Patents by Inventor Akiyoshi Kouya

Akiyoshi Kouya 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: 6811458
    Abstract: An LCD (Liquid Crystal Display) manufacturing method includes: a step of forming a columnar spacer for maintaining a gap between a TFT (Thin Film Transistor) substrate and a CF (Color Filter) substrate into which a liquid crystal is to be injected; and a subsequent step of performing under-pressure hole sealing processing which determines the gap finally, as applying an under-pressure hole sealing load value of 0.15-0.60 kg/cm2.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: November 2, 2004
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Akiyoshi Kouya
  • Patent number: 6791656
    Abstract: A liquid crystal display panel capable of avoiding display unevenness. The liquid crystal display panel is manufactured by a method comprising: preparing a pair of polarizer films each having at least a polyvinyl alcohol layer and a triacetyle cellulose layer; preparing a liquid crystal substrate assembly which comprises a first glass substrate and a second glass substrate and a liquid crystal material disposed between said first glass substrate and said second glass substrate; heating said polarizer films at a predetermined temperature for a predetermined time in a first heat treatment process; and sticking the polarizer films on the first and second glass substrates, after the first heat treatment process. The method may further comprises, after sticking the polarizer films on the first and second glass substrates, heating the liquid crystal substrate assembly in a second heat treatment process.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: September 14, 2004
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Akiyoshi Kouya
  • Publication number: 20030133058
    Abstract: A liquid crystal display panel capable of avoiding display unevenness. The liquid crystal display panel is manufactured by a method comprising: preparing a pair of polarizer films each having at least a polyvinyl alcohol layer-and a triacetyle cellulose layer; preparing a liquid crystal substrate assembly which comprises a first glass substrate and a second glass substrate and a liquid crystal material disposed between said first glass substrate and said second glass substrate; heating said polarizer films at a predetermined temperature for a predetermined time in a first heat treatment process; and sticking the polarizer films on the first and second glass substrates, after the first heat treatment process. The method may further comprises, after sticking the polarizer films on the first and second glass substrates, heating the liquid crystal substrate assembly in a second heat treatment process.
    Type: Application
    Filed: January 24, 2003
    Publication date: July 17, 2003
    Applicant: NEC Corporation
    Inventor: Akiyoshi Kouya
  • Patent number: 6552763
    Abstract: A liquid crystal display panel capable of avoiding display unevenness. The liquid crystal display panel is manufactured by a method comprising: preparing a pair of polarizer films each having at least a polyvinyl alcohol layer and a triacetyle cellulose layer; preparing a liquid crystal substrate assembly which comprises a first glass substrate and a second glass substrate and a liquid crystal material disposed between said first glass substrate and said second glass substrate; heating said polarizer films at a predetermined temperature for a predetermined time in a first heat treatment process; and sticking the polarizer films on the first and second glass substrates, after the first heat treatment process. The method may further comprises, after sticking the polarizer films on the first and second glass substrates, heating the liquid crystal substrate assembly in a second heat treatment process.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: April 22, 2003
    Assignee: NEC Corporation
    Inventor: Akiyoshi Kouya
  • Publication number: 20030002004
    Abstract: An LCD (Liquid Crystal Display) manufacturing method includes: a step of forming a columnar spacer for maintaining a gap between a TFT (Thin Film Transistor) substrate and a CF (Color Filter) substrate into which a liquid crystal is to be injected; and a subsequent step of performing under-pressure hole sealing processing which determines the gap finally, as applying an under-pressure hole sealing load value of 0.15-0.60 kg/cm2.
    Type: Application
    Filed: May 9, 2002
    Publication date: January 2, 2003
    Applicant: NEC Corporation
    Inventor: Akiyoshi Kouya