Ken Sumiyoshi
NEC
151 Papers
1.8K Citations
Ken Sumiyoshi is an academic researcher from NEC. The author has contributed to research in topics: Liquid-crystal display & Liquid crystal. The author has an hindex of 27, co-authored 151 publications.
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Papers
Patent
Liquid crystal display and method of manufacturing the same and method of driving the same
Kenichi Takatori,Masayoshi Suzuki,Toshiya Ishii,Teruaki Suzuki,Hiroshi Kanoh,Ken Sumiyoshi,Michiaki Sakamoto,Mamoru Okamoto,Yuji Yamamoto,Hiroaki Matsuyama,Kiyomi Kawada,Seiji Suzuki,Yoshihiko Hirai +12 more
- 28 Mar 2007
TL;DR: In this paper, a liquid crystal display has a conductive protrusion disposed on the surface of the upper substrate opposing to the lower substrate, which is disposed over a scanning electrode line or a signal electrode line and has the same potential as the upper electrode.
84
Patent
Optical member, light source apparatus, display apparatus, and terminal apparatus
Shinya Niioka,Ken Sumiyoshi,Shinichi Uehara,Masao Imai,Kenichi Takatori,Fujio Okumura +5 more
- 23 Jun 2006
TL;DR: In this paper, a planar light source, Fresnel lens sheet, and louver are disposed in the stated order in a light source apparatus, and the light utilization ratio can thereby be increased, the directivity of planarly emitted light can be increased and the brightness can be made uniform at the point of observation.
64
Patent
Liquid crystal display device, backlight used for same display device, method for driving same backlight and method for manufacturing same backlight
Ken Sumiyoshi,Toshihiro Yoshioka,Hiroshi Hayama,Jin Matsushima +3 more
- 29 Oct 2013
TL;DR: In this article, a backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight.
60
Patent
Liquid crystal display cell
Masayoshi Suzuki,Kenichi Takatori,Ken Sumiyoshi,Setsuo Kaneko,Teruaki Suzuki,Hideo Shibahara,Yoshihiko Hirai +6 more
- 31 Mar 2000
TL;DR: In this article, the sub-pixel domains are formed by divided orientation alignment in which the subpixel domain are subjected to rubbing in different directions opposite to each other, and the pre-tilt angles of the liquid crystal in the first domain and second domain are selected to obtain a wide viewing angle.
51
Patent
Optical modulating/displaying device and production method therefor and display apparatus mounting the optical modulating/displaying device thereon
Koji Mimura,Ken Sumiyoshi,Goroh Saitoh,Jin Matsusima,Yoshie Yagi +4 more
- 13 Mar 2003
TL;DR: In this paper, a front-light type planar illuminating device is used to propagate light inside a substrate, which is provided with a low-refraction layer and a reflection structure on the outer surface of the substrate.
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