Patents by Inventor Katufumi Ohmuro

Katufumi Ohmuro 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: 5796458
    Abstract: An element division liquid crystal display device with a liquid crystal inserted between first and second plates having alignment films, respectively. The alignment film of at least the first plate includes a single layer of alignment material having a plurality of first and second adjacent domains A and B and is continuously rubbed in one direction through first and second minute domains A and B. A further treatment, different from a rubbing treatment, is effected to the single alignment layer so that a pretilt angle of the liquid crystal contacting the alignment layer at one of the first and second domains is different from the pretilt angle of the liquid crystal contacting the alignment layer at the other domain. The further treatment includes one of the steps of irradiating with UV light, changing the chemical components of the material of the alignment layer, heating or changing the precuring process.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: August 18, 1998
    Assignee: Fujitsu Limited
    Inventors: Yoshio Koike, Tsuyoshi Kamada, Syun Tsuyuki, Noriaki Furukawa, Shigeru Masuda, Satoshi Murata, Tadashi Hasegawa, Takashi Sasabayashi, Seiji Tanuma, Takatoshi Mayama, Katufumi Ohmuro