J
Jun Koyama
Researcher at Toshiba
Publications - 355
Citations - 9064
Jun Koyama is an academic researcher from Toshiba. The author has contributed to research in topics: Thin-film transistor & Display device. The author has an hindex of 46, co-authored 355 publications receiving 9020 citations.
Papers
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Journal ArticleDOI
36.4L: Late-News Paper: 4.0-in. TFT-OLED Displays and a Novel Digital Driving Method
Kazutaka Inukai,Hajime Kimura,Mayumi Mizukami,Junya Maruyama,Satoshi Murakami,Jun Koyama,Toshimitsu Konuma,Shumpei Yamazaki +7 more
TL;DR: A novel type of digital driving manner of TFT‐OLED display by time‐ratio gray‐scale (TRG) expression that is remarkable especially in large, color, or high‐resolution TFT-OLED displays is proposed.
Patent
Moving Object, Wireless Power Feeding System, and Wireless Power Feeding Method
TL;DR: In this paper, the authors proposed a moving object structure capable of reducing the strength of a radio wave radiated to the surroundings by using a power feeding device to align positions of the antennas of the power feeding devices and the moving object.
Patent
Driver circuit and semiconductor device
TL;DR: In this paper, the silicon nitride layer 910 formed by plasma CVD using a gas containing a hydrogen compound such as silane (SiH4) and ammonia (NH3) is provided on and in direct contact with the oxide semiconductor layer 905 used for the resistor 354, and the silicon oxide layer 909 serving as a barrier layer interposed therebetween.
Patent
Method for driving liquid crystal display device
Jun Koyama,Hiroyuki Miyake +1 more
TL;DR: In this paper, the authors proposed a liquid crystal display device that includes a first substrate provided with a terminal portion, a switching transistor, a driver circuit portion, and a pixel circuit portion including a pixel transistor and a plurality of pixels, and liquid crystal between a pixel electrode and the common electrode.
Patent
Semiconductor display device correcting system and correcting method of semiconductor display device
Shunpei Yamazaki,Jun Koyama +1 more
TL;DR: In this article, a control circuit for carrying out gamma correction of a picture signal supplied from the outside and a nonvolatile memory for storing data for gamma correction is presented, so that an excellent gradation display can be made.