Patents by Inventor Koji Ishizaki

Koji Ishizaki 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).

  • Publication number: 20200042129
    Abstract: A detection device is provided and includes a first detection electrode; and a dummy module adjacent to the first detection electrode in a first direction, wherein the first detection electrode includes a plurality of first openings and a plurality of second openings, the dummy module includes a plurality of first gap portions and a plurality of second gap portions, each of the first openings and the first gap portions extends in a first inclined direction inclined at a first angle with respect to the first direction, each of the second openings and the second gap portions extends in a second inclined direction inclined at a second angle with respect to the first direction, the first openings are apart from each other, and the first gap portions are coupled to each other.
    Type: Application
    Filed: October 16, 2019
    Publication date: February 6, 2020
    Inventors: Hayato KURASAWA, Koji ISHIZAKI, Tomohiko OTANI
  • Publication number: 20200042121
    Abstract: According to one embodiment, a detection device includes a substrate, detection electrode, terminal formed of a metal material, lead, coating layer, conductive adhesion layer, and circuit board. The lead connects the electrode and the terminal. The coating layer covers the electrode and the lead, and partly covers the terminal. The adhesion layer covers a part of the terminal exposed from the coating layer and covers a part of the coating layer. The circuit board is connected to the terminal with the adhesion layer interposed therebetween. At least in an overlapping area where the adhesion layer covers the coating layer, an area of the metal material per unit area is smaller than that of the other area of the terminal.
    Type: Application
    Filed: August 21, 2019
    Publication date: February 6, 2020
    Inventors: Hayato Kurasawa, Keisuke Asada, Tatsuya Ide, Koji Ishizaki
  • Publication number: 20200033984
    Abstract: According to one embodiment, a sensor device is provided and including electrodes each including a first line, a second line, and a third line; and a lead line connected to one of the electrodes at a first end portion of the one of the electrodes, wherein the first to third lines are electrically connected to each other, the first line runs in a first direction, the second line runs in a second direction different from the first direction, and intersects the first line, the electrodes are arranged in a third direction different from the first and second directions, the third line runs in the third direction and located along the first end portion, the lead line is drawn from the third line, and detection signals are detected by the electrodes.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Inventors: Hayato KURASAWA, Toshihiko TANAKA, Naoki TAKADA, Chihiro TANAKA, Koji ISHIZAKI
  • Publication number: 20200019005
    Abstract: A detection device is provided. The detection device includes a first substrate; a plurality of detection electrodes disposed in a matrix configuration in a display region on a plane parallel to the first substrate; a second substrate facing the first substrate; a first conductive layer provided in a peripheral region located outside the display region in planar view; a polarizing plate provided above the second substrate; and a second conductive layer provided between the polarizing plate and the second substrate, wherein the second conductive layer is electrically coupled to the first conductive layer, and the first conductive layer is arranged to be part of an electrically connected loop around the display region.
    Type: Application
    Filed: September 23, 2019
    Publication date: January 16, 2020
    Inventors: Hayato KURASAWA, Koji ISHIZAKI
  • Patent number: 10534494
    Abstract: A detection device includes a substrate; a plurality of first conductive thin wires provided in a plane parallel to the substrate and extending in a first direction; a plurality of second conductive thin wires provided in the same layer as that of the first conductive thin wires and extending in a second direction forming an angle with the first direction; first groups that are disposed in first strip-like regions respectively having a first width, each of the first groups including at least two of the first conductive thin wires displaced from one another in the second direction; and second groups that are disposed in second strip-like regions respectively having a second width, each of the second groups including at least two of the second conductive thin wires displaced from one another in the first direction.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: January 14, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa
  • Publication number: 20200012366
    Abstract: An input device is provided and including a substrate; a plurality of first metal or alloy electrodes provided along a first direction on a main surface of the substrate; a plurality of second metal or alloy electrodes provided along a second direction intersecting with the first direction on the same surface as the main surface; and a protective film covering the plurality of first metal or alloy electrodes and the plurality of second metal or alloy electrodes.
    Type: Application
    Filed: September 16, 2019
    Publication date: January 9, 2020
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Hiroshi MIZUHASHI
  • Patent number: 10528205
    Abstract: To reduce disturbances in display of images due to static electricity without deteriorating optical properties in a display. The display includes a conductive pattern provided on the upper surface of the substrate, a protection layer provided on the upper surface of the substrate to cover the conductive pattern, and a conductive layer provided on the protection layer. The sheet resistance of the conductive pattern is not more than 8 ?/square. A ratio of the total sum of areas of portions of the plurality of sub-pixels that overlap the conductive pattern in a plan view to the total sum of the areas of the plurality of sub-pixels is 1 to 22%. A sheet resistance of the conductive layer is higher than the sheet resistance of the conductive pattern.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: January 7, 2020
    Assignee: Japan Display Inc.
    Inventors: Masanobu Ikeda, Koji Ishizaki, Hayato Kurasawa, Yoshihiro Watanabe, Toshimasa Ishigaki, Daisuke Sonoda, Tatsuya Ide
  • Patent number: 10503304
    Abstract: A display apparatus with a touch detection function includes: a substrate; a display area including a plurality of pixels; a touch detection electrode including a plurality of small electrode portions; a plurality of wiring portions electrically coupling the small electrode portions to a terminal portion formed; and a plurality of drive electrodes forming capacitance between the drive electrodes and the touch detection electrode. The small electrode portions each include one conductive thin wire in which one first thin wire segment and one second thin wire segment are coupled in a first direction, the first thin wire segment makes a first angle with respect to the first direction, the second thin wire segment makes a second angle with respect to the first direction, and the wiring portions each include the one first thin wire segment and the one second thin wire segment that are coupled in the first direction.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: December 10, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Koji Ishizaki
  • Patent number: 10496223
    Abstract: A touch detection device and a display device with a touch detection function include: a substrate; a touch detection electrode that is arranged on a plane parallel with the substrate, and that includes a plurality of wires arranged at intervals from one another; and a conductive layer that has a sheet resistance value larger than that of the wires, and that is in contact with and overlaps the wires.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: December 3, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Koji Ishizaki
  • Patent number: 10496207
    Abstract: According to one embodiment, a sensor-equipped display device includes first electrodes and a detection electrode. The first electrodes constitute sensor drive electrodes by being supplied with sensor drive signals separately and sequentially or sensor drive electrodes by simultaneously supplying the sensor drive signals to the first electrodes adjacent to each other. A width of the sensor drive electrode including the first electrode on the edge is smaller than a width of the other sensor drive electrode not including the first electrode on the edge.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: December 3, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Yasuyuki Teranishi, Hiroshi Mizuhashi, Koji Ishizaki, Daisuke Ito
  • Publication number: 20190361314
    Abstract: According to one embodiment, a display device includes a scanning line, a semiconductor layer, a first inorganic insulating film located between the scanning line and the semiconductor layer, a first signal line, a second inorganic insulating film having a main surface which contacts the first signal line and located between the semiconductor layer and the first signal line, a capacitance electrode contacting the main surface, a pixel electrode overlapping the capacitance electrode, and a third inorganic insulating film covering the first signal line and the capacitance electrode and located between the first signal line and the pixel electrode and between the capacitance electrode and the pixel electrode.
    Type: Application
    Filed: May 17, 2019
    Publication date: November 28, 2019
    Applicant: Japan Display Inc.
    Inventors: Tomoyasu HIRANO, Yoshitaka OZEKI, Koji ISHIZAKI, Takahiro TAKEUCHI, Koshiro MORIGUCHI
  • Publication number: 20190339797
    Abstract: A detection device includes a substrate; a plurality of first conductive thin wires provided in a plane parallel to the substrate and extending in a first direction; a plurality of second conductive thin wires provided in the same layer as that of the first conductive thin wires and extending in a second direction forming an angle with the first direction; first groups that are disposed in first strip-like regions respectively having a first width, each of the first groups including at least two of the first conductive thin wires displaced from one another in the second direction; and second groups that are disposed in second strip-like regions respectively having a second width, each of the second groups including at least two of the second conductive thin wires displaced from one another in the first direction.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Inventors: Koji ISHIZAKI, Hayato KURASAWA
  • Patent number: 10466825
    Abstract: According to one embodiment, a sensor-equipped display device includes a display panel which includes a sensor driving electrode disposed in a display area for displaying an image, detection electrodes each including a body portion opposed to the sensor driving electrode in the display area and a broadened portion connected to the body portion and formed to be wider than the body portion, and a lead line disposed in a non-display area outside the display area and electrically connected to the broadened portion. The broadened portion is disposed in the non-display area without being overlaid on the display area in planar view.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: November 5, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Toshihiko Tanaka, Naoki Takada, Chihiro Tanaka, Koji Ishizaki
  • Patent number: 10459551
    Abstract: According to one embodiment, a sensor-equipped display device includes a display panel including pixel electrodes and common electrodes, a cover member opposed to the display panel, a polarizer located between the display panel and the cover member, and a first detection module located between the polarizer and the cover member. The first detection module includes a first detection electrode including dot-like openings and a dummy module including dot-like dummy electrodes.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: October 29, 2019
    Assignee: JAPAN DISPLAY INC.
    Inventors: Hayato Kurasawa, Koji Ishizaki, Tomohiko Otani
  • Publication number: 20190324578
    Abstract: According to an aspect, a detection device includes: a substrate; a detection electrode disposed on a plane parallel to a surface of the substrate and including conductive thin wires and electrical coupling portions disposed where the conductive thin wires intersect with each other or are bent, and are coupled with each other, the conductive thin wires being arranged in a mesh-like form; a coupling wire that couples the conductive thin wires with a detecting unit at an end portion of the detection electrode; and a protective layer that is made of an insulation material and that covers the detection electrode and the coupling wire. An area density of the conductive thin wires per unit area is smaller in an end region ranging from an electrical coupling portion closest to the coupling wire to the coupling wire than in a region of the entire detection electrode.
    Type: Application
    Filed: July 3, 2019
    Publication date: October 24, 2019
    Inventors: Koji ISHIZAKI, Masahiro TERAMOTO, Yuji SATO
  • Publication number: 20190310730
    Abstract: A display device with a touch detection function including: a plurality of elements performing display operation; a plurality of touch detection electrodes arranged side by side to extend in one direction, and each outputting a detection signal based on a change in an electrostatic capacitance caused by an external proximity object; a conductive film insulated from or connected with high resistance to the touch detection electrodes, and disposed to cover the touch detection electrodes; and a touch detection circuit detecting the external proximity object by sampling the detection signal. The conductive film has a sheet resistance equal to or smaller than a predetermined resistance value, and has a time constant larger than a predetermined minimum time constant defined by sampling timings in the touch detection circuit.
    Type: Application
    Filed: June 25, 2019
    Publication date: October 10, 2019
    Applicant: Japan Display Inc.
    Inventors: Koji ishizaki, Koji Noguchi, Osamu Ishige
  • Patent number: 10437404
    Abstract: According to one embodiment, a detection device includes a substrate, detection electrode, terminal formed of a metal material, lead, coating layer, conductive adhesion layer, and circuit board. The lead connects the electrode and the terminal. The coating layer covers the electrode and the lead, and partly covers the terminal. The adhesion layer covers a part of the terminal exposed from the coating layer and covers a part of the coating layer. The circuit board is connected to the terminal with the adhesion layer interposed therebetween. At least in an overlapping area where the adhesion layer covers the coating layer, an area of the metal material per unit area is smaller than that of the other area of the terminal.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: October 8, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Keisuke Asada, Tatsuya Ide, Koji Ishizaki
  • Publication number: 20190302945
    Abstract: According to one embodiment, a sensor-equipped display device includes first electrodes and a detection electrode. The first electrodes constitute sensor drive electrodes by being supplied with sensor drive signals separately and sequentially or sensor drive electrodes by simultaneously supplying the sensor drive signals to the first electrodes adjacent to each other. A width of the sensor drive electrode including the first electrode on the edge is smaller than a width of the other sensor drive electrode not including the first electrode on the edge.
    Type: Application
    Filed: June 18, 2019
    Publication date: October 3, 2019
    Inventors: Hayato Kurasawa, Yasuyuki Teranishi, Hiroshi Mizuhashi, Koji Ishizaki, Daisuke Ito
  • Publication number: 20190302565
    Abstract: According to one embodiment, a display device includes a capacitance electrode, a first pixel electrode overlapping the capacitance electrode, a second pixel electrode overlapping the capacitance electrode, a shield layer disposed between the first pixel electrode and the second pixel electrode, a common electrode, and an electrophoretic element disposed between the common electrode and the first pixel electrode and between the common electrode and the shield layer. The first pixel electrode and the second pixel electrode are arranged along a first direction, and the shield layer extends in a second direction which crosses the first direction between the first pixel electrode and the second pixel electrode.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 3, 2019
    Applicant: Japan Display Inc.
    Inventors: Takahiro TAKEUCHI, Yoshitaka Ozeki, Koji Ishizaki, Tomoyasu Hirano, Koshiro Moriguchi
  • Publication number: 20190302509
    Abstract: According to one embodiment, a display device includes a base substrate, a switching element including a semiconductor layer, a power supply line, a pixel electrode electrically connected to the switching element, a capacitance electrode positioned between the base substrate and the pixel electrode and electrically connected to the power supply line, a first interlayer insulating film positioned between the pixel electrode and the capacitance electrode, a common electrode, and an electrophoretic element positioned between the pixel electrode and the common electrode. An edge of the capacitance electrode overlaps the pixel electrode over the entire periphery thereof.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 3, 2019
    Applicant: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Tadayoshi Katsuta, Koji Ishizaki, Takahiro Takeuchi, Koshiro Moriguchi