Patents by Inventor Takako Sugawara

Takako Sugawara 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 apparatus having gap adjusting means under the sealing region
    Patent number: 5691793
    Abstract: An object is to provide a liquid crystal display apparatus with an equal gap between two substrates so as to improve display image quality and display contrast. To accomplish this object, substrate gap adjusting region 33 or substrate gap adjusting layers 21, 22, 25, 27, 29, and 31 are formed so that the substrate gap in a region extending from a display region having pixel electrodes 7 to a driver circuit 11 is kept equal to the substrate gap in a region extending from the display region to a driver circuit 15. Thus, the gap between the two opposed substrates forming liquid crystal cells can be kept equal in any position.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: November 25, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Watanabe, Hiroki Nakamura, Takako Sugawara
  • Liquid crystal dispaly apparatus with gap adjusting layers located between the display region and driver circuits
    Patent number: 5504601
    Abstract: An object is to provide a liquid crystal display apparatus with an equal gap between two substrates so as to improve display image quality and display contrast. To accomplish this object, substrate gap adjusting region 33 or substrate gap adjusting layers 21, 22, 25, 27, 29, and 31 are formed so that the substrate gap in a region extending from a display region having pixel electrodes 7 to a driver circuit 11 is kept equal to the substrate gap in a region extending from the display region to a driver circuit 15. Thus, the gap between the two opposed substrates forming liquid crystal cells can be kept equal in any position.
    Type: Grant
    Filed: July 13, 1994
    Date of Patent: April 2, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Watanabe, Hiroki Nakamura, Takako Sugawara