Patents by Inventor Kenkichi Harada

Kenkichi Harada 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 with reflector having alternating rugged patterns
    Patent number: 7652733
    Abstract: There is provided a light-reflector used in a liquid crystal display device which uses an externally incident light as a light source by reflecting the externally incident light to a viewer, wherein the light-reflector is formed at a surface thereof with a rugged pattern comprised of an alternating pattern of pixel pattern areas, each pixel pattern area positioned to overlie a respective one pixel of the liquid crystal display device, each of the pixel pattern areas of the alternating pattern being different, wherein each pixel pattern area of the alternating pattern is comprised of alternately formed recessed and raised portions, and the alternating pattern is formed periodically repeatedly every two pixels.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: January 26, 2010
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Michiaki Sakamoto, Hironori Kikkawa, Kenkichi Harada
  • Liquid crystal display device
    Publication number: 20030103178
    Abstract: There is provided a light-reflector used in a liquid crystal display device which uses an externally incident light as a light source by reflecting the externally incident light to a viewer, wherein the light-reflector is formed at a surface thereof with a rugged pattern comprised of alternately formed recessed and raised portions, and the rugged pattern is formed periodically repeatedly every two pixels.
    Type: Application
    Filed: November 7, 2002
    Publication date: June 5, 2003
    Applicant: NEC Corporation
    Inventors: Michiaki Sakamoto, Hironori Kikkawa, Kenkichi Harada