Patents by Inventor Mitsugu Katayama

Mitsugu Katayama 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 with substantially equal resistances for sets of terminal electrodes and inclined wiring electrodes
    Patent number: 5914763
    Abstract: A liquid crystal display including a plurality of parallel display electrodes wired over an electrode substrate, terminals for the display electrodes led out to the end portion of the electrode substrate and connected to TCPs, the terminals having pitches smaller than those of the display electrodes, and leadout wirings for connecting the display electrodes and the terminals. The leadout wirings each consist of a portion extending from a respective display electrode as it is, a portion extended from the respective terminals as it is, and almost parallel, inclined linear wiring that connects the two extended portions. The length of the two extended portions and the width of the inclined linear wiring are adjusted so that the wiring resistances of the individual leadout wirings are substantially equal.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: June 22, 1999
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Tatsuhisa Fujii, Mitsugu Katayama, Tomohide Ohira, Tatsuyuki Fumikura, Hitomi Madokoro
  • Liquid crystal display with color filters and sizes of inclined linear wiring and terminal electrodes adjusted for equal resistances
    Patent number: 5757450
    Abstract: An object of this invention is to make uniform the gap in the frame edge portion of the liquid crystal device and the wiring resistances and to improve the display quality and minimize the frame edge area to the limit. To achieve the above object, the liquid crystal display of this invention comprises a plurality of parallel display electrodes 40-n wired over the electrode substrate 311 (312); terminals 41-n for the electrodes 40-n led out to the end portion of the electrode substrate 311 (312) and connected to TCPs, the terminals 41-n having pitches smaller than those of the electrodes 40-n; and leadout wirings 331 (332) for connecting the electrodes 40-n and the terminals 41-n. The leadout wirings 331 (332) each consist of a portion extended from the respective electrode 40-n as it is, a portion extended from the respective terminals 41-n as it is, and almost parallel, inclined linear wiring 42-n that connects the two extended portions.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: May 26, 1998
    Assignees: Hitachi, Ltd., Hitachi Device Engineering, Co., Ltd.
    Inventors: Tatsuhisa Fujii, Mitsugu Katayama, Tomohide Ohira, Tatsuyuki Fumikura, Hitomi Madokoro
  • Liquid crystal display with substantially equal resistances for sets of terminal electrodes and inclined wiring electrodes
    Patent number: RE41324
    Abstract: A liquid crystal display including a plurality of parallel display electrodes wired over an electrode substance, terminals for the display electrodes led out to the end portion of the electrode substrate and connected to TCPs, the terminals having pitches smaller than those of the display electrodes, and leadout wirings for connecting the display electrodes and the terminals. The leadout wirings each consist of a portion extending from a respective display electrode as it is, a portion extended from the respective terminals as it is, and almost parallel, included linear wiring that connects the two extended portions. The length of the two extended portions and the width of the inclined linear wiring are adjusted so that the wiring resistances of the individual leadout wirings are substantially equal.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: May 11, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Tatsuhisa Fujii, Mitsugu Katayama, Tomohide Ohira, Tatsuyuki Fumikura, Hitomi Madokoro
  • Liquid crystal display with substantially equal resistances for sets of terminal electrodes and inclined wiring electrodes
    Patent number: RE42879
    Abstract: A liquid crystal display including a plurality of parallel display electrodes wired over an electrode substrate, terminals for the display electrodes led out to the end portion of the electrode substrate and connected to TCPs, the terminals having pitches smaller than those of the display electrodes, and leadout wirings for connecting the display electrodes and the terminals. The leadout wirings each consist of a portion extending from a respective display electrode as it is, a portion extended from the respective terminals as it is, and almost parallel, inclined linear wiring that connects the two extended portions. The length of the two extended portions and the width of the inclined linear wiring are adjusted so that the wiring resistances of the individual leadout wirings are substantially equal.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 1, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Tatsuhisa Fujii, Mitsugu Katayama, Tomohide Ohira, Tatsuyuki Fumikura, Hitomi Madokoro