Patents by Inventor Kenji Hanzawa

Kenji Hanzawa 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 display device
    Patent number: 6690345
    Abstract: After image is reduced by shortening the erasing time after turnoff of the power supply by providing charge flow paths.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: February 10, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Kenji Hanzawa, Shuji Hagino
  • Liquid crystal display device
    Publication number: 20020089482
    Abstract: After image is reduced by shortening the erasing time after turnoff of the power supply by providing charge flow paths.
    Type: Application
    Filed: December 27, 2001
    Publication date: July 11, 2002
    Inventors: Kenji Hanzawa, Shuji Hagino
  • Liquid crystal display device with stabilized common potential
    Patent number: 5831605
    Abstract: In a common potential stabilizing active matrix liquid crystal display device, the common potential is detected via a common potential detecting terminal provided at the perimeter of the common electrode, the detected potential is compared with a reference potential and the difference is amplified by an amplifier and is negatively fed back to a common potential supply terminal provided at the perimeter of the common electrode.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: November 3, 1998
    Assignee: Hosiden Corporation
    Inventors: Masaru Yasui, Kenji Hanzawa, Yuko Hori