H
Hidefumi Yoshida
Researcher at Fujitsu
Publications - 48
Citations - 1293
Hidefumi Yoshida is an academic researcher from Fujitsu. The author has contributed to research in topics: Liquid-crystal display & Liquid crystal. The author has an hindex of 19, co-authored 48 publications receiving 1290 citations. Previous affiliations of Hidefumi Yoshida include Liquid Crystal Institute.
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Patent
Vertically-aligned (VA) liquid crystal display device
Arihiro Takeda,Katsufumi Ohmuro,Yoshio Koike,Shingo Kataoka,Takahiro Sasaki,Takashi Sasabayashi,Hideaki Tsuda,Hideo Chida,Makoto Ohashi,Kenji Okamoto,Hisashi Yamaguchi,Minoru Otani,Makoto Morishige,Noriaki Furukawa,Tsuyoshi Kamada,Yoshinori Tanaka,Atsuyuki Hoshino,Shogo Hayashi,Hideaki Takizawa,Takeshi Kinjou,Makoto Tachibanaki,Keiji Imoto,Tadashi Hasegawa,Hidefumi Yoshida,Hiroyasu Inoue,Yoji Taniguchi,Tetsuya Fujikawa,Satoshi Murata,Manabu Sawasaki,Tomonori Tanose,Shiro Hirota,Masahiro Ikeda,Kunihiro Tashiro,Kouji Tsukao,Yasutoshi Tasaka,Takatoshi Mayama,Seiji Tanuma,Yohei Nakanishi +37 more
TL;DR: In this article, a vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed, which uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage was applied, and oblique when an intermediate voltage is applied.
Patent
Domain divided liquid crystal display device with particular pretilt angles and directions in each domain
Yoshio Koike,Kenji Okamoto,Seiji Tanuma,Tsuyoshi Kamada,Yoshiro Katayama,Makoto Morishige,Hidefumi Yoshida,Kazutaka Hanaoka,Syun Tsuyuki +8 more
TL;DR: In this paper, a liquid crystal display device comprising different liquid crystal aligning domains in each of a plurality of unit regions for improving a characteristic of a viewing angle is presented, where molecules of the liquid crystal located intermediately between the first and second plates rise in accordance with the first pretilt angle when voltage is applied.
Patent
Liquid crystal display device and thin film transistor substrate
Arihiro Takeda,Yoshio Koike,Takahiro Sasaki,Kouji Tsukao,Shingo Kataoka,Kimiaki Nakamura,Yuichi Inoue,Kazutaka Hanaoka,Seiji Tanuma,Takatoshi Mayama,Hidefumi Yoshida,Yasutoshi Tasaka,Takashi Sasabayashi,Yohei Nakanishi +13 more
TL;DR: In this paper, a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon is presented.
Patent
Liquid crystal display apparatus having wide transparent electrode and stripe electrodes
Hidefumi Yoshida,Yasutoshi Tasaka,Takashi Sasabayashi,Yohei Nakanishi,Kimiaki Nakamura,Yoshio Koike,Tetsuya Fujikawa +6 more
TL;DR: In this paper, a liquid crystal is arranged between a pair of substrates, and an oblique electric field is formed between the stripe electrodes and the transparent electrode, so that the liquid crystal molecules are aligned along the oblique field.
Patent
Liquid crystal display device and method of preventing image sticking thereon
TL;DR: In this article, a sub picture element electrode directly connected to a thin film transistor is disposed between a floating sub-picture element electrode capacitively coupled to a control electrode and a gate bus line in order to prevent injection of electric charges from the gate bus lines to the floating sub pictures element electrode.