Yosuke Hyodo

Japan Display (Japan)

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Shinichiro Oka

Japan Display (Japan)

Lu Jin

Xinjiang Agricultural University

Genki Asozu

John Wiley & Sons (United States)

Kazuhide Mochizuki

Seoul National University Bundang Hospital

Marina Mochizuki

Japan Display (Japan)

Hiromi Kaneda

Seoul National University Bundang Hospital

Yoshiro Aoki

University of Michigan–Ann Arbor

Naoyuki Asano

Seoul National University Bundang Hospital

T. Koda

Yamagata University

Akihiro Nishioka

Yamagata University

Cooperative Institutions

Japan Display (Japan)

John Wiley & Sons (United States)

Seoul National University Bundang Hospital

University of Central Florida

Samsung (South Korea)

Korea Advanced Institute of Science and Technology

National Archives and Records Administration

Yamagata University

Yamagata University Hospital

Osaka University

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強化された水平視位置と視距離のための視標追跡システムを用いた広視野裸眼立体3Dディスプレイ【Powered by NICT】

Journal of the Society for Information Display (2016)

Daichi Suzuki Hayashi Shuji Yosuke Hyodo Shinichiro Oka Koito Takeo

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45‐2: Distinguished Paper: Ultra‐narrow Border Display with a Cover Glass Using LCDs with a Polyimide Substrate

SID Symposium Digest of Technical Papers (2020)

Shinichiro Oka Yosuke Hyodo Lu Jin Genki Asozu Hiromi Kaneda

We propose a novel plastic Liquid crystal display (LCD) with an ultra‐narrow‐border. As the most significant improvement, the four borders of the LCDs can be folded to wrap the backlight unit. This LCD was based on various new techniques, including the use of plastic substrates, processing of polarizer films, control of the neutral surface of a bending component based on the sealant width, and the use of a cover glass with a lens effect. We believe that these novel LCDs will be useful for numerous new applications.

Backlight

Polarizer

10.1002/sdtp.13953

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Citations (1)

Photoalignment Technology for High Performance IPS-LCDs

ITE Technical Report; ITE Tech. Rep. (2014)

Noboru Kunimatsu Sonoda Hidehiro Yosuke Hyodo Tomioka Yasushi

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Development of Moiré Reduction Technology for Dual-Cell Liquid Crystal Displays

The Journal of The Institute of Image Information and Television Engineers (2022)

Yosuke Hyodo Shinichiro Oka Hirofumi Ohira Takaya Hirose Kazunari Tomizawa

近年,車載用ディスプレイや放送,医療モニタなどの高輝度,高精細に加えて高い信頼性が必要とされる製品分野において,高コントラスト化に対する要望が高まっている.液晶セルを2層重ねて表示するデュアルセル液晶ディスプレイは,画素単位の細かな調光制御を実現し,高いコントラスト性能を備えた液晶表示技術である.本研究では,デュアルセル液晶ディスプレイにおいて課題となるモアレの低減方法について,シミュレーション検討および実験検証を行った.その結果に基づき,調光用の液晶セルの信号線をジグザグ形状とし,走査線の幅を狭くした構造がモアレの低減に対して効果的なことを示す.また,サブピクセル間隔の信号線配置が色むらの発生を抑制する効果があることを明らかにし,デュアルセル液晶ディスプレイにおけるモアレ低減および色むら抑制が可能な画素構造を提案する.

Moiré pattern

10.3169/itej.76.741

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P‐108: Eye‐Tracking IPS 3D Display with a Liquid Crystal Barrier

SID Symposium Digest of Technical Papers (2015)

Shinichiro Oka Takeo Koito Yingbao Yang Hiroki Sugiyama Yosuke Hyodo

We have developed a new eye‐tracking IPS 3D display with a liquid crystal active barrier. A new IPS electrode and active barrier were developed to facilitate 3D wide viewing angle characteristics, low crosstalk and a smooth moving barrier in a 3D eye‐tracking system. The important parameters for the eye‐tracking 3D display are low crosstalk, fast response time of the LC barrier, and wide viewing angle of the image, to show a wide and smooth 3D image. In this paper, a new active barrier electrode, a new liquid crystal material, and a new IPS electrode are introduced for 3D displays using an eye‐tracking system.

Crosstalk

Tracking (education)

Viewing angle

10.1002/sdtp.10096

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Development of Ultranarrow Border LCDs Using Transparent Polyimide Substrates

Proceedings of the International Display Workshops (2020)

Yosuke Hyodo Shinichiro Oka Lu Jin Genki Asozu Hiromi Kaneda

10.36463/idw.2020.0084

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9-2: Optical Compensation Method for Wide Viewing Angle IPS LCD Using a Plastic Substrate

SID Symposium Digest of Technical Papers (2016)

Shinichiro Oka Toshinari Sasaki Takaya Tamaru Yosuke Hyodo Lu Jin

The problem of a sheet LCD using plastic substrates is the narrow viewing angle of the large retardation of typical plastic materials. We have developed the optical compensation and a new process for plastic IPS-LCD with wide viewing angle.

Viewing angle

Flexible display

10.1002/sdtp.10595

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Citations (17)

Hard Spherocylinders of Two Different Lengths as a Model System of a Nematic Liquid Crystal on an Anisotropic Substrate

Journal of the Physical Society of Japan (2016)

T. Koda Yosuke Hyodo Yuichi Momoi Musun Kwak Dongwoo Kang

In this article, we describe the effects of an anisotropic substrate on the alignment of a nematic liquid crystal. We examine how the substrate affects the alignment of a nematic liquid crystal by Monte Carlo simulation. The liquid crystal on a substrate was described by the phase separation of liquid crystal molecules and substrate molecules, both of which were modeled by hard particles. We used hard rods to represent both the liquid crystal and the substrate. The length of the hard rods representing the substrate was adjusted to represent the degree of substrate anisotropy. The results show that the nematic alignment could either be reinforced or weakened, depending on the length of the substrate rods. Mean field theory is used to analyze the simulation results. We confirmed that the distance over which the substrate affects the bulk liquid crystal is about 3 nm for the present hard-rod-based model.

Biaxial nematic

Rod

Crystal (programming language)

10.7566/jpsj.85.024601

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Monte Carlo simulation of interacting liquid crystal and substrate using rigid model molecules

Journal of Information Display (2007)

Yosuke Hyodo T. Koda Yuichi Momoi Woo‐Yeol Kim Akihiro Nishioka

Abstract In the present study, we propose Monte Carlo simulation that takes into consideration the interface phenomena between liquid crystal and substrate. We use rigid model molecules of liquid crystal and substrate. Interface is generated using potential field that induces decomposition of molecules. We use hard spherocylinders as model liquid crystal molecules. Substrate is modeled as region composed of shorter spherocylinders. Our results show that there is a case in which nematic order is reinforced in the vicinity of rubbed substrate.

Crystal (programming language)

10.1080/15980316.2007.9652037

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A wide view auto‐stereoscopic 3D display with an eye‐tracking system for enhanced horizontal viewing position and viewing distance

Journal of the Society for Information Display (2016)

Daichi Suzuki Shuji Hayashi Yosuke Hyodo Shinichiro Oka Takeo Koito

Abstract This paper describes the development of auto‐stereoscopic three‐dimensional (3D) display with an eye‐tracking system for not only the X ‐axis (right–left) and Y ‐axis (up–down) plane directions but also the Z ‐axis (forward–backward) direction. In the past, the eye‐tracking 3D system for the XY ‐axes plane directions that we had developed had a narrow 3D viewing space in the Z ‐axis direction because of occurrence of 3D crosstalk variation on screen. The 3D crosstalk variation on screen was occurred when the viewer's eye position moved back and forth along the Z ‐axis direction. The reason was that the liquid crystal (LC) barrier pitch was fixed and the LC barrier was able to control the only barrier aperture position. To solve this problem, we developed the LC barrier that is able to control the barrier pitch as well as the barrier aperture position in real time, corresponding to the viewer's eye position. As a result, the 3D viewing space has achieved to expand up to 320–1016 mm from the display surface in the Z ‐axis direction and within a range of ±267 mm in the X ‐axis direction. In terms of the Y ‐axis direction, the viewing space is not necessary to be considered, because of a stripe‐shaped parallax barrier.

Position (finance)

Parallax

Stereo display

10.1002/jsid.511

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Citations (6)