Patents by Inventor Masahiko Akiyama

Masahiko Akiyama 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 having drain and pixel electrodes linkable to a wiring line having a potential
    Patent number: 5392143
    Abstract: A liquid crystal display provides redundant circuits to ensure reliable operation of all pixels of a display and includes a substrate, a scanning line formed on the substrate, a pixel electrode formed on the substrate, a first switching element which is switched on and off in accordance with a potential level of the scanning line, a second auxiliary switching element which is initially electrically isolated from the pixel electrode by a switchable link.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: February 21, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiko Akiyama, Yutaka Nakai
  • Transmission liquid crystal display apparatus
    Patent number: 5159478
    Abstract: In a transmission liquid crystal display apparatus, light rays emitted from a light source and reflected from a mirror are collimated by a collimator lens and incident in a liquid cell structure through a polarization layer. The light rays emerged from the structure are transmitted through an another polarization layer and diffused by a diffusion layer. The diffusion light rays pass through a filter layer to a viewer.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: October 27, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiko Akiyama, Kouji Suzuki, Mamoru Tominaga