Patents by Inventor Tatsushi Koike

Tatsushi Koike 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: 7486369
    Abstract: A liquid crystal display having an injection hole post structures compatible with liquid crystal are formed in an area near an injection hole to prevent pollutants seeped from an end-sealing material from penetrating into a display area, thereby suppressing the occurrence of picture quality trouble which easily occurs in the display area. The liquid crystal display includes a first substrate 11 and a second substrate 12 which are disposed with a predetermined gap therebetween, in which liquid crystal is sealed in the gap.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: February 3, 2009
    Assignee: International Business Machines Corporation
    Inventors: Hiroshi Niwa, Hidefumi Yamashita, Tatsushi Koike, Yoshiaki Ohbayashi
  • Publication number: 20070211203
    Abstract: A liquid crystal display having an injection hole post structures compatible with liquid crystal are formed in an area near an injection hole to prevent pollutants seeped from an end-sealing material from penetrating into a display area, thereby suppressing the occurrence of picture quality trouble which easily occurs in the display area. The liquid crystal display includes a first substrate 11 and a second substrate 12 which are disposed with a predetermined gap therebetween, in which liquid crystal is sealed in the gap.
    Type: Application
    Filed: April 6, 2007
    Publication date: September 13, 2007
    Inventors: Hiroshi Niwa, Hidefumi Yamashita, Tatsushi Koike, Yoshiaki Ohbayashi
  • Patent number: 7202932
    Abstract: A liquid crystal display comprises an injection hole post structures compatible with liquid crystal formed in an area near an injection hole to prevent pollutants seeped from an end-sealing material from penetrating into a display area, thereby suppressing the deterioration of picture quality in the display area. The liquid crystal display comprises a first substrate and a second substrate having a predetermined gap therebetween. Liquid crystal is sealed in the gap. The liquid crystal display comprises post structures for controlling the gap, and a sealing material provided outside the display area for sealing the liquid crystal in the gap, and forming the open injection hole for injecting the liquid crystal therethrough. The end-sealing material seals the injection hole after the liquid crystal is sealed. Injection hole post structures are provided in the area near the injection hole, for dividing the injection hole into a plurality of portions.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: April 10, 2007
    Assignee: International Business Machines Corporation
    Inventors: Hiroshi Niwa, Hidefumi Yamashita, Tatsushi Koike, Yoshiaki Ohbayashi
  • Patent number: 7088418
    Abstract: The present invention provides a liquid crystal display device having a narrow frame, which is capable of effectively removing a defective display owing to entering of a seal member to a display area. More specifically, the present invention is directed to a liquid crystal display device comprising first and second substrates 1 and 2 disposed at a predetermined gap d1; a liquid crystal sealed in the gap d1; a seal member 4 provided at the gap d1 between the first and second substrates 1 and 2 and outside a display area 3, the seal member 4 being for sealing the liquid crystal; and a wall-like structure 5 provided outside the display area 3 and inside the seal member 4, the wall-like structure 5 being made of a material different from that of the seal member 4 and composed of a plurality of rows.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: August 8, 2006
    Assignee: International Business Machines Corporation
    Inventors: Hidefumi Yamashita, Michikazu Noguchi, Taroh Hasumi, Tatsushi Koike
  • Publication number: 20010033357
    Abstract: A liquid crystal display having an injection hole post structures compatible with liquid crystal are formed in an area near an injection hole to prevent pollutants seeped from an end-sealing material from penetrating into a display area, thereby suppressing the occurrence of picture quality trouble which easily occurs in the display area. The liquid crystal display includes a first substrate 11 and a second substrate 12 which are disposed with a predetermined gap therebetween, in which liquid crystal is sealed in the gap.
    Type: Application
    Filed: January 23, 2001
    Publication date: October 25, 2001
    Inventors: Hiroshi Niwa, Hidefumi Yamashita, Tatsushi Koike, Yoshiaki Ohbayashi
  • Patent number: 5596342
    Abstract: To prevent the damage of a display device by static electricity and to drive the display device with low voltage, on a transparent substrate of a liquid crystal display, two short circuit wires are provided, connected via a resistance. Each of the data lines is connected to the one short circuit wire via a first switching circuit, whereas each of the gate lines is connected to the other short circuit wire via a second switching circuit. A switching circuit is turned on when the potential difference between a data line and the one short circuit wire or the potential difference between a gate line and the second short circuit wire exceeds a predetermined value. When images are displayed on a liquid crystal display, the average voltage applied to each of data lines is applied to the first short circuit wire and the average voltage of voltages applied to each gate line is applied to the second short circuit wire to turn on the switching circuits.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: January 21, 1997
    Assignee: International Business Machines Corporation
    Inventors: Mitsuru Ikezaki, Shinichi Kimura, Tatsushi Koike