Patents by Inventor Kioichi Yamamoto

Kioichi Yamamoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5233340
    Abstract: A method of driving a display device with a plurality of scanning side electrodes and a plurality of data side electrodes which are disposed in directions intersecting each other, and a dielectric layer interposed between the scanning side electrodes and the data side electrodes, and including steps of applying modulation voltages corresponding to display data to the data side electrodes, and also applying writing voltages of positive or negative polarity to the scanning side electrodes through line sequence, so as to cause picture elements composed of the dielectric layer to emit light. The driving method further includes steps of thinning out the display data, and applying a plurality of kinds of modulation voltages different in amplitude according to each frame, so as to cause the picture elements to effect gradation display of different brightness in multi-stages.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: August 3, 1993
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hisashi Yamaguchi, Atsushi Sakamoto, Kazuo Shoji, Kioichi Yamamoto, Toshihiro Ohba, Hisashi Uede