Patents by Inventor Teruhisa Nakagawa

Teruhisa Nakagawa 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: 11422422
    Abstract: A liquid crystal display panel, comprising: a plurality of source lines extending in a first direction, and including a first source line and a second source line; a plurality of gate lines extending in a second direction different from the first direction, and crossing the plurality of source lines; and a plurality of pixel units defined by the plurality of source lines and the plurality of gate lines, in which a plurality of transistors and a plurality of pixel electrode are disposed, respectively; the first source line and the second source line are respectively connected to two adjacent rows of the pixel unit; wherein the first source line comprises a first line segment disposed on a first wiring layer; the second source line comprises a second line segment, and the second line segment is disposed on a second wiring layer different from the first wiring layer.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: August 23, 2022
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 11398503
    Abstract: A display device, comprising: a first pixel row including a first pixel electrode and a second pixel electrode that are arranged in a first direction; a second pixel row; a third pixel row; a first source line and a second source line that extend in a second direction between the first pixel electrode and the second pixel electrode; a first gate line that extends in the first direction between the first pixel row and the second pixel row; a second gate line that extends in the first direction between the second pixel row and the third pixel row; a first end connection wiring that connects the first gate line to the second gate line at an end portion of the second pixel row; and one or more first cross connection wirings that transverse the second pixel row and connect the first gate line to the second gate line.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: July 26, 2022
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 11385513
    Abstract: A liquid crystal display device comprising: a first liquid crystal display panel; and a second liquid crystal display panel opposed to the first liquid crystal display panel, wherein each of the first liquid crystal display panel and the second liquid crystal display panel includes a video signal line, a scanning line, a transistor provided in each pixel, and a pixel electrode provided in each pixel, and at least one of the video signal line, the scanning line, a semiconductor layer of the transistor, and the pixel electrode is patterned in an identical shape in the first liquid crystal display panel and the second liquid crystal display panel.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: July 12, 2022
    Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PASONA KNOWLEDGE PARTNER INC.
    Inventor: Teruhisa Nakagawa
  • Patent number: 11340500
    Abstract: A liquid crystal display device, comprising: a first substrate; a second substrate disposed opposite to the first substrate; a liquid crystal layer; and a spacer, wherein the first substrate includes a first pixel row, a second pixel row, a first source line and a second source line that extend in the second direction, a first gate line that extends in the first direction between the first pixel row and the second pixel row, a first thin film transistor to which the first source line, and the first gate line are electrically connected, and a second thin film transistor to which the second source line, and the first gate line are electrically connected, and the spacer is disposed so as to overlap with at least a portion of the first thin film transistor and at least a portion of the second thin film transistor in plan view.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: May 24, 2022
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 11333935
    Abstract: A liquid crystal display panel having a plurality of pixels arrayed in a matrix, the liquid crystal display panel comprising: a plurality of first signal lines extending in a row direction or a column direction; a transistor provided in each of the plurality of pixels; and a pixel electrode provided in each of the plurality of pixels and connected to the first signal line corresponding to the pixel via the transistor corresponding to the pixel, wherein, in each of the plurality of pixels, the pixel electrode includes a first pixel electrode and a second pixel electrode that are separated across the first signal line corresponding to the pixel.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: May 17, 2022
    Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PASONA KNOWLEDGE PARTNER INC.
    Inventor: Teruhisa Nakagawa
  • Patent number: 11275283
    Abstract: A display device comprising: a first pixel row including a first pixel electrode and a second pixel electrode arranged in a first direction; a second pixel row including a third pixel electrode and a fourth pixel electrode arranged in the first direction; a third pixel row including a fifth pixel electrode and a sixth pixel electrode arranged in the first direction; a first source line and a second source line extending in the second direction between the first pixel electrode and the second pixel electrode; a first gate line extending in the first direction between the first pixel row and the second pixel row; a second gate line extending in the first direction between the second pixel row and the third pixel row; and a gate lead line extending in the second direction and connected to the first gate line and the second gate line.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: March 15, 2022
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 11211025
    Abstract: A liquid crystal display panel, which includes: a plurality of pixels arranged in a row direction and a column direction, the pixel comprising a transistor; a plurality of data lines extending in the column direction, and including a first data line and a second data line; and a plurality of scan lines extending in the row direction, and crossing the plurality of data lines. The first data line and the second data line are disposed between two adjacent pixel columns, and partially overlap in a thickness direction of the liquid crystal display panel.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: December 28, 2021
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 11187951
    Abstract: A display panel includes multiple pairs of scan lines extending in a first direction, multiple data lines extending in a second direction transverse to the first direction, and multiple connection lines extending in the second direction. For each pair of scan lines, the scan lines are provided with the same electrical signal. The data lines cooperate with the scan lines to define a plurality of pixel regions in such a way that two of the data lines are interposed between two of the pixel regions that are immediately adjacent to each other in the first direction in plan view. Each connection line is electrically connected to a corresponding pair of scan lines.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: November 30, 2021
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 11163189
    Abstract: A display device comprises: a thin film transistor substrate; a counter substrate disposed to be opposed to the thin film transistor substrate; and a plurality of spacers protruding from the counter substrate toward the thin film transistor substrate, wherein the counter substrate includes: a black matrix including a first opening and a second opening that are adjacent to each other in a first direction; a first color filter being disposed while overlapping with the first opening and the second opening in planar view; and a second color filter being disposed while overlapping with at least a part of a region between the first opening and the second opening in planar view, and a first spacer included in the plurality of spacers overlaps with the second color filter between the first opening and the second opening in planar view.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: November 2, 2021
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takashi Mibu, Teruhisa Nakagawa
  • Patent number: 11150526
    Abstract: A display device includes a first substrate formed with a first gate line, a first source line, a first thin film transistor, and a first light shielding unit; a second substrate disposed opposite to the first substrate; and a first liquid crystal layer disposed between the first substrate and the second substrate. The first light shielding unit is disposed between the first thin film transistor and the first liquid crystal layer, and overlaps at least a part of a first channel region of the first thin film transistor in planar view.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: October 19, 2021
    Assignees: Panasonic Liquid Crystal Display Co., Ltd., Pasona Knowledge Partner Inc.
    Inventors: Teruhisa Nakagawa, Daisuke Kajita
  • Patent number: 11119368
    Abstract: A liquid crystal display panel having a plurality of pixels arrayed in a matrix, the liquid crystal display panel comprising: a plurality of first signal lines; a transistor provided in each of the plurality of pixels; and a pixel electrode provided in each of the plurality of pixels, wherein, in each of the plurality of pixels, the pixel electrode includes a first pixel electrode and a second pixel electrode that are separated across the first signal line corresponding to the pixel and a bridge electrode that extends over the first signal line and connects the first pixel electrode and the second pixel electrode, the first pixel electrode has a plurality of first line electrodes extending in a first direction, and the second pixel electrode has a plurality of second line electrodes extending in a second direction different from the first direction.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: September 14, 2021
    Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PASONA KNOWLEDGE PARTNER INC.
    Inventor: Teruhisa Nakagawa
  • Publication number: 20210223652
    Abstract: A liquid crystal display panel, comprising: a plurality of source lines extending in a first direction, and including a first source line and a second source line; a plurality of gate lines extending in a second direction different from the first direction, and crossing the plurality of source lines; and a plurality of pixel units defined by the plurality of source lines and the plurality of gate lines, in which a plurality of transistors and a plurality of pixel electrode are disposed, respectively; the first source line and the second source line are respectively connected to two adjacent rows of the pixel unit; wherein the first source line comprises a first line segment disposed on a first wiring layer; the second source line comprises a second line segment, and the second line segment is disposed on a second wiring layer different from the first wiring layer.
    Type: Application
    Filed: February 20, 2020
    Publication date: July 22, 2021
    Applicant: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Teruhisa Nakagawa
  • Publication number: 20210223651
    Abstract: A display panel includes multiple pairs of scan lines extending in a first direction, multiple data lines extending in a second direction transverse to the first direction, and multiple connection lines extending in the second direction. For each pair of scan lines, the scan lines are provided with the same electrical signal. The data lines cooperate with the scan lines to define a plurality of pixel regions in such a way that two of the data lines are interposed between two of the pixel regions that are immediately adjacent to each other in the first direction in plan view. Each connection line is electrically connected to a corresponding pair of scan lines.
    Type: Application
    Filed: February 18, 2020
    Publication date: July 22, 2021
    Applicant: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Teruhisa Nakagawa
  • Publication number: 20210225317
    Abstract: A liquid crystal display panel, which includes: a plurality of pixels arranged in a row direction and a column direction, the pixel comprising a transistor; a plurality of data lines extending in the column direction, and including a first data line and a second data line; and a plurality of scan lines extending in the row direction, and crossing the plurality of data lines. The first data line and the second data line are disposed between two adjacent pixel columns, and partially overlap in a thickness direction of the liquid crystal display panel.
    Type: Application
    Filed: February 19, 2020
    Publication date: July 22, 2021
    Applicant: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Teruhisa Nakagawa
  • Patent number: 10996531
    Abstract: A display device includes a display area, a source driver, a gate driver, a first substrate, a second substrate, and a liquid crystal layer. The liquid crystal layer is disposed between the first substrate and the second substrate. The second substrate includes source lines, gate lines, gate lead-out lines, and bridge lines. The source lines are electrically connected to the source driver. The gate lead-out lines electrically connect the gate driver to the gate lines. The bridge lines connect pairs of the gate lead-out lines that are adjacent in the second direction. At least one of the gate lines is electrically connected to the gate driver via at least two of the gate lead-out lines and one of the bridge lines.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: May 4, 2021
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Asuka Higashi, Teruhisa Nakagawa
  • Patent number: 10942406
    Abstract: A thin film transistor substrate including a pixel region constructed with pixels, includes: gate signal lines provided in the pixel region and extending in a first direction; gate lead-out lines provided in the pixel region and extending in a second direction; a thin film transistor and a pixel electrode provided in each of the pixels; a common electrode provided across the pixels; and a common line electrically connected to the common electrode. The gate signal lines and the gate lead-out lines are connected to each other through a first contact hole at at least one of a plurality of intersections of the gate signal lines and the gate lead-out lines, and the common line covers the first contact hole in planar view of the thin film transistor substrate.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: March 9, 2021
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Teruhisa Nakagawa, Tetsuya Kawamura
  • Patent number: 10845661
    Abstract: A liquid crystal display device comprises: a plurality of pixels arranged in a first direction and a second direction intersecting the first direction, the plurality of pixels including a first pixel, a second pixel, and a third pixel; a plurality of subpixel electrodes arranged in each of the plurality of pixels in the second direction; a plurality of source lines extending in the first direction and crossing a space between the plurality of subpixel electrodes and a space between the first pixel and the second pixel; a first gate lead line extending in the first direction and crossing a space between the first pixel and the second pixel; and a first gate line extending in the second direction, crossing a space between the first pixel and the third pixel, and is electrically connected to the first gate lead line.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: November 24, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Teruhisa Nakagawa
  • Patent number: 10795202
    Abstract: Techniques of effective and continuous signal transmission in a display device are described. Techniques of the present subject matter allow lead-out lines of the display device to provide continuous transmittance of signals to data/gate lines. In an example, the display device may include a plurality of pixels arranged in a first direction and a second direction in a matrix arrangement, and a plurality of first lines extending in the first direction and a plurality of second lines extending in the second direction. Further, the display device may also include a plurality of lead-out lines extending in the first direction, such that, a lead-out line from the plurality of lead-out line overlaps a second line from the plurality of second lines to form an overlap region, where, the lead-out lines may be electrically connected to the second lines through a plurality of contact points in the overlap region.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: October 6, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Teruhisa Nakagawa
  • Publication number: 20200310208
    Abstract: A display device comprising: a first pixel row including a first pixel electrode and a second pixel electrode arranged in a first direction; a second pixel row including a third pixel electrode and a fourth pixel electrode arranged in the first direction; a third pixel row including a fifth pixel electrode and a sixth pixel electrode arranged in the first direction; a first source line and a second source line extending in the second direction between the first pixel electrode and the second pixel electrode; a first gate line extending in the first direction between the first pixel row and the second pixel row; a second gate line extending in the first direction between the second pixel row and the third pixel row; and a gate lead line extending in the second direction and connected to the first gate line and the second gate line.
    Type: Application
    Filed: January 30, 2020
    Publication date: October 1, 2020
    Inventor: Teruhisa NAKAGAWA
  • Publication number: 20200310174
    Abstract: A liquid crystal display device, comprising: a first substrate; a second substrate disposed opposite to the first substrate; a liquid crystal layer; and a spacer, wherein the first substrate includes a first pixel row, a second pixel row, a first source line and a second source line that extend in the second direction, a first gate line that extends in the first direction between the first pixel row and the second pixel row, a first thin film transistor to which the first source line, and the first gate line are electrically connected, and a second thin film transistor to which the second source line, and the first gate line are electrically connected, and the spacer is disposed so as to overlap with at least a portion of the first thin film transistor and at least a portion of the second thin film transistor in plan view.
    Type: Application
    Filed: January 29, 2020
    Publication date: October 1, 2020
    Inventor: Teruhisa NAKAGAWA