Patents by Inventor Seiyu Kuniyasu

Seiyu Kuniyasu 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).

  • Patent number: 5039185
    Abstract: A homeotropic liquid crystal display device compensated for the anisotropy of the homeotropically oriented nematic liquid crystal layer, by anisotropy compensating means comprising at least two anisotropic (e.g. uniaxial) films having their optic axes disposed to form a right angle in a plane parallel to the substrate to form an optically negative activity in the direction perpendicular to the substrate. This optically negative activity is so selected to compensate the positive optical anisotropy of the nematic liquid crystal when oriented homeotropically in the absence of electric field.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: August 13, 1991
    Assignees: Stanley Electric Co., Ltd., Tatsuo Uchida, Commissariat a l'Energie Atomique, Shingijutsu Kaihatsu Jigyodan
    Inventors: Tatsuo Uchida, Kazuo Ariga, Seiyu Kuniyasu