Patents by Inventor Satomi Nagasawa

Satomi Nagasawa 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 electro-optical device
    Patent number: 6380562
    Abstract: A number of parallel light-interrupting stripes are formed over the entire TFT substrate, and light-interrupting patterns that are isolated from each other are formed separately from the light-interrupting stripes. Light interruption along gate bus patterns is effected by the light-interrupting stripes, while light interruption along data bus patterns is effected by elongating branches from the gate bus patterns. Light interruption between the tip of each branch and a polysilicon drain is effected by the isolated light-interrupting pattern.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: April 30, 2002
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Michiko Takei, Tatsuya Ohori, Hongyong Zhang, Satomi Nagasawa
  • TFT LCD device with gate/data lines in interrupting patterns
    Patent number: 6181389
    Abstract: A number of parallel light-interrupting stripes are formed over the entire TFT substrate, and light-interrupting patterns that are isolated from each other are formed separately from the light-interrupting stripes. Light interruption along gate bus patterns is effected by the light-interrupting stripes, while light interruption along data bus patterns is effected by elongating branches from the gate bus patterns. Light interruption between the tip of each branch and a polysilicon drain is effected by the isolated light-interrupting pattern.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: January 30, 2001
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Michiko Takei, Tatsuya Ohori, Hongyong Zhang, Satomi Nagasawa