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Dive into the research topics where Ryutaro Oke is active.

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Featured researches published by Ryutaro Oke.


Ultra-High-Definition Imaging Systems | 2018

55-inch 8K4K IPS-LCDs with high frame frequency, wide color gamut, and stereovision

Ryutaro Oke; Tomohiro Murakoso; Ikuo Hiyama; Yoshihisa Kato; Masahiro Ishii; Junichi Maruyama; Hiromasa Yamashita; Kenkichi Tanioka; Toshio Chiba

An 8K4K-LCD with the diagonal size of 55 inch has been developed. The backplane is based on an amorphous silicon (a-Si) technology and can operate at 120Hz, which is achieved by developing a technology to compensate the charging voltage of pixels. The realization of a high resolution of 8K4K and a high frame frequency of 120Hz is the world first for LCDs with a-Si backplanes. Moreover, a backlight system with laser light sources expands the color gamut. The newly developed LCD covers 99% of color space defined in BT.2020. Additionally, we have established three dimensional 8K4K technology. A 3D polarization filter is attached on the 55-in. 8K4K LCD. The vertical viewing angle of 8K-3D LCD prototype is 8.6 degrees at its optimal viewing position set to 1.2m.


Archive | 2006

Liquid crystal display device and image display device

Kikuo Ono; Takahiro Ochiai; Ryutaro Oke


Archive | 2001

Liquid crystal display device and method of manufacture

Toshiteru Kaneko; Yoshiaki Nakayoshi; Ryutaro Oke; Kikuo Ono; 良彰 仲吉; 記久雄 小野; 隆太郎 桶; 寿輝 金子


SID Symposium Digest of Technical Papers | 2015

72.1: World's First 55‐in. 120Hz‐Driven 8K4K IPS‐LCDs with Wide Color Gamut

Ryutaro Oke; Takashi Nakai; Junichi Maruyama; Daisuke Kajita; Kaori Miyazaki; Masahiro Ishii; Hideki Matsukawa


Archive | 2009

Backlight for liquid crystal display device and liquid crystal display device using the same

Sachiko Yamazaki; Ryutaro Oke; Ikuko Imajo


Archive | 2006

Method for manufacturing display device, and the display device

Ryutaro Oke; 隆太郎 桶


Archive | 2012

Liquid crystal display device with grey-scale voltage correction

Junichi Maruyama; Ryutaro Oke; Yoshihisa Ooishi


Archive | 2011

Liquid crystal display device having a plurality of first and second scanning lines and a plurality of first and second video lines

Ryutaro Oke; Kikuo Ono; Ikuko Mori; Masashi Baba; Yuya Sato


Archive | 2008

BACKLIGHT FOR LIQUID CRYSTAL DISPLAY APPARATUS AND LIQUID CRYSTAL DISPLAY APPARATUS USING THE SAME

Ikuko Imashiro; Ryutaro Oke; Sachiko Yamazaki; 育子 今城; 佐知子 山崎; 隆太郎 桶


The Journal of The Institute of Image Information and Television Engineers | 2018

55-in. 8K-3D IPS-LCDs with 3D Polarization Filters

Junichi Maruyama; Ryutaro Oke; Tomohiro Murakoso; Masahiro Ishii; Ikuo Hiyama; Yoshihisa Kato; Yasuaki Umezawa; Tatsuya Sato; Toru Takahashi; Hiromasa Yamashita; Kenkichi Tanioka; Toshio Chiba

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Toshio Chiba

Tokyo University of Agriculture and Technology

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