Patents by Inventor Tsugiko Minamihara

Tsugiko Minamihara 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).

  • Liquid crystal element and driving method thereof including multi-value signal which ends at zero volts
    Patent number: 5363225
    Abstract: A liquid crystal element includes a plurality of scanning electrodes, a plurality of signal electrodes, and a liquid crystal cell. The scanning and signal electrodes are formed in a matrix configuration. The liquid crystal cell has a pair of substrates provided with a switching device. The switching device has a gate-electrode and a source electrode at a crossing point of the above scanning electrodes and signal electrodes. A ferroelectric liquid crystal fills the liquid crystal cell. Furthermore, the scanning electrode is connected with the gate-electrode of the switching device, and the signal electrode is connected with the source-electrode of the switching device. The scanning electrode transmits a signal to turn on the switching device, and, simultaneously, the signal electrode transmits a multiple-value signal to drive the liquid crystal cell.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: November 8, 1994
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tsugiko Minamihara, Tomoaki Kuratate, Toshio Matsumoto