Patents by Inventor Kohji Ohgata

Kohji Ohgata 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).

  • Fabrication process of a liquid crystal display device with improved yield
    Patent number: 6156662
    Abstract: A method of fabricating a liquid crystal display device includes the step of removing a porous anodic oxide film selectively with respect to a barrier-type anodic oxide film covering a gate electrode pattern of a thin-film transistor, wherein the step of removing the porous anodic oxide film is conducted after the step of disconnecting a bridging conductor pattern used for supplying electric current at the time of anodic oxidation process of the gate electrode.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: December 5, 2000
    Assignee: Fujitsu Limited
    Inventors: Tatsuya Ohori, Tamotsu Wada, Kohji Ohgata, Tatsuya Kakehi, Ken-ichi Yanai
  • Method of manufacturing thin film transistors in a liquid crystal display
    Patent number: 5518940
    Abstract: A method of manufacturing a semiconductor device according to the present invention includes a process of introducing impurities into a semiconductor layer with a gate electrode and a resist film as a mask after a resist film is formed on the top and the side of the gate electrode by soaking the gate electrode on a semiconductor layer in an electrolyte containing resist and applying voltage to the gate electrode.
    Type: Grant
    Filed: January 5, 1995
    Date of Patent: May 21, 1996
    Assignee: Fujitsu Limited
    Inventors: Mari Hodate, Norihisa Matsumoto, Kohji Ohgata, Tamotsu Wada, Ken-iti Yanai, Ken-ichi Oki, Yasuyoshi Mishima, Michiko Takei, Tatsuya Kakehi, Masahiro Okabe