Patents by Inventor Masataka Natori

Masataka Natori 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: 7551260
    Abstract: A liquid crystal display device is provided to prevent gas bubbles from being generated due to the contact of an inspection probe. An insulating film composed of a gate insulating film and a protection film is formed on a gate wire and wire inspection terminal, and is partially removed from an upper surface of the wire inspection terminal to form a concave portion exposing the top surface of the wire inspection terminal. A transparent conductive film made of ITO is formed on the insulating film, including the concave portion on the wire inspection terminal. The transparent conductive film is electrically connected with the wire inspection terminal at the concave portion, and formed extending onto the gate insulating film and protection film on the opposite side of a scanning wire of the wire inspection terminal. Disconnection inspection is performed using the extending portion as a contact portion with an inspection probe.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: June 23, 2009
    Assignee: Hitachi Displays, Ltd.
    Inventors: Osamu Nagashima, Kurando Shinba, Eisuke Hatakeyama, Hikaru Ito, Masataka Natori
  • Publication number: 20090061722
    Abstract: (Object) To provide a manufacturing method for a display device according to which a hole is created in a pair of substrates using a water jet without causing damage.
    Type: Application
    Filed: August 26, 2008
    Publication date: March 5, 2009
    Inventors: Masataka Natori, Osamu Nagashima
  • Publication number: 20090051636
    Abstract: The present invention is directed to a display device which can display an image in any region within the display region without affecting the configuration of pixels, even when there is a non-display region.
    Type: Application
    Filed: August 14, 2008
    Publication date: February 26, 2009
    Inventor: Masataka Natori
  • Publication number: 20080062372
    Abstract: A liquid crystal display device is provided to prevent gas bubbles from being generated due to the contact of an inspection probe. An insulating film composed of a gate insulating film and a protection film is formed on a gate wire and wire inspection terminal, and is partially removed from an upper surface of the wire inspection terminal to form a concave portion exposing the top surface of the wire inspection terminal. A transparent conductive film made of ITO is formed on the insulating film, including the concave portion on the wire inspection terminal. The transparent conductive film is electrically connected with the wire inspection terminal at the concave portion, and formed extending onto the gate insulating film and protection film on the opposite side of a scanning wire of the wire inspection terminal. Disconnection inspection is performed using the extending portion as a contact portion with an inspection probe.
    Type: Application
    Filed: September 11, 2007
    Publication date: March 13, 2008
    Inventors: Osamu Nagashima, Kurando Shinba, Eisuke Hatakeyama, Hikaru Ito, Masataka Natori
  • Patent number: 6985131
    Abstract: In a liquid crystal display device having the so-called side-edge type backlight system which comprises: a liquid crystal display panel; a light guide plate being disposed opposite to a main surface of the liquid crystal panel; and a linear lamp being disposed along one of sides of the light guide plate, the present invention provides a plurality of grooves at a corner area of an edge of the light guide plate along which the linear lamp is disposed so that the plurality of grooves are extended in a direction slanted to the edge of the light guide plate. In accordance with this structural feature, the present invention enables a high quality image display performance of the liquid crystal display panel by suppressing the display irregularity appearing therein effectively.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: January 10, 2006
    Assignees: Hitachi, Ltd., Hitachi Electronic Devices Co., Ltd.
    Inventors: Tomoaki Kawada, Akio Tezuka, Hisao Hirayama, Toshitsugu Miyawaki, Masataka Natori
  • Patent number: 6504585
    Abstract: A liquid crystal display device includes first and second gate signal line formed on a first insulating substrate and arranged adjacent to one another, a terminal electrically connected to the first gate signal line, first and second thin-film transistors, a first pixel electrode electrically connected to an electrode of the first thin-film transistor, a second pixel electrode electrically connected to an electrode of the second thin-film transistor, a first and second video signal lines, a second insulating substrate which is transparent and superposed on the first insulating substrate, a transparent common electrode, and liquid crystals provided between the common electrode and the first and second pixel electrodes. A first light-shielding film is formed on the second insulating substrate and covers peripheries of the first and second pixel electrodes, and second light-shielding films are formed on the first insulating substrate.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: January 7, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Ohkawara, Takanori Nakayama, Takeshi Tanaka, Hikaru Itoh, Tatsuo Kamei, Tetsuya Kawamura, Masataka Natori, Hidetaka Hakoda
  • Patent number: 6388719
    Abstract: A liquid crystal display device can readily achieve uniformization of the threshold voltages of individual thin film transistors in spite of its simple construction. The liquid crystal display device includes gate signal lines juxtaposed in one direction, drain signal lines juxtaposed to intersect with the gate signal lines, thin film transistors which are respectively formed in areas each surrounded by the gate signal lines and the drain signal lines and are driven by supply of scanning signals from the gate signal lines, pixel electrodes to which video signals from the drain signal lines are to be supplied via the respective thin film transistors, a first terminal for applying voltages to the respective gate signal lines via diodes, and a second terminal for applying voltages to the respective drain signal lines via diodes.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: May 14, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Kuniyuki Matsunaga, Kazuya Nakamura, Hikaru Itou, Masataka Natori, Kimitoshi Oogiichi, Takanori Nakayama, Hitoshi Komeno, Hiroshi Ookawara
  • Publication number: 20020030650
    Abstract: In a liquid crystal display device having the so-called side-edge type backlight system which comprises: a liquid crystal display panel; a light guide plate being disposed opposite to a main surface of the liquid crystal panel; and a linear lamp being disposed along one of sides of the light guide plate, the present invention provides a plurality of grooves at a corner area of an edge of the light guide plate along which the linear lamp is disposed so that the plurality of grooves are extended in a direction slanted to the edge of the light guide plate. In accordance with this structural feature, the present invention enables a high quality image display performance of the liquid crystal display panel by suppressing the display irregularity appearing therein effectively.
    Type: Application
    Filed: July 24, 2001
    Publication date: March 14, 2002
    Applicant: Hitachi,Ltd.
    Inventors: Tomoaki Kawada, Akio Tezuka, Hisao Hirayama, Toshitsugu Miyawaki, Masataka Natori
  • Publication number: 20010012076
    Abstract: A liquid crystal display device having a first gate signal line, a capacity line, a terminal, first and second thin-film transistors, a first pixel electrode, a second pixel electrode, a first video signal line, and a second video signal line. A channel length and a channel width of the second thin-film transistor are substantially equal to a channel length and the channel width of the first thin-film transistor. The first and second pixel electrodes are partly superposed on the capacity line via an insulating film, and an area where the second pixel electrode is superposed on the capacity line is selected to be smaller than an area where the first pixel electrode is superposed on the capacity line.
    Type: Application
    Filed: March 16, 2001
    Publication date: August 9, 2001
    Inventors: Hiroshi Ohkawara, Takanori Nakayama, Takeshi Tanaka, Hikaru Itoh, Tatsuo Kamei, Tetsuya Kawamura, Masataka Natori, Hidetaka Hakoda
  • Patent number: 6249325
    Abstract: A liquid crystal display device has gate signal lines extending in the x-direction and arranged in the y-direction, and drain signal lines extending in the y-direction and arranged in the x-direction on the surface of the liquid crystal side of the one transparent substrate between a pair of transparent substrates opposed to each other via liquid crystals. A thin-film transistor is fumed on by a scanning signal from a gate signal line, and a pixel electrode will be supplied with a video signal from the drain signal line via the thin-film transistor that is fumed on in each of the regions surrounded by the signal lines. The thin-film transistor is of the MIS type, and the capacity between the gate electrode and the source electrode thereof is small on the input terminal side of the gate signal line and increases in a direction toward the end of the gate signal line, thereby to suppress the occurrence of flickering.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: June 19, 2001
    Assignee: Hitach, Ltd.
    Inventors: Hiroshi Ohkawara, Takanori Nakayama, Takeshi Tanaka, Hikaru Itoh, Tatsuo Kamei, Tetsuya Kawamura, Masataka Natori, Hidetaka Hakoda
  • Patent number: 5748179
    Abstract: A liquid crystal display device is provided which reduces the resistance of input wires disposed between a flexible board and driving ICs mounted in a flip-chip style, and enhances resistance against electrocorrosion of input terminals thereof. The liquid crystal display device includes two transparent insulating substrates (SUB1, SUB2) confronting each other through a liquid crystal layer, plural liquid crystal driving circuits (ICs) mounted in a flip-chip style on a surface of one of the substrates located at the side of the liquid crystal layer, a flexible board (FPC) for inputting a signal to each of the liquid crystal driving circuits, and plural input wires (Td) provided on the surface of the one substrate at the side of the liquid crystal layer to connect output terminals of the flexible board to input terminals of the liquid crystal driving circuits.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: May 5, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Hikaru Ito, Masataka Natori, Masahiko Suzuki, Kimitoshi Ohgiichi, Kuniyuki Matsunaga, Junichi Ohwada, Masumi Sasuga, Shiro Ueda
  • Patent number: 5748267
    Abstract: A liquid crystal display capable of accommodating a common gate line in a proper position during the manufacture thereof has two transparent substrates opposed across a liquid crystal; a set of parallel gate lines extending in an x-direction on the surface of one of the transparent substrates, which faces the liquid crystal; a set of parallel drain lines extending in the y-direction on the surface and being insulated from the gate lines; and a gate scanning driver circuit connected with the individual gate lines outside of the display region in which the gate line set and the drain line set intersect. The common gate line is formed over a peripheral surface portion of the one transparent substrate, which surface portion is to be cut off at a subsequent manufacturing step, and is mounted on a region opposite to the gate scanning driver circuit on the other side of the display region therefrom for connecting the individual gate lines of the gate line set in common.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: May 5, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Masataka Natori, Shunichi Kumaoka, Shiro Ueda