Patents by Inventor Shitaro Hashimoto

Shitaro Hashimoto 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).

  • Four-level voltage supply for liquid crystal display
    Patent number: 4050064
    Abstract: A liquid crystal display enabling circuitry wherein the backplate electrode of a liquid crystal display is activated by a four-level voltage while the respective segment electrodes thereof are activated by a two-level voltage. This includes at least two input terminals, five output terminals, a voltage dividing resistor network and complementary MOSFET switching means and thereby provides the four-level voltage for the backplate electrode and the four-level voltage for the segment electrodes. In addition, this may be implemented with MOS integrated circuitry technology (and not bipolar integrated circuitry technology).
    Type: Grant
    Filed: May 11, 1976
    Date of Patent: September 20, 1977
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shitaro Hashimoto, Yuuichi Sato