Patents by Inventor Hayato Kurasawa

Hayato Kurasawa 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: 20190369802
    Abstract: A detection device capable of detecting an external proximity object is provided. The detection device includes a substrate; and a plurality of thin conductive wires including: a plurality of first thin conductive wires each including a plurality of first thin wire pieces; and a plurality of second thin conductive wires each including a plurality of second thin wire pieces, the first thin wire pieces and the second thin wire pieces being made of a metal material and each including a first end portion and a second end portion.
    Type: Application
    Filed: August 20, 2019
    Publication date: December 5, 2019
    Inventor: Hayato KURASAWA
  • 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
  • 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
  • Publication number: 20190354739
    Abstract: A fingerprint sensor and includes a first substrate having a first surface; an insulating layer having a second surface opposed to the first surface of the first substrate, and a third surface opposed to the second surface; sensor electrodes arranged in a matrix in the third surface; and a conductive portion arranged in the first surface of the first substrate and configured to supply a drive signal, wherein a height of the conductive portion is higher than a height of one of the sensor electrodes in a direction perpendicular to the first surface of the first substrate.
    Type: Application
    Filed: August 5, 2019
    Publication date: November 21, 2019
    Inventors: Fumihito SHIBANO, Hiroshi MIZUHASHI, Toshinori UEHARA, Kimiyo NONOYAMA, Hayato KURASAWA
  • Patent number: 10483475
    Abstract: A display device includes a plurality of sub pixels; a plurality of first electrodes, the sub pixel having the plurality of first electrodes; a plurality of second electrodes, the second electrode being provided commonly for at least one row pixel group, the row pixel group including sub pixels arrayed in a line in a first direction among the plurality of sub pixels, the plurality of second electrodes being arrayed in a second direction crossing the first direction; a light emitting layer between the first electrode and the second electrode, the sub pixel having the light emitting layer; and a plurality of third electrodes facing the second electrodes, the third electrodes and the second electrodes forming capacitances, the third electrodes being connected with a plurality of output terminals respectively.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: November 19, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Mitsuhide Miyamoto, Hiroshi Mizuhashi, Takayuki Nakanishi, Shuji Hayashi, Yoshitoshi Kida
  • Publication number: 20190346950
    Abstract: According to an aspect, a detecting apparatus includes: a touch detection electrode provided along a touch detection surface; a strain gauge integrated with the touch detection electrode.
    Type: Application
    Filed: July 26, 2019
    Publication date: November 14, 2019
    Inventors: Shinya Iuchi, Taiki Kasai, Hayato Kurasawa
  • Patent number: 10474276
    Abstract: To provide a display device with a touch detection function capable of suppressing an increase in price. The display device is provided with a pixel array which includes a plurality of pixels; a plurality of signal lines which supply an image signal to the plurality of pixels; a plurality of drive electrodes which supply a drive signal to the plurality of pixels; and an electrode driving circuit which supplies a magnetic field drive signal to the drive electrode at a time of detecting an external proximity object using the magnetic field, and supplies an electric field drive signal to the drive electrode at a time of detecting the external proximity object using the electric field.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: November 12, 2019
    Assignee: JAPAN DISPLAY INC.
    Inventors: Hiroshi Mizuhashi, Hayato Kurasawa, Fumitaka Gotoh, Daichi Suzuki
  • 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
  • Publication number: 20190331969
    Abstract: A liquid crystal includes first and second substrates, the first substrate including intersecting data lines and scan lines. A liquid crystal layer is sandwiched therebetween. Also, a plurality of sub-pixels districted by data lines and gate lines, and arranged along the long-axis and the short-axis directions in a matrix. A pixel electrode in the sub-pixels includes a central portion. A common electrode including linear electrodes arranged along the data lines and disposed with gaps therebetween. Sub-pixels are bent at the center portion, such that the linear electrodes or the gaps in both sides of the sub-pixels are inclined in opposite directions with respect to the long-axis direction. At least one of the linear electrodes or at least one of the gaps has a bent portion at the central portion of the respective pixel electrode. The common electrode is provided on liquid crystal layer side over the pixel electrode.
    Type: Application
    Filed: July 11, 2019
    Publication date: October 31, 2019
    Inventors: Takao Atarashiya, Hayato Kurasawa
  • Publication number: 20190331970
    Abstract: A liquid crystal includes first and second substrates, the first substrate including intersecting data lines and scan lines. A liquid crystal layer is sandwiched therebetween. Also, a plurality of sub-pixels districted by data lines and gate lines, and arranged along the long-axis and the short-axis directions in a matrix. A pixel electrode in the sub-pixels includes a central portion. A common electrode including linear electrodes arranged along the data lines and disposed with gaps therebetween. Sub-pixels are bent at the center portion, such that the linear electrodes or the gaps in both sides of the sub-pixels are inclined in opposite directions with respect to the long-axis direction. At least one of the linear electrodes or at least one of the gaps has a bent portion at the central portion of the respective pixel electrode. The common electrode is provided on liquid crystal layer side over the pixel electrode.
    Type: Application
    Filed: July 11, 2019
    Publication date: October 31, 2019
    Inventors: Takao Atarashiya, Hayato Kurasawa
  • 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
  • Patent number: 10452189
    Abstract: To provide a display device with a touch detection function capable of suppressing an increase of price. The display device includes a pixel array that has a plurality of pixels disposed in a matrix form, a plurality of scan lines that are disposed in each row of the pixel array and supply a scan signal to the plurality of pixels disposed in each corresponding row, a plurality of signal lines that are disposed in each column of the pixel array and supply an image signal to the plurality of pixels disposed in each corresponding column, and a plurality of drive electrodes that are disposed in the pixel array and supply a drive signal to the plurality of pixels at a time of displaying an image. A coil that generates a magnetic field is formed using the plurality of drive electrodes at a time of detecting an external proximity object.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: October 22, 2019
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Mizuhashi, Hayato Kurasawa, Daichi Suzuki, Fumitaka Gotoh, Makoto Hayashi
  • Patent number: 10452193
    Abstract: A display device with a touch sensor having a display function and a touch sensor function is provided. The display device includes a first substrate including a pixel electrode; a first electrode along a first direction; and a second substrate including a second electrode that includes patterns of electrodes along a second direction crossing the first direction and that faces the first electrode and the pixel electrode, wherein upon the display function being activated, the pixel electrode is supplied with a pixel signal, and the second electrode is supplied with common voltage, and upon the touch sensor function being activated, the first electrode is applied with a first signal and the second electrode is configured to receive the first signal to be a second signal as a touch detecting signal.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: October 22, 2019
    Assignee: Japan Display Inc.
    Inventors: Naosuke Furutani, Hayato Kurasawa, Makoto Hayashi
  • Patent number: 10437367
    Abstract: A display apparatus includes a basement, a display functional layer, a first electrode, a guard electrode, and a detection controller. The basement has a first surface and a second surface opposite to the first surface. The display functional layer is arranged on the side of the second surface of the basement. The first electrode is arranged between the basement and the display functional layer and detects an object in contact with or in proximity to the first surface. The guard electrode is arranged between the first electrode and the basement and supplied with a guard signal. The guard signal suppresses a change in capacitance generated between the first electrode and the guard electrode. The detection controller is a controller to which a signal based on a change in capacitance of the first electrode is output from the first electrode.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: October 8, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Shinichiro Oka, Toshinori Uehara, Hiroshi Mizuhashi, Yoshitoshi Kida
  • 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
  • Patent number: 10437407
    Abstract: An input detection device is provided with a plurality of drive electrodes, a metal electrode opposed to the plurality of drive electrodes and having a predetermined wiring pattern, and a light-shielding film. In plan view, a width of the wiring pattern of the metal electrode overlapped with a portion of the light-shielding film with a large width is larger than a width of the wiring pattern of the metal electrode overlapped with portions other than the portion of the light-shielding film with the large width.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: October 8, 2019
    Assignee: Japan Display Inc.
    Inventors: Tadayoshi Katsuta, Hiroshi Mizuhashi, Hayato Kurasawa
  • Patent number: 10437364
    Abstract: According to one embodiment, a sensor-equipped display device, includes pixel electrodes above an insulating substrate, a first sensor electrode includes a first electrode portion and a first line portion connected to the first electrode portion, and a second sensor electrode includes a second electrode portion and a second line portion connected to the second electrode portion, each of the first sensor electrode and the second sensor electrode being opposed to the pixel electrodes, and includes a first conductive layer and a second conductive layer which is disposed on the first conductive layer.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: October 8, 2019
    Assignee: Japan Display Inc.
    Inventors: Yasuyuki Teranishi, Hayato Kurasawa, Koji Noguchi
  • Publication number: 20190302967
    Abstract: According to an aspect, a display device includes: a first substrate; a second substrate facing the first substrate; a display function layer between the first substrate and the second substrate and displaying an image; first electrodes in a detection region of the first substrate; second electrodes in the detection region above the second substrate; a first electrode selection circuit in a peripheral region outside the detection region of the first substrate; and a second electrode selection circuit in a region overlapping with the peripheral region above the second substrate. The first electrode selection circuit selects some of the first electrodes, and supplies detection drive signals having phases determined on the basis of a certain code to the selected first electrodes. The second electrode selection circuit selects some of the second electrodes on the basis of a certain code, and couples the selected second electrodes to a single output signal line.
    Type: Application
    Filed: April 1, 2019
    Publication date: October 3, 2019
    Inventors: Hayato KURASAWA, Toshinori UEHARA, Yuji SUZUKI
  • 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