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: 20190102042
    Abstract: A display device includes: a plurality of first electrodes arranged in a display region for displaying an image; a second electrode opposed to the first electrodes; a plurality of switching elements that are arranged in the display region and coupled to the first electrodes or the second electrode; a gate line for supplying a scanning signal for scanning the switching elements; a data line for supplying a signal to the switching elements that are coupled to the switching elements; and conductive wire that is opposed to the second electrode via an insulating layer and is coupled to the switching elements.
    Type: Application
    Filed: November 30, 2018
    Publication date: April 4, 2019
    Inventors: Hayato Kurasawa, Hiroshi Mizuhashi
  • Publication number: 20190102006
    Abstract: According to an aspect, a detection device includes: an insulating substrate including a plurality of detection electrodes; a transmission conductor disposed adjacent to the detection electrodes; a drive signal generator coupled to the transmission conductor; and a detector coupled to the detection electrodes. The drive signal generator generates a detection drive signal and supplies the detection drive signal to the transmission conductor. The detector detects a detection signal corresponding to a change in capacitance in the detection electrodes.
    Type: Application
    Filed: September 24, 2018
    Publication date: April 4, 2019
    Inventors: Yuji SUZUKI, Toshinori UEHARA, Hayato KURASAWA
  • Publication number: 20190102596
    Abstract: According to an aspect, a detection device includes: a first circuit substrate; a glass substrate attached at a position close to one surface of the first circuit substrate; a metal wire that couples an electrode provided on the one surface of the first circuit substrate to an electrode provided on the glass substrate; and a resin member that covers the glass substrate and the metal wire. The glass substrate includes a detection electrode that detects electrostatic capacitance.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Inventors: Daichi SUZUKI, Hayato KURASAWA, Hiroshi MIZUHASHI, Toshinori UEHARA, Yuji SUZUKI
  • Publication number: 20190102039
    Abstract: A detection apparatus includes a substrate, a plurality of first electrodes provided on the substrate, a first selection circuit provided on the substrate, the first selection circuit including a plurality of first input terminals that receive a first control signal supplied from an outside and a plurality of first output terminals that output a first selection signal based on the first control signal, and a second selection circuit provided on the substrate, the second selection circuit including a plurality of second input terminals that receive a second control signal supplied from the outside and a plurality of second output terminals that output a second selection signal based on the second control signal.
    Type: Application
    Filed: September 24, 2018
    Publication date: April 4, 2019
    Inventors: Toshinori UEHARA, Hayato KURASAWA
  • Patent number: 10248275
    Abstract: A sensor-equipped display device is provided and includes a display panel and a detection electrode. The panel includes a display area in which pixels are arranged with a first pixel pitch in a first direction and a second pixel pitch in a second direction. The electrode includes an pattern having line fragments. The pattern has connection points at which ends of the fragments are connected to each other, and at least part of the connection points is arranged linearly such that an arrangement gaps thereof in the first and second direction is set to a first and second connection point pitch.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: April 2, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Koji Ishizaki
  • Publication number: 20190095035
    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: Application
    Filed: November 21, 2018
    Publication date: March 28, 2019
    Inventors: Hayato KURASAWA, Koji ISHIZAKI
  • Patent number: 10242244
    Abstract: A fingerprint detection device includes: a substrate having a first surface and a second surface on an opposite side of the first surface, the first surface serving as a detection surface configured to detect unevenness of an object in contact or in proximity; a detection electrode provided on the second surface side of the substrate and configured to detect unevenness of a finger in contact or in proximity on the basis of an electrostatic capacitance change; and a drive circuit provided on the second surface side of the substrate and configured to supply a drive signal to the detection electrode.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: March 26, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Toshinori Uehara, Hiroshi Mizuhashi
  • Publication number: 20190087038
    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: Application
    Filed: November 16, 2018
    Publication date: March 21, 2019
    Inventors: Tadayoshi KATSUTA, Hiroshi MIZUHASHI, Hayato KURASAWA
  • Patent number: 10234991
    Abstract: A display device includes a plurality of scanning lines provided over an insulating surface, a plurality of video signal lines provided, intersecting with the plurality of scanning lines, a display area including a plurality of pixels, each having a light emitting element and a transistor for controlling a current supplied to the light emitting element, provided at points of intersection between the plurality of scanning lines and the plurality of video signal lines, and a touch sensor provided over the display area and having a drive electrode and a detection electrode which form an electrostatic capacitance with each other.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: March 19, 2019
    Assignee: Japan Display Inc.
    Inventors: Mitsuhide Miyamoto, Takayuki Nakanishi, Hayato Kurasawa, Hiroshi Mizuhashi, Shuji Hayashi, Yoshitoshi Kida
  • Publication number: 20190073084
    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: Application
    Filed: November 2, 2018
    Publication date: March 7, 2019
    Inventors: Naosuke FURUTANI, Hayato KURASAWA, Makoto HAYASHI
  • Publication number: 20190072827
    Abstract: According to an aspect, a display device has a first electrode, a second electrode and liquid crystal layer. When a voltage is not applied to the first and second electrodes, the major axes of the liquid crystal molecules are oriented in a third direction. When a voltage is applied between the first and second electrodes, the major axes are oriented so as to rise in a direction perpendicular to a first substrate while rotating clockwise in a vicinity of one of long sides of comb tooth portion that face each other and counterclockwise in a vicinity of the other of the long sides. An angle between an electrode base-side portion of a long side of each comb tooth portions and the third direction is larger than an angle between a distal end-side portion of the long side of each comb tooth portions and the third direction.
    Type: Application
    Filed: November 5, 2018
    Publication date: March 7, 2019
    Inventors: Hayato Kurasawa, Toshiharu Matsushima
  • Patent number: 10223982
    Abstract: In a display apparatus provided with an electrophoresis layer, such a display apparatus as to improve the response performance of a touch detection is provided. A driving unit included in a display apparatus alternately repeats a display driving process for supplying a first driving signal to a driving electrode disposed in a selected partial display region and a detection driving process for supplying a second driving signal to a driving electrode disposed in another selected partial display region while successively cyclically changing the partial display region and successively cyclically changing another partial detection region. Moreover, in the detection driving process, a touch detection unit included in the display apparatus detects an input position at another selected partial detection region based on an electrostatic capacitance of the driving electrode disposed at another selected detection region.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: March 5, 2019
    Assignee: Japan Display Inc.
    Inventors: Yoshiharu Nakajima, Hayato Kurasawa
  • Publication number: 20190065807
    Abstract: According to one embodiment, a sensor includes a first control line, a first signal line, a first detection switch, a common electrode, a first detection electrode, a first circuit and a second circuit. The common electrode is located above the first control line, the first signal line and the first detection switch, opposed to the first control line, the first signal line and the first detection switch. The first detection electrode is located above the common electrode. The first circuit and the second circuit are located under the common electrode, and are opposed to the common electrode.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Inventors: Hiroshi MIZUHASHI, Gen KOIDE, Hayato KURASAWA, Toshio SOYA, Fumitaka GOTOH
  • Publication number: 20190064948
    Abstract: A display apparatus with a touch detection function capable of improving accuracy is provided. The display apparatus includes: a pixel array having a plurality of pixels arranged in a matrix form; and a plurality of signal wires arranged in the pixel array. Here, when an externally-detecting object is detected, a plurality of coils having areas overlapping with each other are formed of a plurality of signal wires (drive electrodes) among the plurality of signal wires, and a magnetic field generated in the plurality of respective coils are superimposed in an overlapped area by supplying a drive signal to the plurality of coils.
    Type: Application
    Filed: October 25, 2018
    Publication date: February 28, 2019
    Inventors: Hiroshi MIZUHASHI, Hayato KURASAWA, Daichi SUZUKI, Fumitaka GOTOH
  • Patent number: 10216345
    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: July 26, 2017
    Date of Patent: February 26, 2019
    Assignee: Japan Display Inc.
    Inventors: Masanobu Ikeda, Koji Ishizaki, Hayato Kurasawa, Yoshihiro Watanabe, Toshimasa Ishigaki, Daisuke Sonoda, Tatsuya Ide
  • Patent number: 10216348
    Abstract: According to an aspect, a display device with a touch detection function includes: a substrate; a display area in which pixels each constituted by different color regions are arranged in a matrix and that includes color columns in which the color regions of the same colors extend side by side; a touch detection electrode that includes a plurality of conductive thin wires; and a drive electrode. Each of the conductive thin wires includes a plurality of portions at each of which the conductive thin wire extends in a direction at an angle with respect to a direction of extension of the color regions, and a plurality of bent portions at each of which the conductive thin wire is bent with the angle changed. The conductive thin wires include portions each overlapping all of the color columns in a direction orthogonal to the surface of the substrate.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: February 26, 2019
    Assignee: Japan Display Inc.
    Inventors: Takeo Koito, Koji Ishizaki, Hayato Kurasawa
  • Publication number: 20190050089
    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: October 18, 2018
    Publication date: February 14, 2019
    Inventors: Shinya Iuchi, Taiki Kasai, Hayato Kurasawa
  • Publication number: 20190050088
    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: October 18, 2018
    Publication date: February 14, 2019
    Inventors: Koji ISHIZAKI, Hayato KURASAWA
  • Patent number: 10197859
    Abstract: A liquid crystal display panel is provided and includes a pair of substrates arranged face to face so as to sandwich a liquid crystal layer, a lower electrode formed on a lower substrate, an upper electrode formed on the lower substrate through an insulating layer, in which plural slits are formed in each sub-pixel, wherein each of the plural slits is formed as an aperture in which both ends thereof in the longitudinal direction are closed, and an alignment film formed so as to cover a surface of the upper electrode and the insulating layer. The plural slits have different widths at both ends of slits in a longitudinal direction, and a rubbing direction of the alignment film is a direction crossing longitudinal edges of each of the slits.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: February 5, 2019
    Assignee: Japan Display Inc.
    Inventors: Aya Yoso, Joji Nishimura, Hayato Kurasawa
  • Publication number: 20190033641
    Abstract: A display apparatus includes a first substrate, a second substrate facing the first substrate, lead wirings provided on the first substrate or the second substrate and a first insulator part provided on an upper surface of the second substrate. The lead wirings are arranged in a peripheral region when seen in a plan view and the first insulator part is arranged so as to overlap a display region when seen in a plan view. Second insulator parts or spaces with a permittivity lower than a permittivity of the first insulator part are provided at sides of the first insulator part. The second insulator parts or the spaces are arranged so as to overlap the lead wirings in the peripheral region when seen in a plan view.
    Type: Application
    Filed: October 3, 2018
    Publication date: January 31, 2019
    Inventors: Koji Ishizaki, Masanobu Ikeda, Hayato Kurasawa, Yoshihiro Watanabe