Patents by Inventor Seiichi Sagi

Seiichi Sagi 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: 5874933
    Abstract: A multi-gradation liquid crystal display having dual display definition modes that can display both TV pictures and office automation images, both without flicker. Scanning electrodes extend in a first direction. Scanning and non-scanning voltages are selectively applied to the scanning electrodes. Signal electrodes extend in a second direction perpendicular to the first direction. First and second signal voltages are selectively applied to the signal electrodes. A layer of liquid crystal is sandwiched between the scanning and signal electrodes. Mode switching is provided for switching display between a first mode wherein an image is displayed by two-gradation pixels and a second mode wherein an image is displayed by three or more gradation pixels.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: February 23, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hoko Hirai, Masaki Miyatake, Kenshi Tsuchiya, Seiichi Sagi