Patents by Inventor Takafumi Hashiguchi

Takafumi Hashiguchi 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: 6836301
    Abstract: The liquid crystal display of the present invention includes: a first insulating substrate as an array substrate; display pixels formed in such a manner as to be arranged in array like shape on the first insulating substrate, said display pixels having pixel electrodes electrically connected to each other; a counter substrate formed on a second insulating substrate on which common electrodes are formed; a liquid crystal layer interposed between the first insulating substrate and the second insulating substrate, the first insulating substrate and the second insulating substrate being bonded each other; a transfer electrode for supplying a common electrical potential to common electrodes on the second insulating substrate through a conductive material; wherein the transfer electrode is formed by patterning a conductive thin film that has been formed by the last conductive film forming process of the first insulating substrate; wherein a second conductive metal film, which has been formed in the second conductiv
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: December 28, 2004
    Assignee: Advanced Display Inc.
    Inventors: Satoshi Kohtaka, Takafumi Hashiguchi, Yukio Endo
  • Patent number: 6825907
    Abstract: The widths of those portions of a semiconductor layer 5 and a drain line 6a overlapping with it which cross an edge line of a gate electrode 2 are made smaller than the channel width of a thin-film transistor. With this measure, the overlap area of the gate electrode 2 and a drain electrode 6 is reduced. As a result, a variation of the above overlap area due to alignment errors in a photolithography apparatus used in patterning the gate lines 2, the drain electrodes 6, and source electrodes 7 can be reduced and the frequency of occurrence of display defects can be decreased.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: November 30, 2004
    Assignee: Kabushiki Kaisha Advanced Display
    Inventors: Takafumi Hashiguchi, Takehisa Yamaguchi, Naoki Nakagawa
  • Publication number: 20040125318
    Abstract: The liquid crystal display of the present invention includes: a first insulating substrate as an array substrate; display pixels formed in such a manner as to be arranged in array like shape on the first insulating substrate, said display pixels having pixel electrodes electrically connected to each other; a counter substrate formed on a second insulating substrate on which common electrodes are formed; a liquid crystal layer interposed between the first insulating substrate and the second insulating substrate, the first insulating substrate and the second insulating substrate being bonded each other; a transfer electrode for supplying a common electrical potential to common electrodes on the second insulating substrate through a conductive material; wherein the transfer electrode is formed by patterning a conductive thin film that has been formed by the last conductive film forming process of the first insulating substrate; wherein a second conductive metal film, which has been formed in the second conductiv
    Type: Application
    Filed: December 17, 2003
    Publication date: July 1, 2004
    Applicant: ADVANCED DISPLAY INC.
    Inventors: Satoshi Kohtaka, Takafumi Hashiguchi, Yukio Endo
  • Patent number: 6690442
    Abstract: The liquid crystal display of the present invention includes: a first insulating substrate as an array substrate; display pixels formed in such a manner as to be arranged in array like shape on the first insulating substrate, said display pixels having pixel electrodes electrically connected to each other; a counter substrate formed on a second insulating substrate on which common electrodes are formed; a liquid crystal layer interposed between the first insulating substrate and the second insulating substrate, the first insulating substrate and the second insulating substrate being bonded each other; a transfer electrode for supplying a common electrical potential to common electrodes on the second insulating substrate through a conductive material; wherein the transfer electrode is formed by patterning a conductive thin film that has been formed by the last conductive film forming process of the first insulating substrate; wherein a second conductive metal film, which has been formed in the second conductiv
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: February 10, 2004
    Assignee: Advanced Display Inc.
    Inventors: Satoshi Kohtaka, Takafumi Hashiguchi, Yukio Endo
  • Publication number: 20030178628
    Abstract: A display apparatus according to the present invention is provided with a gate line 2 formed on an insulating substrate, a source line 13 intersecting with the gate line 2 with an insulating film in between, a source electrode 6 connected to the source line 13, a drain electrode 10 connected to a pixel electrode 9, a semiconductor layer 4 formed below the source electrode 6, the source line 13, and the drain electrode 10, a light-shielding pattern 12 configured below the semiconductor layer 4 lying below the source line 13, and a backlight emitting lights from a light source to the surface of the insulating substrate opposite to where pixels are formed. In this configuration, leakage current arisen in the semiconductor layer lying below the source line, the extending pattern of the drain electrode, and so on can be suppressed.
    Type: Application
    Filed: September 9, 2002
    Publication date: September 25, 2003
    Applicant: ADVANCED DISPLAY INC.
    Inventors: Hironori Aoki, Shigeaki Noumi, Takafumi Hashiguchi
  • Publication number: 20020113916
    Abstract: The widths of those portions of a semiconductor layer 5 and a drain line 6a overlapping with it which cross an edge line of a gate electrode 2 are made smaller than the channel width of a thin-film transistor. With this measure, the overlap area of the gate electrode 2 and a drain electrode 6 is reduced. As a result, a variation of the above overlap area due to alignment errors in a photolithography apparatus used in patterning the gate lines 2, the drain electrodes 6, and source electrodes 7 can be reduced and the frequency of occurrence of display defects can be decreased.
    Type: Application
    Filed: February 14, 2002
    Publication date: August 22, 2002
    Inventors: Takafumi Hashiguchi, Takehisa Yamaguchi, Naoki Nakagawa
  • Publication number: 20010030719
    Abstract: The liquid crystal display of the present invention comprising: a gate electrode line formed on an insulating substrate; a source electrode line including a source electrode intersected with said gate electrode line via an insulating film, a thin film transistor located in a vicinity of a portion in which said gate electrode line is intersected with said source electrode line; two drain electrode lines, each including two drain electrodes in said thin film transistor, said drain electrode line being connected with a pixel electrode; wherein said thin film transistor includes said two drain electrode lines located on both sides of said source electrode; said two drain electrodes being formed at a place where each end portion of said two drain electrode lines opposed to said source electrode is superposed with said gate electrode line.
    Type: Application
    Filed: April 12, 2001
    Publication date: October 18, 2001
    Applicant: ADVANCED DISPLAY INC.
    Inventors: Takehisa Yamaguchi, Takafumi Hashiguchi, Naoki Nakagawa, Satoshi Kohtaka
  • Patent number: 5987540
    Abstract: A serial data transfer circuit comprises a clock generator for generating at least one kind of clock signals requested by a plurality of transmission units and a plurality of reception units on the basis of a reference clock signal for generating the serial clock signals, first clock request signals and second clock request signals, and a clock selector for selecting the transmission unit and reception unit, which request serial clock signals, among the transmission units and reception units, on the basis of the first clock request signals and the second clock request signals, and supplying the serial clock signals requested by the selected transmission unit and reception unit to the selected transmission unit and reception unit.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: November 16, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Takafumi Hashiguchi