Patents by Inventor Kentaro Agata

Kentaro Agata 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: 10586479
    Abstract: An inspection circuit is properly protected in a display device, which the driver IC is not on the terminal area. A liquid crystal display device comprising a TFT substrate having a display area, in which video signal lines are formed, and a terminal area; a counter substrate overlapping with the display area of the TFT substrate; the counter substrate and the TFT substrate are adhered by the seal material, the display area is formed in an area surrounded by the seal material; wherein the flexible wiring circuit substrate connects to the terminal area, the driver IC, which supplies video signals to the video signal lines, is not installed in the terminal area, the inspection circuit is formed between the display area and the terminal area, wherein the inspection circuit overlaps with the counter substrate in a plan view.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: March 10, 2020
    Assignee: Japan Display Inc.
    Inventors: Hiroyuki Abe, Kentaro Agata
  • Patent number: 10571769
    Abstract: It is possible to reduce a size of a lower frame region to ensure a wiring corrosion margin equivalent to that of a conventional technique. In a display device, a video signal wiring arranged in the lower frame region includes, in a region between a terminal section (terminal) and a video signal line, a first wiring formed on a first wiring layer and having one end connected to the terminal section to which a video signal line driving circuit is connected, a second wiring formed on a second wiring layer different from the first wiring layer and having one end connected to the other end of the first wiring, and a third wiring formed on the first wiring layer and having one end connected to the other end of the second wiring. The other end of the third wiring is connected to the video signal line via a fourth wiring formed on the second wiring layer, and the first wiring layer is formed on the side closer to an array substrate than to the second wiring layer.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: February 25, 2020
    Assignee: Japan Display Inc.
    Inventors: Hiroyuki Abe, Kentaro Agata
  • Publication number: 20190066556
    Abstract: An inspection circuit is properly protected in a display device, which the driver IC is not on the terminal area. A liquid crystal display device comprising a TFT substrate having a display area, in which video signal lines are formed, and a terminal area; a counter substrate overlapping with the display area of the TFT substrate; the counter substrate and the TFT substrate are adhered by the seal material, the display area is formed in an area surrounded by the seal material; wherein the flexible wiring circuit substrate connects to the terminal area, the driver IC, which supplies video signals to the video signal lines, is not installed in the terminal area, the inspection circuit is formed between the display area and the terminal area, wherein the inspection circuit overlaps with the counter substrate in a plan view.
    Type: Application
    Filed: August 17, 2018
    Publication date: February 28, 2019
    Applicant: Japan Display Inc
    Inventors: Hiroyuki ABE, Kentaro AGATA
  • Publication number: 20190011757
    Abstract: In an IPS-mode liquid crystal display device, the area of a terminal portion is decreased. A liquid crystal display device includes a TFT substrate and a counter substrate attached to the TFT substrate with a sealing material, and includes a display region and a terminal portion formed on the TFT substrate. A shielding transparent conductive film is formed on the outer side of the counter substrate. On the terminal portion, an earth pad formed with a transparent conductive film is formed on an organic passivation film. The shielding transparent conductive film is connected to the earth pad through a conductor. Below organic passivation film of the terminal portion, a wire is formed.
    Type: Application
    Filed: September 13, 2018
    Publication date: January 10, 2019
    Inventors: Hiroyuki Abe, Kentaro Agata, Masaki Murase, Kazune Matsumura
  • Patent number: 10101618
    Abstract: In an IPS-mode liquid crystal display device, the area of a terminal portion is decreased. A liquid crystal display device includes a TFT substrate and a counter substrate attached to the TFT substrate with a sealing material, and includes a display region and a terminal portion formed on the TFT substrate. A shielding transparent conductive film is formed on the outer side of the counter substrate. On the terminal portion, an earth pad formed with a transparent conductive film is formed on an organic passivation film. The shielding transparent conductive film is connected to the earth pad through a conductor. Below organic passivation film of the terminal portion, a wire is formed.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: October 16, 2018
    Assignee: Japan Display Inc.
    Inventors: Hiroyuki Abe, Kentaro Agata, Masaki Murase, Kazune Matsumura
  • Patent number: 10048552
    Abstract: This invention envisages flexible wiring substrate terminals serving to connect with the wires for preventing dielectric breakdown caused by static electricity during the manufacturing process, and reducing the number of the flexible wiring substrate terminals. On a mother TFT substrate, signal lines extend over each liquid crystal cell in a manner flanking a scribe line between the adjacent liquid crystal cells. The signal lines of each liquid crystal cell are connected with connecting lines striding the scribe line. This reduces the number of static electricity countermeasure wires extending from the flexible wiring substrate terminals of each liquid crystal cell. Once completed, the individual liquid crystal cells are separated from one another, with no adverse effects caused by the connecting lines.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: August 14, 2018
    Assignee: Japan Display Inc.
    Inventors: Tomonori Nishino, Syou Yanagisawa, Kentaro Agata, Hiroyuki Abe, Takayuki Suzuki
  • Patent number: 10042193
    Abstract: An object of the present invention is to protect exposed inspection pads with a conductive tape when the application of resin is ceased and to enhance the reliability of the inspection pads. A liquid crystal display device is provided with a transparent electrode formed on a superficial side of a CF board, a grounded electrode, an inspection pad and a switching device between the inspection pad and a signal line or a scanning line respectively formed in a terminal area a TFT board and a conductive tape that electrically connects the transparent electrode of the CF board, the grounded electrode and the inspection pad respectively of the TFT board.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: August 7, 2018
    Assignee: Japan Display Inc.
    Inventors: Tomonori Nishino, Syou Yanagisawa, Kentaro Agata, Nobuyuki Ishige
  • Publication number: 20180203318
    Abstract: It is possible to reduce a size of a lower frame region to ensure a wiring corrosion margin equivalent to that of a conventional technique. In a display device, a video signal wiring arranged in the lower frame region includes, in a region between a terminal section (terminal) and a video signal line, a first wiring formed on a first wiring layer and having one end connected to the terminal section to which a video signal line driving circuit is connected, a second wiring formed on a second wiring layer different from the first wiring layer and having one end connected to the other end of the first wiring, and a third wiring formed on the first wiring layer and having one end connected to the other end of the second wiring. The other end of the third wiring is connected to the video signal line via a fourth wiring formed on the second wiring layer, and the first wiring layer is formed on the side closer to an array substrate than to the second wiring layer.
    Type: Application
    Filed: December 6, 2017
    Publication date: July 19, 2018
    Applicant: Japan Display Inc.
    Inventors: Hiroyuki ABE, Kentaro AGATA
  • Patent number: 9954013
    Abstract: This invention aims at reducing the probability of short-circuiting between terminals in a display device in which an IC driver is connected by COG. Terminals for connection with the IC driver are formed in a terminal region of a TFT substrate (100). The terminals are each comprised of a terminal metal (60), a first through-bole formed in a first insulation film (107), a second through-hole formed in a second insulation film (109), a first ITO (20) formed in the first through-hole and being in contact with the terminal metal (60), and a second ITO (30) formed over the first ITO (20). The second ITO (30) is formed within an area where the second ITO is in contact with the first ITO but is not formed outside the second through-hole. This ensures that the distance between the ITOs of the adjacent terminals can be enlarged, whereby the probability of short-circuiting between the terminals can be lowered.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: April 24, 2018
    Assignee: Japan Display Inc.
    Inventors: Tomonori Nishino, Syou Yanagisawa, Kentaro Agata, Nobuyuki Ishige
  • Publication number: 20170363966
    Abstract: The invention provides a display device that allows formation of the boundary of exposure at an arbitrary position on its substrate. A display device includes: a display area; a terminal; and a wire formed between the display area and the terminal and connected to the terminal. The wire includes a first part, a second part, and a third part. The first part extends in a first direction. The second part and the third part extend in a direction different from the first direction. The first part is located between the second and third parts and includes a protruding portion protruding in a second direction perpendicular to the first direction.
    Type: Application
    Filed: June 7, 2017
    Publication date: December 21, 2017
    Inventors: Keita SASANUMA, Hideki KURIYAMA, Kohei HANASAKI, Syou YANAGISAWA, Kentaro AGATA
  • Publication number: 20170235182
    Abstract: In an IPS-mode liquid crystal display device, the area of a terminal portion is decreased. A liquid crystal display device includes a TFT substrate and a counter substrate attached to the TFT substrate with a sealing material, and includes a display region and a terminal portion formed on the TFT substrate. A shielding transparent conductive film is formed on the outer side of the counter substrate. On the terminal portion, an earth pad formed with a transparent conductive film is formed on an organic passivation film. The shielding transparent conductive film is connected to the earth pad through a conductor. Below organic passivation film of the terminal portion, a wire is formed.
    Type: Application
    Filed: February 8, 2017
    Publication date: August 17, 2017
    Inventors: Hiroyuki ABE, Kentaro AGATA, Masaki MURASE, Kazune MATSUMURA
  • Publication number: 20170219858
    Abstract: An object of the present invention is to protect exposed inspection pads with a conductive tape when the application of resin is ceased and to enhance the reliability of the inspection pads. A liquid crystal display device is provided with a transparent electrode formed on a superficial side of a CF board, a grounded electrode, an inspection pad and a switching device between the inspection pad and a signal line or a scanning line respectively formed in a terminal area a TFT board and a conductive tape that electrically connects the transparent electrode of the CF board, the grounded electrode and the inspection pad respectively of the TFT board.
    Type: Application
    Filed: April 21, 2017
    Publication date: August 3, 2017
    Inventors: Tomonori NISHINO, Syou YANAGISAWA, Kentaro AGATA, Nobuyuki ISHIGE
  • Patent number: 9690125
    Abstract: A display device includes a display area and a terminal area formed outside the display area. The display area has a plurality of scanning lines and a plurality of video signal lines that cross the scanning lines. The terminal area has a first terminal having a semiconductor chip connected thereto, a first line, a second line, and an inspection thin-film transistor. The inspection thin-film transistor has a gate electrode connected to the first line, a source electrode connected to the second line, and a drain electrode. The first terminal is connected to any of the plurality of scanning lines and the plurality of video signal lines.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: June 27, 2017
    Assignee: Japan Display Inc.
    Inventors: Syou Yanagisawa, Nobuyuki Ishige, Tomonori Nishino, Kentaro Agata
  • Patent number: 9664932
    Abstract: An object of the present invention is to protect exposed inspection pads with a conductive tape when the application of resin is ceased and to enhance the reliability of the inspection pads. A liquid crystal display device is provided with a transparent electrode formed on a superficial side of a CF board, a grounded electrode, an inspection pad and a switching device between the inspection pad and a signal line or a scanning line respectively formed in a terminal area a TFT board and a conductive tape that electrically connects the transparent electrode of the CF board, the grounded electrode and the inspection pad respectively of the TFT board.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 30, 2017
    Assignee: Japan Display Inc.
    Inventors: Tomonori Nishino, Syou Yanagisawa, Kentaro Agata, Nobuyuki Ishige
  • Patent number: 9618811
    Abstract: A multiple circuit board includes a board having a plurality of product regions respectively corresponding to a plurality of array boards and an out-of-product region, out-of-product wires provided in the out-of-product region, waveform wires electrically connected to the out-of-product wires and extending to depict waveforms to alternately pass inside and outside of the respective product regions, circuit elements provided in respective display regions of the plurality of product regions, scanning circuits provided adjacent to the respective display regions of the plurality of product regions, and a plurality of scanning lines extending from the scanning circuits to both sides in each of the product regions and connecting to the circuit elements at one side and connecting to the waveform wires inside the product region at the other side.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: April 11, 2017
    Assignee: Japan Display Inc.
    Inventor: Kentaro Agata
  • Publication number: 20160349581
    Abstract: This invention envisages flexible wiring substrate terminals serving to connect with the wires for preventing dielectric breakdown caused by static electricity during the manufacturing process, and reducing the number of the flexible wiring substrate terminals. On a mother TFT substrate, signal lines extend over each liquid crystal cell in a manner flanking a scribe line between the adjacent liquid crystal cells. The signal lines of each liquid crystal cell are connected with connecting lines striding the scribe line. This reduces the number of static electricity countermeasure wires extending from the flexible wiring substrate terminals of each liquid crystal cell. Once completed, the individual liquid crystal cells are separated from one another, with no adverse effects caused by the connecting lines.
    Type: Application
    Filed: August 11, 2016
    Publication date: December 1, 2016
    Inventors: Tomonori NISHINO, Syou YANAGISAWA, Kentaro AGATA, Hiroyuki ABE, Takayuki SUZUKI
  • Patent number: 9442336
    Abstract: This invention envisages having flexible wiring substrate terminals serving to connect with the wires for preventing dielectric breakdown caused by static electricity during the manufacturing process, and reducing the number of the flexible wiring substrate terminals. On a mother TFT substrate, signal lines extend over each liquid crystal cell in a manner flanking a scribe line between the adjacent liquid crystal cells. The signal lines of each liquid crystal cell are connected with connecting lines striding the scribe line. This reduces the number of static electricity countermeasure wires extending from the flexible wiring substrate terminals of each liquid crystal cell. Once completed, the individual liquid crystal cells are separated from one another, with no adverse effects caused by the connecting lines.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: September 13, 2016
    Assignee: Japan Display Inc.
    Inventors: Tomonori Nishino, Syou Yanagisawa, Kentaro Agata, Hiroyuki Abe, Takayuki Suzuki
  • Publication number: 20160238862
    Abstract: An object of the present invention is to protect exposed inspection pads with a conductive tape when the application of resin is ceased and to enhance the reliability of the inspection pads. A liquid crystal display device is provided with a transparent electrode formed on a superficial side of a CF board, a grounded electrode, an inspection pad and a switching device between the inspection pad and a signal line or a scanning line respectively formed in a terminal area a TFT board and a conductive tape that electrically connects the transparent electrode of the CF board, the grounded electrode and the inspection pad respectively of the TFT board.
    Type: Application
    Filed: April 26, 2016
    Publication date: August 18, 2016
    Inventors: Tomonori NISHINO, Syou YANAGISAWA, Kentaro AGATA, Nobuyuki ISHIGE
  • Publication number: 20160218122
    Abstract: This invention aims at reducing the probability of short-circuiting between terminals in a display device in which an IC driver is connected by COG. Terminals for connection with the IC driver are formed in a terminal region of a TFT substrate (100). The terminals are each comprised of a terminal metal (60), a first through-bole formed in a first insulation film (107), a second through-hole formed in a second insulation film (109), a first ITO (20) formed in the first through-hole and being in contact with the terminal metal (60), and a second ITO (30) formed over the first ITO (20). The second ITO (30) is formed within an area where the second ITO is in contact with the first ITO but is not formed outside the second through-hole. This ensures that the distance between the ITOs of the adjacent terminals can be enlarged, whereby the probability of short-circuiting between the terminals can be lowered.
    Type: Application
    Filed: April 1, 2016
    Publication date: July 28, 2016
    Inventors: Tomonori NISHINO, Syou YANAGISAWA, Kentaro AGATA, Nobuyuki ISHIGE
  • Patent number: 9354457
    Abstract: An object of the present invention is to protect exposed inspection pads with a conductive tape when the application of resin is ceased and to enhance the reliability of the inspection pads. A liquid crystal display device is provided with a transparent electrode formed on a superficial side of a CF board, a grounded electrode, an inspection pad and a switching device between the inspection pad and a signal line or a scanning line respectively formed in a terminal area a TFT board and a conductive tape that electrically connects the transparent electrode of the CF board, the grounded electrode and the inspection pad respectively of the TFT board.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: May 31, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Tomonori Nishino, Syou Yanagisawa, Kentaro Agata, Nobuyuki Ishige