant transparent conductive thin film. Ultrasonicated CNF, as a binder, is mixed with Silver nanowires to provide a stable coating fluid. The mixture was coated on a flexible plastic substrate by a one-step blade coating procedure. As a result, the coating not only shows low sheet resistance of 11.7 Ω/square, great transparency of 91.48%... | |
| EP2-2
10:40 |
Application of Dark-Field Microscopy to the Coloration Mechanism Analysis of Ag Deposition-Based Electrochromic Device *Shun Uji1, Kazuki Nakamura1, Norihisa Kobayashi1 1. Chiba University (Japan) |
| We have studied Ag deposition-based electrochromic (EC) device that can represent various optical states. In this study, dark-field microscopy (DFM) was applied to in situ observation of localized surface plasmon resonance (LSPR) of Ag electrodeposits. Light scattering spectra obtained DFM provided detailed information on the LSPR. | |
| EP2-3L
11:00 |
Invited Invisible Digital Image by Thin-film Interference of Nb2O5 using its Periodic Repeatability *Shuichi Maeda1, Akihiro Fukami1, Kaiki Yamazaki1 1. Tokai University (Japan) |
| We have succeeded in making an invisible digital image on a metal substrate using periodic repeatability by thin-film interference of niobium oxides. Although this digital information is invisible in the visible light range, but detectable in the infrared light range. This technology has a potential to be applied to anti-counterfeiting. | |
| EP2-4L
11:20 |
Influence of Capping Agent on Reflectivity of Silver Electrodeposition Based Type Electrochromic Device *Hao Wang1, Takanori Sugita1, Shunsuke Kimura1, Kazuki Nakamura1, Norihisa Kobayashi1 1. Chiba university (Japan) |
| The novel Electrochromic system that utilizing electrodeposition of silver can express various optical properties such as mirror, black, and transparent in a single device. It is expected to be used as an advanced reflective electrochromic display. In this research, the citric acid was added to the electrolyte of the device as an capping agent to simply enhance the reflectance of the EC device. |
EP3: Electrochromic Displays
Dec. 15 13:00-14:20 Room 504
Chair: Masayoshi Higuchi (NIMS)
Co-Chair: Yasuo Toko (Stanley Elec.)
| EP3-1
13:00 |
Invited Chromatic Color Representation in Silver Deposition Based Electrochromic Cell toward Color Reflective Display *Norihisa Kobayashi1 1. Chiba University (Japan) |
| We reported Ag deposition-based electrochromic cell (ECD) which showed reversible color change from transparent to chromatic color, black and silver-mirror in a single device. This coloration is based on the absorption by localized surface plasmon resonance (LSPR) enhanced by the silver nano deposit. In this paper, we review a relationship between optical properties, deposition process and morphology of silver nanoparticles toward color reflective display. | |
| EP3-2
13:20 |
Invited Co-based Metal-Organic Nanostructures for Vis-to-NIR Electrochromic Display *Chanchal Chakraborty1, Sayan Halder1 1. Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, India (India) |
| Vis-to-NIR electrochromism is highly demanding as it can regulate solar irradiation by blocking the NIR lights to control indoor cooling. In this regard, the Co (II)-based different dimensional metal-organic nanostructures are developed to exhibit the Vis-to-NIR electrochromism when used as electrochromic (EC) displays, and their EC parameters are thoroughly compared. | |
| EP3-3
13:40 |
Electrochromic Composites of Metallo-supramolecular Polymers and a Layered Inorganic-organic Covalently Bonded Hybrid *Kazuko Fujii1, Manas Kumar Bera1, Dines Chandra Santra1, Takatsugu Wakahara1, Ritsuko Nagahata2, Masayoshi Higuchi1 1. National Institute for Materials Science (Japan), 2. National Institute for Advanced Industrial Science and Technology (Japan) |
| Metallo-supramolecular polymer (MSP), composed of metal ions and multi-topic organic ligands, is known as a good electrochromic (EC) material. To improve EC properties, we prepared composites of MSPs and a layered inorganic-imidazoline covalently bonded hybrid (LIIm) by simply mixing them and examined effects of LIIm on the EC properties. | |
| EP3-4L
14:00 |
Coloration Properties of the Electrochromic Device with Hybrid Capacitor Architecture Effected by Electrolyte Composition *Maiko Tozawa1, Kazuki Nakamura1, Norihisa Kobayashi1 1. Chiba University (Japan) |
| We have already reported a novel multicolor electrochromic (EC) device by introducing a porous counter electrode having high capacitance. In this paper, we investigated the effect of electrolyte species on electric double layer capacitance and coloration properties of the EC device. |
EPp1: Electronic Paper and Nonvolatile Display Technologies
Dec. 15 17:00-18:20 Room 501
| EPp1-1 | Electron-deficient Anthraquinone-diimines Based Metallosupramolecular Polymers for Electrochromic Study *DINES CHANDRA SANTRA1, Masayoshi HIGUCHI1 1. National Institute for Materials Science (NIMS), NAMIKI, TSUKUBA (Japan) |
| The redox active anthraquinone diimines-terpyridine base metallosupramolecular polymers (MSPs) were synthesized from amine and 9,10-anthraquinone, respectively. The electrochemistry and electrochromic properties of these polymers were investigated. The spin-coating of polymer films exhibited reversible electrochemical processes and strong color changes upon electro-oxidation or electro-reduction. The remarkable electrochromic behavior of the film was clearly interpreted from spectroelectrochromic study and stability was evaluated by the electrochromic cyclic switching studies. | |
| EPp1-2L | Conducting Polypyrrole-ITO Particles toward Display Elements for Electronic Paper *Yukihiro Tsugita1, Kaiki Noma1, Shuichi Maeda1 1. Tokai University (Japan) |
| We have prepared conducting nanocomposite particles which consist of polypyrrole and ITO. The conductivity of the polypyrrole-ITO nanocomposite particles was the same as that of polypyrrole. We confirmed that the nanocomposites have potential to be utilized as particles for electronic paper due to their high conductivities and colloid stabilities. | |
| EPp1-3L | Conducting Paper Sheet Made of Polypyrrole, Pulp Fiber and Cellulose Nanofiber toward Electrodes for Electronic Paper *Ryo Aoki1, Chiharu Kamataki1, Shuichi Maeda1 1. Tokai university (Japan) |
| We have prepared conducting paper sheets made of polypyrrole, pulp fiber and cellulose nanofiber that utilize polypyrrole as conducting parts and pulp/cellulose nanofibers as flexible part. The sheets have a potential that can be utilized as back electrodes for electronic paper. |
Workshop on MEMS and Emerging Technologies for Future Displays and Devices
| Dec. 14 | 13:00-14:20 | Room 502 | MEET1 | Novel Materials, Fundamental Components and Process Technologies |
| Dec. 14 | 14:50-16:10 | Room 502 | MEET2 | Micro/NanoDisplays and Nanotechnology Application (1) |
| Dec. 14 | 16:40-17:40 | Room 502 | MEET3 | Micro/NanoDisplays and Nanotechnology Application (2) |
| Dec. 15 | 10:20-11:40 | Room 502 | MEET4 | Micro/NanoDisplays and Nanotechnology Application (3) |
| Dec. 15 | 13:00-14:20 | Room 502 | MEET5 | EL Quantum Dots Technologies |
| Dec. 15 | 14:50-16:10 | Room 502 | MEET6 | Emerging Quantum Dots and Nanotechnologies (1) |
| Dec. 15 | 16:40-18:00 | Room 502 | MEET7 | Emerging Quantum Dots and Nanotechnologies (2) |
| Dec. 16 | 9:00-10:00 | Room 502 | MEET8 | Micro/NanoDisplays and Nanotechnology Application (4) |
| Dec. 16 | 10:50-11:30 | Room 502 | MEET9 | Micro/NanoDisplays and Nanotechnology Application (5) |
| Dec. 16 | 13:30-14:30 | Room 502 | MEET10 | Micro/NanoDisplays and Nanotechnology Application (6) |
| Dec. 15 | 10:40-12:00 | Room 501 | MEETp1 | Micro/NanoDisplays: Novel Materials, Components and Process Technologies |
MEET1: Novel Materials, Fundamental Components and Process Technologies
Dec. 14 13:00-14:20 Room 502
Chair: Nag Patibandla (Applied Materials, Inc)
Co-Chair: JangHyuk Kwon (KyungHee Univ.)
| MEET1-1
13:00 |
Invited Developing a Platform for Creating Waveguide Combiners for AR Headsets and Meta Surface-Based Optics *Robert Jan Visser1, Ludovic Godet1, Rutger Meyer Timmerman Thijssen1, Jinxin Fu1, Rami Hourani1, Sage Doshay1 1. Applied Materials, Inc. (United States of America) |
| AR and VR will enable new ubiquitous platforms for communicating, learning, and computing. Waveguide combiners are essential for transporting, expanding, and faithfully rendering images from the display onto AR glasses. We describe the new materials and techniques Applied Materials is using to create these and other nanostructured optical devices. | |
| MEET1-2
13:20 |
Invited EUV Lighting with C-Beam Irradiation Technique for Ultra-High-Resolution Devices *Kyu Chang Park1, Sung Tae Yoo1 1. Kyung Hee University (Korea) |
| High-resolution lithography is required for ultra-high-resolution pixel of next-generation display devices. For high-resolution lithography, EUV lighting, a lighting technology using carbon nanotube (CNT)-based cold cathode electron beam (C-beam), was studied. In addition, the possibility of high-resolution lithography was confirmed by using polymethyl methacrylate (PMMA) as a photoresist. | |
| MEET1-3
13:40 |
Invited The Pixel Circuit Compensating for Strain Effect and Threshold Voltage Variation in Stretchable Display Jimin Kang1, *Soo-Yeon Lee1 1. Seoul National University (Korea) |
| The stretchable display pixel circuits, which compensate for strain and the threshold voltage variation, have been proposed. The capacitive-type strain sensor is exploited to detect and compensate for the luminance reduction caused by stretching. The simulation results show that the proposed circuits have excellent compensation ability when the strain is applied. | |
| MEET1-4
14:00 |
Invited Nanoscale Semiconductor Devices Fabricated using Adhesion Lithography at Low Cost *Gwenhivir Wyatt-Moon1, Oliver J Burton1, Stephan Hofmann1, Andrew J Flewitt1 1. University of Cambridge (UK) |
| As device features sizes decrease typically fabrication costs increase. By combining adhesion lithography, a fabrication technique to create nanodevices with bottom-up nanomaterial growth this manufacturing rule has been broken. Not only is the fabrication cheaper but there is a decrease in material wastage as compared to traditional top-down fabrication processes |
MEET2: Micro/NanoDisplays and Nanotechnology Application (1)
Special Topic of Interest on Micro/Mini LEDs
Dec. 14 14:50-16:10 Room 502
Chair: Zhaojun Liu (Southern Univ. of S&T)
Co-Chair: JangHyuk Kwon (KyungHee Univ.)
| MEET2-1
14:50 |
Invited Low Temperature Ferroelectric Oxide TFTs for Display Application *Jin Jang1, Mehedi Hasan1, Samiran Roy1 1. Kyung Hee University (Korea) |
| We report ZnO and IGZO TFTs with low temperature ferroelectric gate insulator for flexible display application. With HfZrO and ZrOx showing ferroelectric properties have been used for ZnO and IGZO TFTs. In this talk we will focus on how to make ferroelectric materials at low temperatures for flexible AMOLED displays. | |
| MEET2-2
15:10 |
Invited MicroLED Display Design for Manufacturability *Khaled Ahmed1 1. Intel Corporation (United States of America) |
| MicroLED display color (luminance) uniformity targets require tight control on the variability of several MicroLED parameters. Here, numerical analysis is used to estimate acceptable variability targets for these parameters. The role of MicroLED chip/wafer sizes are delineated. Published variability data is scarce but wavelength variability data is promising. | |
| MEET2-3
15:30 |
Invited Technological Advancements and Manufacturing Readiness of Micro-LED Displays *Nag Patibandla1, Mingwei Zhu1, Hou T Ng1, Sivapackia Ganapathiappan1, Zhiyong Li1 1. Applied Materials, Inc. (United States of America) |
| In spite of the performance advantages such as high-brightness, higher efficiency, longer lifetime, broader color gamut, superior resolution; micro-LED-based front plane technology is lagging in cost-effective manufacturing scalability. Applied Materials is taking an approach to develop micro-LED display technology that is suitable to address both direct-view (wearable to wall-hanging) and near-eye (AR/VR) applications. This innovative approach uses high efficiency UV µLEDs, active matrix TFT backplanes... | |
| MEET2-4
15:50 |
Invited Metal-assisted Direct Growth of CVD Graphene on GaN as Transparent Electrodes Penghao Tang1, Fangzhu Xiong1, Zaifa Du1, Kai Li1, Yu Mei1, Weiling Guo1, Qun Yan2, *Jie Sun1,2 1. Beijing University of Technology (China), 2. Fuzhou University (China) |
| This paper reports a metal assisted process for the direct growth of CVD graphene on GaN LED epiwafers. The metal layer was introduced as both the mask and catalyst, which was subsequently removed in a penetration etching process. This provides a solution for the integration of graphene and GaN devices. |
MEET3: Micro/NanoDisplays and Nanotechnology Application (2)
Special Topic of Interest on Micro/Mini LEDs
Dec. 14 16:40-17:40 Room 502
Chair: Jin Jang (Kyung Hee Univ.)
Co-Chair: Chien-chung Lin (Nat. Taiwan Univ.)
| MEET3-1
16:40 |
Invited Challenges and Solutions for the Fabrication of CMOS-driven Microled Displays *Francois Templier1, Christophe Dubarry1 1. CEA LETI (France) |
| In this paper MicroLED and CMOS integration technologies are reviewed, from classical flip-chip to fully monolithic. These technologies address different challenges. MicroLED and CMOS integration technologies can be leveraged to fabricate microLED displays of all sizes and types, from AR/MR microdisplays to smartphone, TV displays and outdoor panels | |
| MEET3-2
17:00 |
Invited High Performance Micrometer Size LEDs on 8" Si Wafers *Ivan-Christophe Robin1, Yoann Malier1, Romain Cipro1, Zaiyuan Ren1, Pierre Tchoulfian1, Philippe Gilet1 1. ALEDIA SAS (France) |
| One of the microLED display major challenge is to find ways of dropping cost drastically, for instance, in reducing as much as possible, microLED size. Usually, planar LED efficiency drop with chip sizing-down however Aledia has developed µm size microLEDs that show outstanding efficiency allowing cost competitive and energy efficient direct-view displays. We present GaN-on-Si LED technology made on standard 8” Si wafers, scalable... | |
| MEET3-3
17:20 |
Invited Trends toward Integrated RGB Microsystems for Mini and MicroLEDs *Eric Virey1, Zine Bouhamri1 1. Yole Intelligence (United States of America) |
| MicroLEDs promise new generations of displays with improved performance in brightness, energy efficiency contrast, color gamut etc. Yet, despite all its promises, the adoption of microLED technologies remains anecdotal. This paper will discuss how integrated microLED microsystem (chiplets) could accelerate adoption by reducing assembly, testing and yield management costs while improving performance. |
MEET4: Micro/NanoDisplays and Nanotechnology Application (3)
Special Topic of Interest on Micro/Mini LEDs
Dec. 15 10:20-11:40 Room 502
Chair: Kyu Chang Park (KyungHee Univ.)
Co-Chair: Heesun Yang (Hongik Univ.)
| MEET4-1
10:20 |
Invited Improvement of MicroLED Efficiency Through Optimization of Electrode Area and Device Geometry *Ioannis Kymissis1,2, Vincent Lee2, Gen Lauer2 1. Columbia University (United States of America), 2. Lumiode, Inc (United States of America) |
| In all microLED display configurations (transparent displays, large-format mass-transfer displays, and microdisplays) there is a strong interest in the isolation of the emissive area. This work will introduce several strategies (including ion implantation and bias control) for achieving small LED active areas while retaining high device efficiency. | |
| MEET4-2
10:40 |
Invited Size matters: Why nanowire Micro-LEDs are the Choice of Next-Generation Mobile Displays and Virtual Reality Ayush Pandey1, Yakshita Malhotra1, Maddaka Reddeppa1, Yixin Xiao1, Yuanpeng Wu1, Ping Wang1, Xianhe Liu1, Jungwook Min1, Yi Sun1, *Zetian Mi1 1. University of Michigan (United States of America) |
| We report on the demonstration of high efficiency InGaN nanowire-based micro and nanoscale LEDs. The emission wavelengths can be controllably tuned in the visible spectrum by varying the nanowire dimensions. We further show that, by optimizing the nanowire dimensions, micro-LEDs with ultrahigh efficiency and highly directional emission can be achieved. | |
| MEET4-3
11:00 |
Invited High Throughput Elastomer Stamp Mass Transfer for High Performance Displays *Christopher Bower1, Ben Keller1, Andrew Pearson1, Brook Raymond1, Tiffany Weeks1, David Kneeburg1, Carl Prevatte1, Matthew A. Meitl1 1. X Display Company (United States of America) |
| Efforts to develop microLED displays brought visibility to the importance of mass transfer. Processes compatible with high-volume manufacturing that rapidly integrate billions of micron-scale devices are required for making microLED displays. Device assembly throughput greater than 200M units per hour is demonstrated using a 750 × 750 device array stamp and a ten second stamping cycle time. | |
| MEET4-4
11:20 |
Invited Towards Minimizing Customization in Micro-LED Fabrication; A Mass Transfer Process Perspective *Makarem Hussein1 1. LuxNour Technologies (United States of America) |
| We investigate how the requirements for mass transfer techniques influence the fabrication of μ-LEDs. Deterministic mass transfer technologies based on electrostatic and elastomeric stamps and laser-enabled are examined along with the recently introduced pattern-sensitive electromagnetic head (PSH) stamp. |
MEET5: EL Quantum Dots Technologies
Special Topic of Interest on Quantum Dot Technologies
Dec. 15 13:00-14:20 Room 502
Chair: Yeogeon Yoon (Samsung Display Co., Ltd.)
Co-Chair: Kyu Chang Park (KyungHee Univ.)
| MEET5-1
13:00 |
Invited Investigation of Optical Losses in Quantum Dot Color-Converting Layers Using Ray-Tracing Model *Peter Palomaki1, Karen Twietmeyer1 1. Palomaki Consulting, LLC (United States of America) |
| Optical modeling (ray-tracing) of a simplified green QD-OLED pixel is used as a tool to identify and explore major loss mechanisms within this system. Modeled variables include QD and scatter loading, thickness, and material optical properties to highlight the impact these changes can have on outputs. | |
| MEET5-2
13:20 |
Invited Highly Efficient Green InP Quantum Dot Light-Emitting Diodes by Enhancing Carrier Injection *Kai Wang1,2, Tianqi Zhang1,2,3, Pai Liu1,2, Fangqing Zhao1,2, Yangzhi Tan1,2, Jiayun Sun1,2, Xiangtian Xiao1,2, Zhaojing Wang1,2, Qingqian Wang1,2, Fankai Zheng1,2, Xiao Wei Sun1,2, Dan Wu4, Guichuan Xing3 1. Southern University of Science and Technology (China), 2. Key Laboratory of Energy Conversion and Storage Technologies (Southern University of Science and Technology) (China), 3. University of Macau (China), 4. Shenzhen Technology University (China) |
| Enhancing carrier injection is essential to indium phosphide (InP) quantum dot light-emitting diodes (QLEDs). Here, we have applied electron transport layer (ETL) with higher electron mobility and introduced a MoO3 electric dipole layer to enhance the carrier injection. The optimized green InP QLED had achieved a 1.7 times EQE enhancement. | |
| MEET5-3
13:40 |
Invited Patterning of Perovskite Quantum Dots Pixels Via In Situ Photopolymerization *Gaoling Yang1, Haizheng Zhong1 1. Beijing Institute of Technology (China) |
| Quantum dot color conversion (QDCC) technology is an important route to realizing full-color Micro-LED. Combining the photopolymerization reaction with the in-situ fabrication of PQDs, this report introduces a technical method for the patterning of PQDs pixels with resolution as high as 2450 PPI via in-situ photopolymerization, which can be used in QDCC based Micro-LED. | |
| MEET5-4
14:00 |
Invited Widely Emission-Tunable Alloyed ZnSeTe Quantum Dots: Blue-to-Red Emitters *Heesun Yang1, Sun-Hyoung Lee1, Dae-Yeon Jo1, Suk-Young Yoon1, Hyun-Min Kim1, Yuri Kim1, Yang-Hee Kim1, Seong Min Park1 1. Hongik University (Korea) |
| Beyond InP quantum dots (QDs) ternary ZnSeTe QDs are emerging as non-Cd visible emitters. Their emissivity is widely tunable from blue to red simply by composition-controlled band gap engineering. We present highly efficient blue, green and red ZnSeTe QDs with relevant core/shell heterostructures and their potentials for QD display devices. |
MEET6: Emerging Quantum Dots and Nanotechnologies (1)
Special Topic of Interest on Quantum Dot Technologies
Dec. 15 14:50-16:10 Room 502
Chair: Dongwook Lee (Hongik Univ.)
Co-Chair: Kyu Chang Park (KyungHee Univ.)
| MEET6-1
14:50 |
Invited Resent Progress of Cd-Free Quantum Dot Electroluminescent Display *Yeo Geon Yoon1, Jin-Gu Kang1, Sehun Kim1, Jaekook Ha1, Changhee Lee1 1. Samsung Display Co. (Korea) |
| Recenty, QD (Quantum Dot) OLED Displays were released in the market with quite outstanding image quality As a result, QD Technologies have attracted great attention in academics and industry, as OLED technologies did. In this paper, it will be discussed recent issues and progresses of the QD Electroluminecent display , about QD materials, devices and inkjet technologies. | |
| MEET6-2
15:10 |
Invited High-Performance Inverted Red InP Quantum Dot Light-Emitting Diodes with a New Electron Transport Layer *Jang Hyuk Kwon1, Nagarjuna Naik Mude1 1. Kyung Hee University (Korea) |
| Here we report high-performance inverted red InP QLEDs using a new KHU-ETL as an interlayer. Our optimized device with QD:DBTA(1wt%) showed a maximum EQE of 11.6% and a lifetime (LT50) of 3800 hrs at 1000 cd/m2. This enhancement is due to improved charge balance and also suppressed interfacial exciton quenching. | |
| MEET6-3
15:30 |
Invited Observation of Exciton Formation and Degradation in Quantum Dot Light-Emitting Diodes Jaeyoul Kim1, Kyunghwan Kim1, Hyunho Lee2, *Jeonghun Kwak1 1. Seoul National University (Korea), 2. Kwangwoon University (Korea) |
| Although the performance of quantum-dot (QD) based light-emitting diodes (QLEDs) has been improved so far, mechanisms related to the dynamics of charges and excitons in the QD layer of QLEDs in electrical operation are still unclear. Here we investigated their dynamics based on time-resolved techniques to reveal the specific mechanisms. | |
| MEET6-4
15:50 |
Invited Ink-Jet Printing and Photolithography of Quantum Dot Patterns for Micro Light-Emitting Diodes Kai-Ling Liang2, Wei-Hung Kuo2, Cheng-Jhih Luo2, Yen-Hsiang Fang2, *Chien-Chung Lin1,2 1. National Taiwan University (Taiwan), 2. Industrial Technology Research Institute (Taiwan) |
| Two types of quantum dots (QDs) patterning methods applied in micro-LED color conversion process are studied. QDs were patterned by ink-jet printing and by photolithography to from QD array respectively, and their photonic properties were measured and compared. |
MEET7: Emerging Quantum Dots and Nanotechnologies (2)
Special Topic of Interest on Quantum Dot Technologies
Dec. 15 16:40-18:00 Room 502
Chair: Chien-chung Lin (Nat. Taiwan Univ.)
Co-Chair: JangHyuk Kwon (KyungHee Univ.)
| MEET7-1
16:40 |
Invited Carbon Dots: The Future of Display and Lighting Applications *George Fern1, Aqeel Khan1, Pufinji Obene2, Oliver Buchan2, Muttulingham Kumaraverl1 1. Brunel University London (UK), 2. Precision Varionic International (UK) |
| We demonstrate the ability to manufacture Carbon Dots Light Emitting Diode (CD-LED) devices using three process layers of all solutions with either conventional or inverted structures for red, green, blue and white emitting devices. This represents the cheapest method of manufacturing the display and lighting panels. | |
| MEET7-2
17:00 |
Invited High Color Gamut Blue Quantum Dot Light Emitting Diodes: Material&Device Optimizations *Yiran Yan1, Zhiwen Nie1, Likuan Zhou1, Wenjun Hou1, Xiaolin Yan1 1. TCL Research (China) |
| A high performing blue QLED device has been developed synergizing high color gamut (yCIE<0.06) colloidal blue QDs and device optimization with balanced charge carriers. To realize high color gamut blue QLEDs, a novel blue QD structure has been designed with enlarged particle dimension. Such improvement could raise the valance band for 0.2 eV, which significantly lowered the hole injection... | |
| MEET7-3
17:20 |
Invited Mechanical Debonding for Flexible Display Production Ha Young Lee1, Chansoo Kim1, Sun Woo Park1, *Dongwook Lee1 1. Hongik University (Korea) |
| The mass production of flexible display currently relies on laser-based liftoff (LLO) process, where bonding between the carrier glass and flexible polyimide (PI) substrate is removed by laser. However, LLO process accompanies degradation at the bottom surface of the PI substrate and is sensitive to particulates. Here, we report a 2D material-based debonding layer for non-laser-based mechanical liftoff process. We demonstrate that debonding force can... | |
| MEET7-4L
17:40 |
Giant Shell Quantum Dots for Color Conversion and as Active Material in QLED *Sören Becker1, Hendrik Schlicke1, Jan Niehaus1 1. Fraunhofer CAN (Germany) |
| We present an automated and up-scaled synthesis of giant-shell QDs (GSQD). For color conversion, these particles will be incorporated in a suitable matrix with high QD content and transferred onto a blue light LED. We will also show results of QLEDs with a thin film of GSQD as active material. |
MEET8: Micro/NanoDisplays and Nanotechnology Application (4)
Special Topic of Interest on Micro/Mini LEDs
Dec. 16 9:00-10:00 Room 502
Chair: Dongwook Lee (Hongik Univ.)
Co-Chair: JangHyuk Kwon (KyungHee Univ.)
| MEET8-1
9:00 |
Invited Progress in Heavy Metal Free NanoLED Development *Christian Ippen1, Jeffrey DaRos1, Igor Coropceanu1, Jeff Yurek1, Yohei Nakanishi2, Takeshi Ishida2, Homer Antoniadis1 1. Nanosys, Inc. (United States of America), 2. Sharp Display Technology Corporation (Japan) |
| Quantum dots based on InP and ZnTeSe are rapidly improving in their electroluminescence performance, which enables their application in nanoLEDs as the ultimate display technology. | |
| MEET8-2
9:20 |
Invited Manufacturing MicroLED Display by PixeLED Solution *Ying-Tsang Liu1, Yu-Hung Lai1, Yun-Li Li1 1. PlayNitride Display Co., Ltd. (Taiwan) |
| MicroLED display is an emerging technology which can be used for all current display applications and new scenarios, such as transparent, seamless tiling, and AR glasses for metaverse. Based on our novel R/G/B novel R/G/B Chip-on-Carrier step, we could improve the transfer yield and process time. | |
| MEET8-3
9:40 |
Invited MicroLEDs Are Reaching Escape Velocity – A Focus On Transfer Processes and Equipment *Zine Bouhamri1, Eric Virey1 1. Yole Intelligence (France) |
| Mass transfer has long been the biggest challenging part for MicroLED.But should it be the case? In this paper we discuss what has been the latest status about mass transfer and where that puts the microLED industry: something is happening, and we explain why, with technology and market explanations. |
MEET9: Micro/NanoDisplays and Nanotechnology Application (5)
Special Topic of Interest on Micro/Mini LEDs
Dec. 16 10:50-11:30 Room 502
Chair: Kyu Chang Park (KyungHee Univ.)
Co-Chair: Dongwook Lee (Hongik Univ.)
| MEET9-1
10:50 |
Invited Case Studies in MicroLED End-to-End Process Control *John C. Robinson1, Bobby Barnett1 1. KLA Corporation (United States of America) |
| MicroLED displays offer many technical benefits, however, cost remains a barrier to wide market acceptance. Improved yield through process control provides a pathway to high volume manufacturability and lower costs. We discuss end-to-end process control and case studies on release etch for microLEDs and metrology of devices after mass transfer. | |
| MEET9-2
11:10 |
Invited Homogeneously Integrated GaN Based Micro-LED Arrays with GaN Transistors Yaying Liu1,2, *Zhaojun Liu1, Kei May Lau2 1. Southern University of Science and Technology (China), 2. Hong Kong University of Science and Technology (Hong Kong) |
| This paper will report the recent progress of GaN-based Micro-LED arrays homogeneously integrated with GaN high electron mobility transistors (HEMTs). The homogeneous integration method offers a feasible way to reduce parasitic effects and to improve the performance of the Micro-LED displays. |
MEET10: Micro/NanoDisplays and Nanotechnology Application (6)
Special Topic of Interest on Micro/Mini LEDs
Dec. 16 13:30-14:30 Room 502
Chair: Soo-Yeon Lee (Seoul National Univ.)
Co-Chair: Dongwook Lee (Hongik Univ.)
| MEET10-1
13:30 |
Invited High-Bandwidth Flexible White Light System for Visible Light Communication *Konthoujam James Singh1, Chang-Ching Tu1, Yu-Ming Huang1, Hao-Chung Kuo1 1. National Yang Ming Chiao Tung University (Taiwan) |
| In this study, we propose a flexible white-light system consisting of blue InGaN/GaN single-quantum-well micro-LEDs on a flexible substrate pumping CsPbBr3 perovskite QD (PQD) paper in nanostructure form and CdSe QD paper for high-speed VLC. The micro-LED and PQD paper achieved a maximum bandwidth of 817 MHz and 229 MHz respectively. The white-light system reached a maximum bandwidth of 95.5 MHz and transmission rate of 150 Mbps. | |
| MEET10-2
13:50 |
Invited Why Micro Printing Is the Future of Large-Area Electronics *Reza Chaji1, Ehsan Fathi1, Afshin Zamani1, Daniel Park1 1. VueReal (Canada) |
| In this talk, the advantage of the micro-printing process for large-area electronics. We will review different approaches to device integration, possible functional devices, and the VueReal solutions to solve the challenges in the field. | |
| MEET10-3
14:10 |
Invited MicroLED Testing and Inspection: Challenges and Emerging Solutions *David Lewis1 1. InZiv (Israel) |
| microLED continues to be a tantalizing option for display manufacturers, due to the many advantages and consumer applications (e.g., AR and VR) that microLED offers. However, the industry continues to struggle with some fundamental problems in testing and inspection. Recent advancements in microLED testing and inspection provide a path forward. |
MEETp1: Micro/NanoDisplays: Novel Materials, Components and Process Technologies
Dec. 15 10:40-12:00 Room 501
| MEETp1-1 | Biaxially Stretchable a-IGZO TFT on PI/PDMS *Byunglib Jung1, Chanju Park1, Jin Jang1 1. Kyung Hee University (Korea) |
| We demonstrate stretchable amorphous indium-gallium-zinc-oxide (a-IGZO) thin-film transistors (TFTs) on polyimide (PI)/polydimethylsiloxane (PDMS). TFTs/PI island on the stretchable PDMS substrate maintain their electrical characteristics even after being stretched up to 20% strain. TFTs on PI/PDMS substrate exhibit robust electrical performances for stretchable devices. | |
| MEETp1-2L | Morphological and Electrochemical Properties of Cobalt-doped Nickel Oxide Thin Films *Keisuke Washo1, Kodai Numata1, Tetsunori Katsura1, Yoshio Abe1, Kyung Ho Kim1 1. Kitami Institute of Technology (Japan) |
| The Morphological and electrochemical properties of undoped and cobalt (Co)-doped nickel oxide (NiO) thin films prepared on indium tin oxide (ITO)-coated glass substrates using a simple sol-gel spin-coating method were investigated. Both samples had compact and dense nanoparticle structures. The incorporation of Co dopant enhanced the electrochemical performance of NiO. | |
| MEETp1-3L | Structural and Morphological Properties of Nanosheet-like Structured Cobalt Hydroxide Films with Annealing Treatment *Kodai Numata1, Yoshio Abe1, Kyung Ho Kim1 1. Kitami Institute of Technology (Japan) |
| Structural and morphological properties of cobalt hydroxide (Co(OH)2) films prepared by a simple wet-chemical method were investigated with various annealing temperatures. The XRD and FTIR results confirmed that nanosheet-like structured Co(OH)2 was synthesized at a temperature of 90 ºC and the phase transition to oxide occurred with annealing treatment. |
Workshop on Display Electronic Systems
| Dec. 14 | 13:00-14:20 | Room 411 | VHF1/DES1 | Image Quality and Analysis |
| Dec. 15 | 13:00-14:20 | Room 402 | DES2/INP3 | Five Senses & Human Augmentation Technology |
| Dec. 15 | 14:50-16:10 | Room 402 | INP4/DES3 | AR/VR Interactive Technologies (2) Five Senses and Cross-Modal Technology |
| Dec. 15 | 16:40-18:00 | Room 413 | DES4 | Micro LED Driving |
| Dec. 16 | 10:50-12:10 | Room 402 | DES5/VHF6 | Display Systems for Automotive |
| Dec. 16 | 13:30-14:30 | Room 402 | DES6 | Display Driving & AI Technology |
| Dec. 16 | 9:20-10:40 | Room 501 | DESp1 | Display Electronics and Systems |
VHF1/DES1: Image Quality and Analysis
Dec. 14 13:00-14:20 Room 411
Chair: Yoshie Imai (Mitsubishi Elec.)
Co-Chair: Haruhiko Okumura (Toshiba)
| VHF1/DES1-1
13:00 |
Invited Next Generation Personalized Display Systems Employing Adaptive Dynamic-Range Compression Techniques Considering Circadian Rhythm and Personal Behaviors *Sakuichi Ohtsuka1, Saki Iwaida2, Yuichiro Orita3, Shoko Hira3, Masayuki Kashima3 1. International College of Technology, Kanazawa (Japan), 2. Kagoshima Clinical Engineering College (Japan), 3. Kagoshima University (Japan) |
| Reproducing fidelitous images, those that include the individual impressions induced when the real scene is viewed, is important. Our previous studies and other physiological research results suggest that the human visual system characteristic dynamically changes depending on circadian rhythm and personal behavior. This paper describes these findings and future issues. | |
| VHF1/DES1-2
13:20 |
GAN Based Image-to-Image Translation Model for Nighttime Road Scene Dataset *Rebeka Sultana1, Yuki Hikosaka1, Gosuke Ohashi1 1. Shizuoka University (Japan) |
| A large-scale dataset boosts the performance of deep learning models. However, in-vehicle camera image datasets contain many daytime and few nighttime scenes. Therefore, this study proposes an image-to-image translation model to convert daytime road scenes to nighttime road scenes by preserving visual appearance and contents to increase nighttime dataset. | |
| VHF1/DES1-3
13:40 |
Invited Joint Monocular Depth Model for Depth Perception Enhancement Based on Shading, Contrast, and Motion Parallax *Seungchul Aiden Ryu1, Hyunjin Yoo1, Tara Akhavan1 1. Faurecia Irystec (Canada) |
| This paper proposes a novel joint model to enhance monocular depth perception, significantly improving both depth volume perception and depth range perception. The proposed framework can provide an enhanced depth perception on any conventional 2D display, but also it can be applicable to the 3D display devices since it is complimentary for binocular depth cues. | |
| VHF1/DES1-4
14:00 |
Deep Learning Based Layered Point Cloud Compression for Representing Shape Aware Level of Detail *Hideaki Kimata1 1. Kogakuin University (Japan) |
| Point cloud compression methods based on deep learning are being studied. Extracting a part of point cloud from compressed data to grasp the characteristic shape of an object is an important function. I propose ranking and hierarchical coding that can sequentially decode main features of point cloud. |
DES2/INP3: Five Senses & Human Augmentation Technology
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 15 13:00-14:20 Room 402
Chair: Haruhiko Okumura (Toshiba)
| DES2/INP3-1
13:00 |
Invited Five-Sense Engineering and Cross-Modal Effects Associated to XR Technology *Katsunori Okajima1 1. Yokohama National University (Japan) |
| I will talk about five-sense engineering which is critical for developing XR systems aiming at the ultimate sensory reproduction. Actually, XR equipment is an ideal tool for studying five senses too. In addition, I will introduce several kinds of cross-modal effects focused on vision in relation to XR technology. | |
| DES2/INP3-2
13:40 |
Invited Human Augmentation Platform (HAPF) Using 6G Network *Atsushi Harada1, Syunpei Miyaura1, Yasuhiro Miki1, Hironori Ishikawa1, Toru Nishimura1 1. NTT DOCOMO, INC. (Japan) |
| We introduce the Human Augmentation Platform (HAPF), a platform enabling social implementation of human augmentation as a potential use case for 6G towards a well-being society. HAPF absorbs physical differences between the subject of an action and the target to transfer human behavior precisely and efficiently from one to another. | |
| DES2/INP3-3L
14:00 |
Invited Sync Sofa: Sofa-type Multimodal Communication System that Provides a Feeling of Being Next to Each Other *Yuki Tajima1, Shota Okubo1, Tomoaki Konno1, Toshiharu Horiuchi1, Tatsuya Kobayashi1 1. KDDI Research, inc. (Japan) |
| We have developed a new communication system: “Sync Sofa” based on the concept that a user can communicate with their partner as if he or she is next to the user. Because Sync Sofa is equipped with visual, audio, and tactile input/output devices, it can transmit the sensation of the partner being next to the user via a network even if the partner is in a... |
INP4/DES3: AR/VR Interactive Technologies (2) Five Senses and Cross-Modal Technology
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 15 14:50-16:10 Room 402
Chair: Hiroshi Haga (Tianma Japan)
Co-Chair: Yuji Suzuki (Japan Display)
| INP4/DES3-1
14:50 |
Invited Embedded Optical Sensing with Display Systems for Virtual-Physical Interactions *Maki Sugimoto1 1. Keio University (Japan) |
| This talk introduces embedded optical sensing techniques with display systems for virtual-physical interactions. With advances in ubiquitous sensing technology, we can design embedded optical sensing systems for various purposes, such as sharing facial expressions and wind for communications, to extend our possibilities in cyber-physical spaces. | |
| INP4/DES3-2
15:10 |
Invited Latest Trends in Biometric Sensing Head Mounted Displays *Yuki Ban1 1. The University of Tokyo (Japan) |
| Measuring biometric information helps us estimate the users' excitement degree and their negative and positive emotions. This paper introduces the various biological sensing HMDs including our research and discusses VR applications using those HMDs. | |
| INP4/DES3-3
15:30 |
Invited ModularHMD for Seamless Interactions between VR and Real Worlds *Kazuki Takashima1 1. Tohoku University (Japan) |
| We propose ModularHMD[1], a new HMD allowing a user to seamlessly switch interactions between VR and real-worlds. It is comprised of a HMD and three removable modules. Each module has four states: occluding, VR view, video see-through, and removed/reused, which allows the user to quickly setup the necessary HMD functions. | |
| INP4/DES3-4L
15:50 |
Development of Tactile Display for Measuring Human Dexterity *Hiraku Komura1, Takumi Takeshige2, Masahiro Ohka2 1. Kyushu Institute of Technology (Japan), 2. Nagoya University (Japan) |
| We aim to develop a tactile display that can easily evaluate a person's dexterity. In this study, we focus on the stick rabbit illusion as a fundamental phenomenon and investigate its relationship with dexterity. Through our investigation, we clarified that stick rabbit illusion can be used as dexterity tester. |
DES4: Micro LED Driving
Special Topic of Interest on Micro/Mini LEDs
Dec. 15 16:40-18:00 Room 413
Chair: Reiji Hattori (Kyushu Univ.)
| DES4-1
16:40 |
P-Type LTPS TFT-based Micro Light-Emitting Diode Pixel Circuit using Quaternary Digital Driving *Hwarim Im1, Eun Kyo Jung1, Yong-Sang Kim1 1. Sungkyunkwan University (Korea) |
| We proposed a micro light-emitting diode (μLED) pixel circuit using quaternary digital driving. The proposed circuit used a stepwise signal to control the emission time. The proposed circuit exhibited a low delay time below 500 ns and an error rate below 3% with a threshold voltage shift of ±0.5 V. | |
| DES4-2
17:00 |
A Mini LED Driving Circuit compensating for VTH and VSS Variation by Charge Conservation of Capacitor *Sung-Chun Chen1, Ming-Yang Deng2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AU Optronics Corporation (Taiwan) |
| This work proposes a mini-LED driving circuit with compensation for threshold voltage variations of the LTPS-TFTs and I-R rise of power line. The simulation results show that the relative current error rates are below 8.27%. Hence, the feasibility of proposed circuit to providing a uniform image is verified. | |
| DES4-3
17:20 |
Feasibility Study of Traditional Demura Technology Applied to MicroLEDs *Bojia Lyu1, Yi Lai1, Yuanjian Cui1, Tianyi Wu1, Yuan Ding1 1. Shanghai Tianma Microelectronics Co., Ltd. (China) |
| Demura, a technology that adjusts pixel brightness to improve the mura effect of a display, has been widely employed in AMOLEDs. We perform Demura verification on a 7.56-inch 240x320 resolution MicroLED with PAM driving mode in this study, and we examine the compensation distortion issue that exists during the process. | |
| DES4-4L
17:40 |
Invited Advanced Active Matrix Micro LED Driving Technology with Thin Film Transistors *Yong-Sang Kim1, Hwarim Im1, Eun Kyo Jung1 1. Sungkyunkwan University (Korea) |
| We proposed the thin-film transistor (TFT)-based pixel circuit with pulse width modulation (PWM) for the μLED displays. The PWM was applied to overcome wavelength shifts and use tens of μA current in considering EQE characteristics. The proposed circuit represented the gray level by controlling emission time using PWM data (VDATA_PWM). |
DES5/VHF6: Display Systems for Automotive
Special Topic of Interest on Automotive Displays
Dec. 16 10:50-12:10 Room 402
Chair: Haruhiko Okumura (Toshiba)
Co-Chair: Yuzo Hisatake (Shizuoka Univ.)
| DES5/VHF6-1
10:50 |
Invited Automotive Exterior Displays: System Parameters and Technologies to Improve Traffic Safety *Karlheinz Blankenbach1, Nadine Nowak1 1. Pforzheim University (Germany) |
| Autonomous driving will change traffic behavior: Visual communication with a “driver” is not feasible, especially for pedestrians. Exterior displays can fill this gap and raise traffic safety incl. manual driving. We report on use cases, ambient light measurements, display size and technologies and evaluations with subjects for symbols and readability. | |
| DES5/VHF6-2
11:10 |
Invited Human Sensing and HMI for Safe Transition from L2 and L3 Automated to Manual Driving *Toshihisa Sato1 1. National Institute of Advanced Industrial Science and Technology (AIST) (Japan) |
| This paper describes human factor issues of system-initiated transitions from level 2 and level 3 automated (SAE definition) to manual driving. We investigated biometric indices that could detect a decline in driver states during level 2 use. As for the planned transition from the level 3 system, we have developed quantitative evaluation methods for the driver's attentiveness before he/she receives RtI (Request to Intervene)... | |
| DES5/VHF6-3
11:30 |
The Impact of Sensor Noise on the Reproducibility of Sparkle Values for Different Measurement Setups *Ingo Rotscholl1, Udo Krüger1 1. TechnoTeam Bildverarbeitung GmbH (Germany) |
| This contribution examines the influence of ILMD noise on the reproducibility of different sparkle evaluation setups. Sparkle measurements at different sampling rates and aperture numbers are simulated for different ILMD sensors. Especially at low sparkle levels, the SNR can become very critical for some evaluation techniques such that the number of measurements needs to be increased significantly to ensure reproducibility among the different ILMD sensors. | |
| DES5/VHF6-4L
11:50 |
Invited How Users Experience Autonomous Vehicle Driving: Provision of Information Through AR HUD *Vassilis Charissis1 1. Glasgow Caledonian University (UK) |
| This work examines if the provision of information through Augmented Reality (AR) Head-Up Display (HUD) alleviates passengers' anxiety during autonomous vehicle (AV) driving. The evaluation was performed in a VR driving simulator, by ten volunteer users. The preliminary results present the benefits and drawbacks experienced by the users. |
DES6: Display Driving & AI Technology
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 16 13:30-14:30 Room 402
Chair: Haruhiko Okumura (Toshiba)
Co-Chair: Mutsumi Kimura (Ryukoku Univ.)
| DES6-1
13:30 |
Simple Adaptive HDR System Using Gamma Correction Circuit with Variable Gamma Value *Ao Han1, Yuji Sano1 1. Toyo University (Japan) |
| To apply to simple surveillance systems, which are equipped with small camera device such as web camera, we proposed a small-scale adaptive HDR system. Furthermore, we developed new gamma correction circuit to be installed in our system to correct image degradation in the camera image. | |
| DES6-2
13:50 |
Invited A Cost-effective Burn-in Compensation Method Using Deep Convolutional Networks with Detail Layer Accumulation *Jiheon Ok1, Un-Ki Park1, Sewhan Na1, Hyeon-Su Park1, Hyun-Wook Lim1, Jae-Youl Lee1 1. Samsung Electronics (Korea) |
| In this paper, a cost-effective burn-in compensation method based on optical imaging is proposed. A deep convolutional networks using the accumulated detail layer as a reduced reference is applied to the captured images. Experimental results show that the proposed method reconstructs burn-in details effectively to be followed by multi-unit compensation. | |
| DES6-3
14:10 |
A New Integrated Scan/Emission Driver with Adjustable Emission Pulse Width Using 3-Phase Clock Signals *Eunho Kim1, Eun Kyo Jung1, Sung-Hyuck Ahn1, Sara Hong1, Ye-Rim Jeong1, Hwarim Im1, Yong-Sang Kim1 1. Sungkyunkwan University (Korea) |
| We propose a new integrated scan/emission driver circuit using 3-phase clock signals. The scan/emission part shares the clock lines, and no additional dummy stage is needed. The scan output is pulled up by both pull-down and -up TFTs to reduce the rising time and the size of the pull-up TFT. In addition, the emission output pulse width can be adjusted in 1 frame time. Therefore, the... |
DESp1: Display Electronics and Systems
Dec. 16 9:20-10:40 Room 501
| DESp1-1 | Long term Chicken Cockscomb Color Detection of the Video Surveillance in a Poultry House Ting-Yu Wei 1, *Tzung-Han Lin1, Tsung-Lin Lu1, Yao-Chuan Tsai 2 1. National Taiwan University of Science and Technology (Taiwan), 2. National Chung Hsing University (Taiwan) |
| This paper aims to observe the color of chicken cockscomb in a long term during growing. To achieve that, the color correction algorithm was applied to the surveillance system in the poultry house to suppress the affection due to the changing daylight. Based on the color-corrected video, the YOLOv4 AI model is used to detect the chicken cockscomb automatically and collect the color for analysis of... | |
| DESp1-2 | Development of Multi-Functional Large Line Display *Keisuke Mutou1, Yuji Seki1, Yuhi Sakagami1, Naoki Kawasaki1, Makiko Okumura1 1. Kanagawa Institute of Technology (Japan) |
| We have developed a large size multi-functional line display with 128 LEDs which can not only display images and QR code but also use as lighting. It was possible to read the QR code information flashed on the display with a smartphone. | |
| DESp1-3L | Development of Driving IC for POV Display Using Two-Dimensional LED Array and Micro-LED *Zhongzheng Xiao1, Ryoma Matsuno1, Reiji Hattori1 1. Kyushu University (Japan) |
| The driving IC for persistence of vision display using a rhombus-arranged two-dimensional LED array with cylindrically rotation is developed for improving its resolution by increasing the bit-rate for digital signal and decreasing the number of contacting pads. This driving method is also available to reduce the number of LED in a micro-display. | |
| DESp1-4L | Analysis of Response Time Characteristics for Gaming Display at Various Refresh Rates *Seungwon Yoo1, Jaehong Kim1 1. LG Display (Korea) |
| Variable Refresh Rate(VRR) has become an important feature as game market grows. In this paper, the response time of LCD and OLED gaming monitor was measured at VRR environment. LCD gaming monitor showed different response time values at various refresh rate while there is no difference in OLED gaming monitor. | |
| DESp1-5L | Elimination of Apparent Image on Single-Pixel-Imaging by Use of High-Frame-Rate Display With Latent Random Dot Patterns *Hiroki Takatsuka1, Masaki Yasugi1, Naoya Mukojima1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| Single-pixel-imaging in which random patterns for illumination are latent in the apparent image have the problem that the apparent image remains on the reconstructed image. By using negative-positive inversion of the apparent image as the illumination pattern, the influence of the apparent image on the reconstructed image was reduced. | |
| DESp1-6L | Reconstruction of Gesture Images by Using Banner as Illumination of Single-Pixel Imaging *Naoya Mukojima1, Hiroki Takatsuka1, Masaki Yasugi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| This paper proposes a method to reconstruct a gesture image by single-pixel imaging (SPI) using a banner displayed on an electronic board as illumination. We have succeeded in reconstructing the gesture by SPI using 1500 randomly encoded sub-frames of the banner. |
Workshop on Flexible Electronics
| Dec. 14 | 16:40-17:40 | Room 413 | FLX1 | Flexible Sensors and Devices |
| Dec. 15 | 14:50-16:10 | Room 411 | FLX2 | Oxide TFT Technologies for Flexible Displays |
| Dec. 15 | 16:40-17:40 | Room 411 | LCT5/FLX3 | Flexible and Improved Displays |
| Dec. 16 | 9:00-10:00 | Room 504 | FLX4 | Advanced Image Sensors and Related Technologies |
| Dec. 16 | 13:30-14:50 | Room 405 | FLX5 | Advanced Materials and Process for Flexible OLEDs |
| Dec. 16 | 11:10-12:30 | Room 501 | FLXp1 | Devices and Materials for Flexible Electronics |
FLX1: Flexible Sensors and Devices
Dec. 14 16:40-17:40 Room 413
Chair: Hoshihide Kamata (AIST)
Co-Chair: Mitsuru Nakata (NHK)
| FLX1-1
16:40 |
Invited Stretchable Hybrid Electronics for High-Performance On-Skin Electronics *Yongtaek Hong1 1. Seoul National University (Korea) |
| Key enabling technology for stretchable hybrid electronics, including strain-engineered elastic platform and integration of rigid high-performance devices with printed soft components, will be discussed. Several prototypes based on the developed technology will be presented for display, sensor, UI/UX, and thermoelectric applications. | |
| FLX1-2
17:00 |
Invited Single Crystalline Silicon CMOSFETs on Plastic and Their Application to Highly Sensitive Virus Detection System *Seiichiro Higashi1, Rikiya Sumichika1, Toru Suehiro1, Hiroaki Hanafusa1, Yoshiko Okamura1 1. Hiroshima University (Japan) |
| Formation of single-crystalline silicon CMOSFETs on PET has been achieved by meniscus force mediated layer transfer (MLT) with a high yield of 99.97% and N-channel transistors show typical mobility of 529cm2V-1s-1. A novel application of MLT technology to a virus detection device based on micro-chamber matrix is addressed. | |
| FLX1-3L
17:20 |
Stretchable Through-Hole Interconnect Structure for Deformable Display Applications *Masashi Miyakawa1, Mitsuru Nakata1, Hiroshi Tsuji1, Keitada Mineo1, Toshihiro Yamamoto2, Yoshihide Fujisaki1 1. NHK Science & Technology Research Laboratories (Japan), 2. NHK Engineering System, Inc. (Japan) |
| The technology of stretchable displays is promising with regard to introducing a new style of deformable display applications. We demonstrate a highly stretchable light-emitting diode (LED) array with a stretchable through-hole interconnect structure using printed stretchable conductors. The developed stretchable interconnect structure exhibited a stable electrical performance of up to 125% strain in its interconnects without disconnections. |
FLX2: Oxide TFT Technologies for Flexible Displays
Dec. 15 14:50-16:10 Room 411
Chair: Yukiharu Uraoka (NAIST)
Co-Chair: Manabu Ito (Toppan)
| FLX2-1
14:50 |
Invited Design of Atomic Layer Deposited Oxide Channel Transistor for High-Performance, High-Pixel Density AMOLED *Jae Kyeong Jeong1, Jae Seok Hur1, Hyeon Joo Seul1, Min Hoe Cho1 1. Hanyang Univ. (Korea) |
| In this paper, we will address the design of oxide semiconductor on basis of atomic layer deposition for high-performance, high-pixel density AMOLED. The 2DEG concept can be demonstrated in ALD-based oxide TFTs, which renders the exceptional high field-effect mobility (>70 cm2/Vs) and excellent PBTS/NBTS stability. | |
| FLX2-2
15:10 |
Invited Flexible/Stretchable TFT Backplane Technologies for Deformable Displays *Hiroshi Tsuji1, Masashi Miyakawa1, Tatsuya Takei1, Mitsuru Nakata1 1. NHK (Japan) |
| In this paper, we describe our recent work on the development of flexible/stretchable thin-film transistor (TFT) backplane technologies for deformable displays. A flexible bezel-less TFT backplane with through-plastic-vias and dome-shaped stretchable TFT arrays with acrylic adhesive were developed. | |
| FLX2-3
15:30 |
Invited High Performance Solution Processed Oxide Semiconductors and Hybrid Materials for Flexible Electronics *Juan Paolo Bermundo1, Yukiharu Uraoka1 1. Nara Institute of Science and Technology (Japan) |
| Development of solution-processed channel and gate insulators is essential for large area flexible electronics. Here, we demonstrate how hybrid siloxane materials and oxide semiconductors are used in high performance fully solution-processed TFTs with mobilities >30 cm2/Vs. Our low temperature approach enables fabrication of fully solution-processed TFTs on flexible substrates. | |
| FLX2-4L
15:50 |
Invited New Structure of High Current Driving Oxide TFT for Ultra-High Resolution Display *Sang-Hee Ko Park1, Do Hyung Kim1, Junsung Kim1, Junghoon Yang1, Jingyu Kim1, Seong-In Cho1 1. Korea Advanced Institute of Science and Technology (Korea) |
| We introduce new structure of oxide TFT providing high current in a small footprint and suitable for the flexible display. Introduction of trench within the channel results in the thickness difference of semiconductors in the vertical and lateral regions. While the thicker lateral region of oxide semiconductor plays as a high current path, thin two vertical channels function as the semiconductors to yield acceptable Von with... |
LCT5/FLX3: Flexible and Improved Displays
Dec. 15 16:40-17:40 Room 411
Chair: Mitsuru Chida (Sharp Display Tech.)
Co-Chair: Munehiro Kimura (Nagaoka Univ. of Tech.)
| LCT5/FLX3-1
16:40 |
Solutions to Optimize the Diffraction of LCD CUP *Li Yaying1, Chen Muqing1, Xu Jialing1, Liang Zhixing1, Yang Yan1, Zhong Caijiao1, Yang Xianyan1 1. Tianma Microelectronics Co.,Ltd. (China) |
| Diffraction optimization is one of the hardest challenges in CUP (camera under panel) technology. The regular patterns on the panel lead to diffraction. Compared with OLED, LCD CUP faces more complex diffraction. In this paper, the mechanism of LCD CUP diffraction and its potential design scheme are emphatically analyzed. | |
| LCT5/FLX3-2
17:00 |
Preliminary Experiment on Fast Response Liquid Crystal Drive by Photo-Induced Flexoelectric Effect *Koki Sato1, Sakunosuke Abe1, Ryoma Terasawa1, Munehiro Kimura1 1. Nagaoka University of Technology (Japan) |
| Aiming for realizing ultrafast response by rotating the long axis of the liquid crystal molecule, novel driving scheme based on photo-induced flexoelectric effect are investigated. As a fundamental experiment, response time of nematic liquid crystal mixed with p-dimethylamino-azobenzene are measured with using sandwiched cell whose inner bottom surface has groove structure. | |
| LCT5/FLX3-3
17:20 |
Biaxially Formed Flexible Organic Electronics for 3D LC Optics and Displays Andrew Russell1, Ashley James1, May Wheeler1, *Paul Cain1, William H Reeves1 1. FlexEnable (UK) |
| The low temperature processes of organic electronics (<100°C) allow low Tg flexible substrates to be used (Tg<150°C). We report on recent developments which show that flexible OTFT arrays, liquid crystal cells and Organic LCDs (OLCDs) can be biaxially thermoformed to spherical and other surfaces of complex curvature. |
FLX4: Advanced Image Sensors and Related Technologies
Dec. 16 9:00-10:00 Room 504
Chair: Takashi Nagase (Osaka Metropolitan Univ.)
Co-Chair: Keiichi Akamatsu (Fujifilm)
| FLX4-1
9:00 |
Invited Spectrally Selective Printable Organic Photodetectors: En Route to High-Performance Wearable Color Imagers *Vincenzo Pecunia1 1. Simon Fraser University (Canada) |
| Spectrally selective printable organic photodetectors are uniquely placed to deliver easy-to-fabricate, high-performance color imagers. Herein, we discuss our breakthroughs in spectrally selective printable organic photodetectors with cutting-edge performance and their monolithic stacking into multi-color sensors, which pave the way for high-performance color imagers that could be seamlessly integrated into wearables. | |
| FLX4-2
9:20 |
Invited A Flexible and Stretchable Terahertz Imaging Sheet for Multi-View Visualization *Yukio Kawano1,2,3 1. Chuo University (Japan), 2. Tokyo Institute of Technology (Japan), 3. National Institute of Informatics (Japan) |
| We have developed flexible and stretchable terahertz imaging devices based on carbon nanotube films that exhibit high absorption in a broadband frequency region. We report on multi-view terahertz imaging methods, which have enabled us to fully visualize both the whole outer and inner surface of various industrial products. | |
| FLX4-3
9:40 |
Invited In-Sensor Visual Adaptation with Two-Dimensional MoS2 Phototransistors *Yang Chai1 1. The Hong Kong Polytechnic University (Hong Kong) |
| Machine vision systems that capture images for visual inspection and identification tasks have to be able to perceive a scene under a range of illumination conditions. To achieve this, current systems use circuitry and algorithms that compromise efficiency and increase complexity. Here we report bioinspired vision sensors that are based on molybdenum disulfide phototransistors and exhibit time-varying activation and inhibition characteristics. Charge trap states are intentionally... |
FLX5: Advanced Materials and Process for Flexible OLEDs
Dec. 16 13:30-14:50 Room 405
Chair: Toshimasa Eguchi (Sumitomo Bakelite)
Co-Chair: Akira Nakazawa (AGC)
| FLX5-1
13:30 |
Invited OLED Lighting Fabricated by Roll-to-Roll *Tadahiro Furukawa1 1. Yamagata University (Japan) |
| We have been developing OLED lighting by Roll-to-Roll. The substrates are plastic film and ultra-thin glass. For plastic films, a high gas barrier layer was deposited in the first step. In addition, we have developed new application products that take advantage of the thinness of the OLED. | |
| FLX5-2
13:50 |
Invited True Wearable Textile OLEDs Based on Real Fabric Platform So Yeong Jeong1, Yunha Na1, Ha-Eun Cho1, Junwoo Lee1, *Kyung Cheol Choi1 1. Korea Advanced Institute of Science and Technology (KAIST) (Korea) |
| Wearable displays can potentially offer countless functions while worn on the human body. To realize such displays however requires a combination of various technologies that can function on various curved surfaces reliably and durably, while subjected to bending, wrinkling and stretching. In this study, true wearable large-area textile OLEDs were introduced. | |
| FLX5-3
14:10 |
Analysis of the Influence of Environmental Temperature and Humidity on Mechanical Properties of Flexible Display *Xiaofei Luo1, Zhao Li1, Xiaoming Hao1, Shuang Du1, Peng Cai1, Biao Gao1, Song Zhang1, Shiming Shi1, Dawei Wang1 1. BOE Technology Group Co., LTD. (China) |
| In this paper, by testing the mechanical properties of flexible materials under different temperatures and humidity, the performance of PI/OCA and other materials are affected by the temperature and humidity environment. Based on the folding form, combined with finite element analysis, the change mechanism of folding stress of flexible modules in high temperature, low temperature, high temperature and high humidity environment is analyzed. Finally, the folding... | |
| FLX5-4
14:30 |
Solution-Processed Ultrahigh PHPS Gas Barriers with Glass-like Performance *Tatsuki Sasaki1, Lina Sun1, Yu Kurosawa1, Tatsuhiro Takahashi1, Yoshiyuki Suzuri1 1. Yamagata University (Japan) |
| We report all-solution-processed gas barriers using perhydropolysilazane (PHPS)-derived SiN films densified by vacuum ultraviolet (VUV) irradiation in a nitrogen atmosphere. The appropriate PDSN thickness and irradiated VUV dose afford an excellent WVTR of 4.8x10-5 g m-2 day-1, which makes it one of the best-performing water vapor barriers recorded to date. |
FLXp1: Devices and Materials for Flexible Electronics
Dec. 16 11:10-12:30 Room 501
| FLXp1-1L | Correlation between EL Characteristics and Substrate Surface Roughness in Top-Emission Powder EL Devices *Rikuya Watanabe1, Kojiro Uetani2, Shota Tsuneyasu3, Nobuyuki Nakayama1, Toshifumi Satoh1 1. Tokyo Polytechnic University (Japan), 2. Tokyo University of Science (Japan), 3. National Institute of Technology, Oita College (Japan) |
| Powder electroluminescent (EL) devices are planar light-emitting devices that can be fabricated on paper substrates using a simple printing process. In this study, to clarify the effects of surface roughness to the EL characteristics, we fabricated the EL devices with a top-emission structure on emery papers. |
Workshop on Touch Panels and Input Technologies
| Dec. 14 | 13:00-14:00 | Room 504 | INP1 | AR/VR Interactive Technologies (1) Towards Metaverse |
| Dec. 14 | 14:50-16:10 | Room 504 | INP2 | Eye Tracking and Brain-Computer Interface for AR/VR |
| Dec. 15 | 13:00-14:20 | Room 402 | DES2/INP3 | Five Senses & Human Augmentation Technology |
| Dec. 15 | 14:50-16:10 | Room 402 | INP4/DES3 | AR/VR Interactive Technologies (2) Five Senses and Cross-Modal Technology |
| Dec. 15 | 16:40-17:40 | Room 402 | INP5 | Touch Panel and Under Display Camera |
INP1: AR/VR Interactive Technologies (1) Towards Metaverse
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 14 13:00-14:00 Room 504
Chair: Makoto Sato (Tokyo Tech)
Co-Chair: Kazunori Imoto (Toshiba)
| INP1-1
13:00 |
Invited Juggling on the Moon: A VR System for Complex Motor Skill Learning *Hiroyuki Kambara1,2, Wanhee Cho2, Hyeonseok Kim3, Rikiya Oya1, Yusuke Kitami1, Makoto Kobayashi2, Supat Saetia2, Takahiro Kagawa4, Hirokazu Tanaka5, Makoto Miyakoshi3, John Iversen3, Scott Makeig3, Makoto Sato2, Natsue Yoshimura2 1. Tokyo Polytechnic University (Japan), 2. Tokyo Institute of Technology (Japan), 3. University of California, San Diego (United States of America), 4. Aichi Institute of Technology (Japan), 5. Tokyo City University (Japan) |
| Motor skill training systems based on virtual reality (VR) technologies are becoming more popular in sports training, entertainment, and rehabilitation. In this paper, we will introduce a VR ball-juggling system composed of SPIDAR-W haptic device and a head-mounted-display. The results of juggling training using the VR system will be presented. | |
| INP1-2
13:20 |
Invited Superception: Exploring new 'Self' in the Integration of Humans and Computers *Shunichi Kasahara1 1. Sony Computer Science Laboratories, Inc. (Japan) |
| When humans integrate with computers and acquire abilities and different bodies beyond what we have, to what extent are we ourselves? Through my research framework ''Superception'' for extending human perception and cognition using computer technology, we are investigating how the ''self'' can be shaped when humans and computers integrate. | |
| INP1-3
13:40 |
Invited VR Application of Sensory Display and Effector Actuation by Transcutaneous Electrical Stimulation *Kazuma Aoyama1 1. The University of Tokyo (Japan) |
| Transcutaneous electrical nerve stimulation (TENS) is a technique that noninvasively stimulates the nervous system by applying electric current through electrodes attached to the skin surface. It has the potential to be an interface to control the input and output of human functions because it can induce multimodal sensations such as vision, touch, taste, vestibular sensation, and intranasal chemotherapy sensation, and activate muscles and secretions. This presentation... |
INP2: Eye Tracking and Brain-Computer Interface for AR/VR
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 14 14:50-16:10 Room 504
Chair: Nobuyuki Hashimoto (Japan Women's Univ.)
Co-Chair: Yuichi Sasaki (Mitsubishi Elec.)
| INP2-1
14:50 |
Invited Towards the Brain-Computer Interface for Daily Life *Shin'ichiro Kanoh1 1. Shibaura Institute of Technology (Japan) |
| Brain-computer interface (BCI) is a system to detect user's intentions or “thoughts” from measured signal of brain and nervous activities. In this presentation, our studies to detect mental events (e.g. imagery or selective attention) and mental states (drowsiness, emergency, concentration) for realizing BCI are introduced and discussed. | |
| INP2-2
15:10 |
Invited Comparison between Gaze Input and a Hand-Held Controller in AR Interaction *Mie Sato1 1. Utsunomiya University (Japan) |
| In the interaction with virtual objects, operations that do not require the use of a controller are expected as a convenient way. This study reports comparison between gaze input and a hand-held controller in augmented reality (AR) interaction. Two experiments are conducted: as a cue for gaze input, one uses a wink and the other does the gaze time. From results of the experiments, we summarize... | |
| INP2-3
15:30 |
Invited Eye tracking in the metaverse *Magnus Sävmarker1, Magnus Sävmarker1 1. Tobii Technology K.K. (Japan) |
| With exciting leaps in both hardware and software happening at a rapid pace right now, eye tracking can help enhance virtual interactions, provide innovative new metaverse experiences, and empower users with even greater levels of immersion than ever before. This presentation explains why eye tracking will be a cornerstone in the metaverse. | |
| INP2-4L
15:50 |
Invited Estimation of Input Letter Based on Pupillary Responses and Optokinetic Nystagmus *Kei Kanari1, Chisato Inomata1, Mie Sato1 1. Utsunomiya University (Japan) |
| An information-input interface was developed in which pupillary responses and optokinetic nystagmus (OKN) are used to identify a visual stimulus targeted by a user's attention. The result suggests that pupillary responses and OKN can be used to identify which letter a user intends to select. |
DES2/INP3: Five Senses & Human Augmentation Technology
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 15 13:00-14:20 Room 402
Chair: Haruhiko Okumura (Toshiba)
| DES2/INP3-1
13:00 |
Invited Five-Sense Engineering and Cross-Modal Effects Associated to XR Technology *Katsunori Okajima1 1. Yokohama National University (Japan) |
| I will talk about five-sense engineering which is critical for developing XR systems aiming at the ultimate sensory reproduction. Actually, XR equipment is an ideal tool for studying five senses too. In addition, I will introduce several kinds of cross-modal effects focused on vision in relation to XR technology. | |
| DES2/INP3-2
13:40 |
Invited Human Augmentation Platform (HAPF) Using 6G Network *Atsushi Harada1, Syunpei Miyaura1, Yasuhiro Miki1, Hironori Ishikawa1, Toru Nishimura1 1. NTT DOCOMO, INC. (Japan) |
| We introduce the Human Augmentation Platform (HAPF), a platform enabling social implementation of human augmentation as a potential use case for 6G towards a well-being society. HAPF absorbs physical differences between the subject of an action and the target to transfer human behavior precisely and efficiently from one to another. | |
| DES2/INP3-3L
14:00 |
Invited Sync Sofa: Sofa-type Multimodal Communication System that Provides a Feeling of Being Next to Each Other *Yuki Tajima1, Shota Okubo1, Tomoaki Konno1, Toshiharu Horiuchi1, Tatsuya Kobayashi1 1. KDDI Research, inc. (Japan) |
| We have developed a new communication system: “Sync Sofa” based on the concept that a user can communicate with their partner as if he or she is next to the user. Because Sync Sofa is equipped with visual, audio, and tactile input/output devices, it can transmit the sensation of the partner being next to the user via a network even if the partner is in a... |
INP4/DES3: AR/VR Interactive Technologies (2) Five Senses and Cross-Modal Technology
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 15 14:50-16:10 Room 402
Chair: Hiroshi Haga (Tianma Japan)
Co-Chair: Yuji Suzuki (Japan Display)
| INP4/DES3-1
14:50 |
Invited Embedded Optical Sensing with Display Systems for Virtual-Physical Interactions *Maki Sugimoto1 1. Keio University (Japan) |
| This talk introduces embedded optical sensing techniques with display systems for virtual-physical interactions. With advances in ubiquitous sensing technology, we can design embedded optical sensing systems for various purposes, such as sharing facial expressions and wind for communications, to extend our possibilities in cyber-physical spaces. | |
| INP4/DES3-2
15:10 |
Invited Latest Trends in Biometric Sensing Head Mounted Displays *Yuki Ban1 1. The University of Tokyo (Japan) |
| Measuring biometric information helps us estimate the users' excitement degree and their negative and positive emotions. This paper introduces the various biological sensing HMDs including our research and discusses VR applications using those HMDs. | |
| INP4/DES3-3
15:30 |
Invited ModularHMD for Seamless Interactions between VR and Real Worlds *Kazuki Takashima1 1. Tohoku University (Japan) |
| We propose ModularHMD[1], a new HMD allowing a user to seamlessly switch interactions between VR and real-worlds. It is comprised of a HMD and three removable modules. Each module has four states: occluding, VR view, video see-through, and removed/reused, which allows the user to quickly setup the necessary HMD functions. | |
| INP4/DES3-4L
15:50 |
Development of Tactile Display for Measuring Human Dexterity *Hiraku Komura1, Takumi Takeshige2, Masahiro Ohka2 1. Kyushu Institute of Technology (Japan), 2. Nagoya University (Japan) |
| We aim to develop a tactile display that can easily evaluate a person's dexterity. In this study, we focus on the stick rabbit illusion as a fundamental phenomenon and investigate its relationship with dexterity. Through our investigation, we clarified that stick rabbit illusion can be used as dexterity tester. |
INP5: Touch Panel and Under Display Camera
Special Topic of Interest on Automotive Displays
Dec. 15 16:40-17:40 Room 402
Chair: Kuniaki Yamazaki (Corning Japan)
Co-Chair: Takayuki Morioka (Mitsubishi Elec.)
| INP5-1
16:40 |
Invited Integrated Self-Capacitance On-cell Touch Panel in Flexible OLED Display *Feng Lu1, Zhe Li1, Zihan Zhou1, Jing Zhang1, Qijun Yao1, Yuan Ding1, Yung-Sheng Lu2, Jui-Chuan Chuang2, Chien-Chuan Chen2 1. Shanghai Tianma Microelectronics Co., Ltd. (China), 2. Ilitek Technology Corp. (Taiwan) |
| Designs of self-capacitance “on-cell” touch panel were implemented in a 6.2inch foldable OLED panel with single-layered sensor pattern. The test results showed that the self-capacitance “on-cell” touch panel has high sensitivity even with TFTs connected in serial of the sensor channels. Signal degradation and retransmission effect in thinner stack-ups were also studied and compared with its mutual-capacitance counterpart. The self-capacitance touch panel has shown great potential... | |
| INP5-2
17:00 |
Improvement of writing experience for pen-input devices by means of textured glass surfaces *Naoki Fujita1,2, Takumi Kinoshita1, Masaru Iwao1, Noriaki Masuda1, Yoshitaka Nakanishi2 1. Nippon Electric Glass Co., Ltd. (Japan), 2. Kumamoto University (Japan) |
| Textured glass surfaces have two types of roughness, and they have been developed for pen-input devices. The surfaces that can control the friction coefficient are anticipated as a novel method to improve the writing experience on glass surfaces. | |
| INP5-3L
17:20 |
Influence of Photocurrent Diffusion of Organic Photodetector to Fingerprint-On-Display Using Pinhole Imaging Technique *Muhamad Affiq Bin Misran1, Reiji Hattori1 1. Kyushu University (Japan) |
| Fingerprint on Display (FOD) has been widely studied for large area displays. It can be achieved through solution-processable organic photodetectors. Thus, we analyzed the light distribution from a pinhole structure onto the sensor surface and diffusion photocurrent between adjacent pixels for the organic image sensor. |
Topical Session on DX Sensing and Radiation Imaging
| Dec. 15 | 10:20-11:20 | Room 402 | DXR1 | Development of materials for radiation imaging |
| Dec. 15 | 14:50-15:50 | Room 504 | DXR2 | Development of imaging systems |
| Dec. 15 | 13:20-14:40 | Room 501 | DXRp1 | Development of imaging technique - from materials to systems |
| Dec. 15 | 13:20-14:40 | Room 501 | DXRp2/PHp1 | Development of Radiation Imaging Materials |
DXR1: Development of materials for radiation imaging
Dec. 15 10:20-11:20 Room 402
Chair: Toru Aoki (Shizuoka University)
Co-Chair: Masanori Koshimizu (Shizuoka University)
| DXR1-1
10:20 |
Invited Defect Formation by Radiation in Silver-Doped Phosphate Glasses *Hirokazu Masai1, Masanori Koshimizu2 1. National Institute of Advanced Industrial Science and Technology (AIST) (Japan), 2. Shizuoka University (Japan) |
| Defect formation by irradiation in glass is often observedcompared with that in crystal. Although interactions ofglass and radiation are complicated, generated defectscan work as emission centers in optically active glass. Wehave reviewed our recent work on Ag-doped phosphateglasses exhibiting radiophotoluminescence behavior. | |
| DXR1-2
10:40 |
Invited Development of Translucent Ceramics for X-ray Imaging Applications *Hiromi Kimura1, Yuma Takebuchi2, Takeshi Fujiwara1, Masahito Tanaka1, Takumi Kato2, Daisuke Nakauchi2, Noriaki Kawaguchi2, Takayuki Yanagida2 1. National Institute of Advanced Industrial Science and Technology (Japan), 2. Nara Institute of Science and Technology (Japan) |
| A 0.5% Eu-doped BaFBr translucent ceramic was synthesized, and the potential for X-ray imaging applications was evaluated. The sensitivity of the translucent ceramic was higher than that of a commercial IP (HR-BD). In addition, we have successfully obtained an X-ray image of the electronic component using the translucent ceramic. | |
| DXR1-3
11:00 |
Invited Visualization of Radiation via Radiochromism Induced by Radiation Chemical Reaction *Masanori Koshimizu1, Toshiya Endo2, Yutaka Fujimoto2, Keisuke Asai2 1. Shizuoka University (Japan), 2. Tohoku University (Japan) |
| We have succeeded in developing organic radiochromic materials based on dyes and polymers. Among the polymers investigated in this study, PVC was proved to be an excellent host for radiochromic materials. |
DXR2: Development of imaging systems
Dec. 15 14:50-15:50 Room 504
Chair: Masanori Koshimizu (Shizuoka University)
Co-Chair: Toru Aoki (Shizuoka University)
| DXR2-1
14:50 |
Invited Development of High-Spatial Resolution Scintillator Type X-ray Imager with Optically Silicon Collimator *Kento Tabata1, Junichi Nishizawa1,2, Katsuyuki Takagi1,2, Shailendra Singh2, Hiroki Kase1, Akihumi Koike2,1, Nicholas Eib3, Madu Vora3, Anand Sheel3, Toru Aoki1,2 1. Shizuoka University (Japan), 2. ANSeeN Inc. (Japan), 3. Terapede Systems Inc. (United States of America) |
| The purpose of this paper is to improve the spatial resolution of scintillator detector and evaluate imaging properties for practical use. The scintillator was filled in silicon substrate processed with small square holes for optically separate to solve diffusion of the scintillation. The detection performance of this detector was measured and discussed. | |
| DXR2-2
15:10 |
End-to-End Computational Lensless Imaging with Perceptual Loss *Ya-Ti Chang Lee1, Chung-Hao Tien1 1. National Yang Ming Chiao Tung University (Taiwan) |
| Recently, computational lensless imaging had been making progress with the evolution of artificial neural networks. Nonetheless, generative models for image reconstruction inherit challenge due to its ill-posed nature. We proposed a deep neural network based lensless imaging system by optimizing perceptual loss exclusively to end-to-end reconstruct images conforming human preference. | |
| DXR2-3
15:30 |
Invited Imaging Performance of Neutron Flat-Panel-Detector using IGZO-TFT *Takeshi Fujiwara1,2, Hiroaki Miyoshi3, Yuki Mitsuya4, Yasuo Wakabayashi2, Yoshie Otake2, Koichi Kino1, Masahito Tanaka1, Nagayasu Oshima1, Hiromi Kimura1, Hiroyuki Takahashi4 1. National Institute of Advanced Industrial Science and Technology (AIST) (Japan), 2. RIKEN (Japan), 3. inXite Inc (Japan), 4. The University of Tokyo (Japan) |
| Here, we present the imaging performance of a neutron flat-panel detector (nFPD) based on In-Ga-Zn-O (IGZO) thin-film transistor (TFT)/photodiode array coupled with a LiF/ZnS scintillator sheet. Coupling the scintillator directly to the sensor enables high spatial resolution and high sensitivity. Moreover, unlike lens-coupled neutron cameras, the proposed detector has a large field of view and the size of the detector itself is compact and easy... |
DXRp1: Development of imaging technique - from materials to systems
Dec. 15 13:20-14:40 Room 501
| DXRp1-1 | X-ray Generation Using Pyroelectric Crystals Under UV Laser Irradiation *HIdenori Mimura1,2, Tomoaki Masuzawa1, Yoichiro Neo1, Akifumi Koike2, Toru Aoki1,2 1. Shizuoka University (Japan), 2. ANSeeN Inc. (Japan) |
| X-rays are generated by pulse UV laser (266 nm) irradiation on a LiNbO3 crystal. The electrons produced from the LiNbO3 collide with a Cu target in vacuum, generating X-ray. The X-ray source requires no external voltage. The novel X-ray generation method offers safer radiotherapy than a conventional X-ray source. | |
| DXRp1-2 | TlBr X-ray Imager with Photon-Charge Count Type Readout ASIC Compare with CdTe Image *Toru Aoki1, Hiroki Kase1, Kento Tabata1, Katsuyuki Takagi1 1. Shizuoka University (Japan) |
| X-ray imaging are widely used in various applications, however, conventional films and imagers cannot obtain information about the energy of X-ray photons, and the energy sensitivity curve is constant for each individual patient, so the imaging conditions for obtaining images that are easier for the human eye to see have been obtained through the experience and intuition of technologists. The photon counting imager can obtain photon... | |
| DXRp1-3 | Thermoluminescent Borate Ceramics for Neutron Detection *Masanori Koshimizu1, Hajime Komiya2, Genichiro Wakabayashi3, Yutaka Fujimoto2, Keisuke Asai2 1. Shizuoka University (Japan), 2. Tohoku University (Japan), 3. Kindai University (Japan) |
| We have succeeded in neutron detection via thermoluminescence response of 10B- enriched borate ceramics via subtraction of gamma-ray contribution using 11B-enriched ceramics. | |
| DXRp1-4 | Representation of Internal Structure of 3D X-ray CT in Mixed Reality *Hiroki Kase1, Junichi Nishizawa1, Kento Tabata1, Katsuyuki Takagi1, Toru Aoki1 1. Shizuoka University (Japan) |
| In displaying data from a 3D X-ray CT of internal structures in a mixed reality, a new method of displaying cross sections is discussed. The combination of surface rendering and two-dimensional cross-sectional images was able to express cross-sectional information with density information of internal structures. | |
| DXRp1-5 | Prototype and Demonstration of an X-ray FPD Fabricated Using Scalable Mounting Technology *Akifumi Koike1, Takaharu Okunoyama1, Tsuyoshi Terao1, Katsuyuki Takagi1,2, Junichi Nishizawa1,2, Toshiyuki Takagi1,2, Kohei Toyoda1,2, Hidenori Mimura2,1, Toru Aoki2,1 1. ANSeeN Inc. (Japan), 2. Shizuoka University (Japan) |
| A direct conversion photon counting X-ray imaging system with a hybrid structure of CdTe and TSV processing readout circuit was developed and demonstrated X-ray imaging with 3x3 FPD prototype. Size scalable mounting structure was developed with 4-sided batteable sensor modules. |
DXRp2/PHp1: Development of Radiation Imaging Materials
Dec. 15 13:20-14:40 Room 501
| DXRp2/PHp1-1 | Development of Organic Scintillators Using Molecules Exhibiting Aggregation-Induced Emission *Masanori Koshimizu1, Atsushi Sato2, Akito Watanabe2, Yutaka Fujimoto2, Keisuke Asai2 1. Shizuoka University (Japan), 2. Tohoku University (Japan) |
| We have succeeded in the development of plastic scintillators containing phosphors with aggregation-induced emission characteristics. |
Topical Session on Metaverse System
| Dec. 15 | 10:20-11:20 | Room 405 | MVS1 | Metaverse AI |
| Dec. 15 | 16:40-17:20 | Room 405 | MVS2 | Metaverse Space & Five Senses |
MVS1: Metaverse AI
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 15 10:20-11:20 Room 405
Chair: Takayuki Fujiwara (Hitachi)
Co-Chair: Satoshi Ouchi (Hitachi)
| MVS1-1
10:20 |
PBR Textures Capture by CNN Trained in Virtual 3D Scene *Chih Yang1, Tzung-Han Lin1 1. National Taiwan University of Science and Technology (Taiwan) |
| This study proposes a PBR (physically based rendering) texture capturing system using CNN (convolutional neural network). To obtain training data, we built a virtual capturing system in computer graphics environment. The final trained CNN was able to generate a set of PBR texture after inputting 4 photos of different lighting conditions. | |
| MVS1-2
10:40 |
CNN-based Normal Map Generator for Creating Relightable Portrait Images *Ching-Yi Kuo1, Chih Yang1, Tzung-Han Lin1 1. National Taiwan University of Science and Technology (Taiwan) |
| The paper proposes an AI model to generate accurate normal maps for portrait images. We utilized a portrait photo booth system based on photometric methods to generate training data. With these data, users only need to input a portrait image, then it can be converted into normal map image which is further used to relight the color portrait image. | |
| MVS1-3
11:00 |
Combination of Quantum Optimization and Metaverse for Stable Power Grid *Shutaro Ouchi1 1. University of Tokyo (Japan) |
| Various difficulties may arise when feeding back solutions to optimization problems that address complex social issues to reality, and verification of the solutions is necessary. This study proposed a combination of quantum optimization and simulation within Metaverse to improve computational accuracy and configure a stable power grid. |
MVS2: Metaverse Space & Five Senses
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 15 16:40-17:20 Room 405
Chair: Satoshi Ouchi (Hitachi)
Co-Chair: Takayuki Fujiwara (Hitachi)
| MVS2-1
16:40 |
Invited Applications of Technology Inheritance with a Mixed Reality Headset *Yusuke Saito1, Tokinari Ishiyama1, Shota Suto1, Ryota Yamaga1, Toshimasa Shiraki1 1. HoloLab.Inc (Japan) |
| As multiple metaverse applications that superimpose virtual information on the real world, we have developed applications such as ''TechniCapture,'' which can spatially record the fingers and the gazes of a skilled worker at work and project them over the real work environment. | |
| MVS2-2
17:00 |
Development of a Remote Field Operation Support System with Functions of Free Viewpoint Observation and Free Hand Gesture Instruction via Metaverse *Takashi Numata1, Yuya Ogi1, Keiichi Mitani1, Kazuyuki Tajima1, Yusuke Nakamura1, Naohito Ikeda1, Kenichi Shimada1 1. Hitachi, Ltd. (Japan) |
| We developed a remote field operation support system with functions for free viewpoint observation and hand gesture instruction via metaverse. This novel system enabled users to switch between observation and instruction seamlessly without switching devices. The system improved remote support time efficiency by 14.6 % compared with a conventional system. |