Patents by Inventor Takanori Tsunashima

Takanori Tsunashima 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: 11973161
    Abstract: A photo sensor circuit includes: a photo transistor; a first switching transistor; a second switching transistor; and a capacitance element. The photo transistor includes: a gate connected to a first wiring; a source connected to a second wiring; and a drain. The first switching transistor includes: a gate connected to a third wiring; a source connected to a fourth wiring; and a drain connected to the drain of the photo transistor. The capacitance element includes: a first terminal connected to the drain of the photo transistor; and a second terminal connected to the source of the first switching transistor. The second switching transistor includes: a gate connected to a gate line; a source connected to a signal line; and a drain connected to the first terminal of the capacitance element. The photo transistor, first switching transistor, and second transistor each include an oxide semiconductor layer as a channel layer.
    Type: Grant
    Filed: December 30, 2022
    Date of Patent: April 30, 2024
    Assignee: JAPAN DISPLAY INC.
    Inventors: Masashi Tsubuku, Takanori Tsunashima, Marina Mochizuki
  • Publication number: 20240071128
    Abstract: A detection device includes a plurality of optical sensors arranged in a detection area, a light source configured to emit light that is emitted to an object to be detected and is detected by the optical sensors, and a processor configured to perform processing based on outputs from the optical sensors. The processor is configured to determine, based on the outputs of the respective optical sensors obtained at a cycle of a predetermined period, an optical sensor an output of which is to be employed from among the optical sensors.
    Type: Application
    Filed: November 3, 2023
    Publication date: February 29, 2024
    Inventors: Hirofumi KATO, Makoto UCHIDA, Takanori TSUNASHIMA, Takashi NAKAMURA, Akio TAKIMOTO, Takao SOMEYA, Tomoyuki YOKOTA
  • Patent number: 11888080
    Abstract: A detection device is provided. The detection device includes a sensor base; a plurality of photoelectric conversion elements that are provided in a detection area of the sensor base and are configured to receive light incident thereon and output signals corresponding to the received light; a plurality of switching elements provided in the respective photoelectric conversion elements; a plurality of gate lines that are coupled to the switching elements and extend in a first direction; a first light source configured to emit first light having a first maximum emission wavelength; and a second light source configured to emit second light having a second maximum emission wavelength.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: January 30, 2024
    Assignee: Japan Display Inc.
    Inventors: Hirofumi Kato, Takanori Tsunashima, Makoto Uchida, Takashi Nakamura, Akio Takimoto, Takao Someya, Tomoyuki Yokota
  • Patent number: 11874566
    Abstract: According to one embodiment, an electronic device includes a liquid crystal panel and a camera. The liquid crystal panel includes a display area and an incident light control area. The camera overlaps the incident light control area. The display area includes a pixel electrode. The incident light control area includes a first control electrode which is different in shape from the pixel electrode, a second control electrode, and a common electrode. A voltage applied to the first control electrode and a voltage applied to the second control electrode are different in polarity from a common voltage applied to the common electrode.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: January 16, 2024
    Assignee: Japan Display Inc.
    Inventor: Takanori Tsunashima
  • Patent number: 11854299
    Abstract: A detection device includes a plurality of optical sensors arranged in a detection area, a light source configured to emit light that is emitted to an object to be detected and is detected by the optical sensors, and a processor configured to perform processing based on outputs from the optical sensors. The processor is configured to determine, based on the outputs of the respective optical sensors obtained at a cycle of a predetermined period, an optical sensor an output of which is to be employed from among the optical sensors.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: December 26, 2023
    Assignees: Japan Display Inc., The University of Tokyo
    Inventors: Hirofumi Kato, Makoto Uchida, Takanori Tsunashima, Takashi Nakamura, Akio Takimoto, Takao Someya, Tomoyuki Yokota
  • Patent number: 11710340
    Abstract: A photodiode array is provided and includes insulating substrate; photodiodes arrayed in detection region of insulating substrate, photodiodes configured to output signal in accordance with light incident on photodiodes; first switching elements corresponding to photodiodes and including first semiconductor made of oxide semiconductor; gate lines coupled with first switching elements and extending in first direction; signal lines coupled with first switching elements and extending in second direction intersecting first direction; and gate line drive circuit including second switching element that includes second semiconductor made of polycrystalline silicone, gate line drive circuit being provided in peripheral region outside detection region and configured to drive gate lines, wherein photodiodes includes translucent conductive layer that is cathode, and translucent conductive layer overlaps none of signal lines in plan view.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: July 25, 2023
    Assignee: Japan Display Inc.
    Inventors: Makoto Uchida, Takanori Tsunashima, Masahiro Tada, Tomoyuki Ito, Takashi Nakamura
  • Publication number: 20230134613
    Abstract: According to an aspect, a detection device includes: a substrate; a plurality of first electrodes arranged on the substrate; an insulating film provided between the first electrodes adjacent to each other; a plurality of photodiodes provided so as to correspond to the first electrodes; and a second electrode provided across the photodiodes. The photodiodes each comprise a first carrier transport layer, an active layer, and a second carrier transport layer stacked on the substrate. The first carrier transport layer, the active layer, and the second carrier transport layer are provided so as to cover the first electrodes and the insulating film between the adjacent first electrodes.
    Type: Application
    Filed: November 2, 2022
    Publication date: May 4, 2023
    Inventor: Takanori TSUNASHIMA
  • Publication number: 20230138390
    Abstract: According to one embodiment, an optical sensor device includes an insulating substrate, a first conductive layer and an optical sensor element disposed between the insulating substrate and the first conductive layer. The optical sensor element is electrically connected to the first conductive layer and covered by the first conductive layer. The optical sensor element includes a first semiconductor layer formed of an oxide semiconductor and controls an amount of charge flowing to the first conductive layer according to an amount of incident light to the first semiconductor layer.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 4, 2023
    Applicant: Japan Display Inc.
    Inventors: Takanori TSUNASHIMA, Masashi TSUBUKU, Makoto UCHIDA
  • Publication number: 20230137257
    Abstract: A photo sensor circuit includes: a photo transistor; a first switching transistor; a second switching transistor; and a capacitance element. The photo transistor includes: a gate connected to a first wiring; a source connected to a second wiring; and a drain. The first switching transistor includes: a gate connected to a third wiring; a source connected to a fourth wiring; and a drain connected to the drain of the photo transistor. The capacitance element includes: a first terminal connected to the drain of the photo transistor; and a second terminal connected to the source of the first switching transistor. The second switching transistor includes: a gate connected to a gate line; a source connected to a signal line; and a drain connected to the first terminal of the capacitance element. The photo transistor, first switching transistor, and second transistor each include an oxide semiconductor layer as a channel layer.
    Type: Application
    Filed: December 30, 2022
    Publication date: May 4, 2023
    Applicant: Japan Display Inc.
    Inventors: Masashi TSUBUKU, Takanori TSUNASHIMA, Marina MOCHIZUKI
  • Patent number: 11581358
    Abstract: According to one embodiment, an optical sensor device includes an insulating substrate, a first conductive layer and an optical sensor element disposed between the insulating substrate and the first conductive layer. The optical sensor element is electrically connected to the first conductive layer and covered by the first conductive layer. The optical sensor element includes a first semiconductor layer formed of an oxide semiconductor and controls an amount of charge flowing to the first conductive layer according to an amount of incident light to the first semiconductor layer.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: February 14, 2023
    Assignee: Japan Display Inc.
    Inventors: Takanori Tsunashima, Masashi Tsubuku, Makoto Uchida
  • Patent number: 11575062
    Abstract: A photo sensor circuit includes: a photo transistor; a first switching transistor; a second switching transistor; and a capacitance element. The photo transistor includes: a gate connected to a first wiring; a source connected to a second wiring; and a drain. The first switching transistor includes: a gate connected to a third wiring; a source connected to a fourth wiring; and a drain connected to the drain of the photo transistor. The capacitance element includes: a first terminal connected to the drain of the photo transistor; and a second terminal connected to the source of the first switching transistor. The second switching transistor includes: a gate connected to a gate line; a source connected to a signal line; and a drain connected to the first terminal of the capacitance element. The photo transistor, first switching transistor, and second transistor each include an oxide semiconductor layer as a channel layer.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: February 7, 2023
    Assignee: JAPAN DISPLAY INC.
    Inventors: Masashi Tsubuku, Takanori Tsunashima, Marina Mochizuki
  • Publication number: 20230005291
    Abstract: A photodiode array is provided and includes insulating substrate; photodiodes arrayed in detection region of insulating substrate, photodiodes configured to output signal in accordance with light incident on photodiodes; first switching elements corresponding to photodiodes and including first semiconductor made of oxide semiconductor; gate lines coupled with first switching elements and extending in first direction; signal lines coupled with first switching elements and extending in second direction intersecting first direction; and gate line drive circuit including second switching element that includes second semiconductor made of polycrystalline silicone, gate line drive circuit being provided in peripheral region outside detection region and configured to drive gate lines, wherein photodiodes includes translucent conductive layer that is cathode, and translucent conductive layer overlaps none of signal lines in plan view.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 5, 2023
    Inventors: Makoto UCHIDA, Takanori TSUNASHIMA, Masahiro TADA, Tomoyuki ITO, Takashi NAKAMURA
  • Publication number: 20220375973
    Abstract: A detection device includes a plurality of detection elements arranged in a matrix having a row-column configuration in a detection region, a plurality of scan lines coupled to the detection elements arranged in a first direction, a plurality of output signal lines that are coupled to the detection elements arranged in a second direction different from the first direction, and to which the detection elements output detection signals, a detection circuit configured to be supplied with the detection signals through the output signal lines, and a control circuit configured to output at least selection signals for switching between selection and non-selection of the output signal lines to supply the detection signals to the detection circuit. The control circuit is configured to discharge an electric charge of each of the non-selected output signal lines different from the selected output signal lines.
    Type: Application
    Filed: May 18, 2022
    Publication date: November 24, 2022
    Inventor: Takanori TSUNASHIMA
  • Publication number: 20220310667
    Abstract: According to one embodiment, a semiconductor device including, a panel including an inorganic film, and a first pad and a second pad positioned on the inorganic film, and a line substrate including a first connection line electrically connected to the first pad, and a second connection line electrically connected to the second pad, the line substrate positioned on the panel, wherein the inorganic film includes a first cut portion overlapping the first connection line, a second cut portion overlapping the second connection line, and a first extension portion between the first cut portion and the second cut portion, and the first cut portion, the second cut portion, and the first extension portion extend to a first side of the panel.
    Type: Application
    Filed: June 15, 2022
    Publication date: September 29, 2022
    Applicant: Japan Display Inc.
    Inventor: Takanori TSUNASHIMA
  • Patent number: 11450135
    Abstract: A fingerprint detection apparatus comprising: an insulating substrate; a plurality of photoelectric conversion elements arrayed in a detection region of the insulating substrate, each of the photoelectric conversion elements configured to output a signal in accordance with light incident on each of the photoelectric conversion elements; first switching element, each corresponding to each of the photoelectric conversion elements and including a first semiconductor made of oxide semiconductor; a plurality of gate lines coupled with the first switching elements and extending in a first direction; a plurality of signal lines coupled with the first switching elements and extending in a second direction intersecting the first direction; and a gate line drive circuit including a second switching element that includes a second semiconductor made of polycrystalline silicone, the gate line drive circuit being provided in a peripheral region outside the detection region and configured to drive the gate lines.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: September 20, 2022
    Assignee: Japan Display Inc.
    Inventors: Makoto Uchida, Takanori Tsunashima, Masahiro Tada, Tomoyuki Ito, Takashi Nakamura
  • Patent number: 11436859
    Abstract: A fingerprint detection device includes a substrate, a plurality of photoelectric conversion elements that are provided to the substrate and each output a signal corresponding to light emitted thereto, a plurality of signal lines coupled to the photoelectric conversion elements, a detection circuit that is electrically coupled to the photoelectric conversion elements through the signal lines, and a signal line selection circuit that switches the number of the signal lines to be coupled to the one detection circuit.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: September 6, 2022
    Assignee: Japan Display Inc.
    Inventors: Takashi Nakamura, Makoto Uchida, Takanori Tsunashima, Hirofumi Kato, Akio Takimoto
  • Patent number: 11393852
    Abstract: According to one embodiment, a semiconductor device including, a panel including an inorganic film, and a first pad and a second pad positioned on the inorganic film, and a line substrate including a first connection line electrically connected to the first pad, and a second connection line electrically connected to the second pad, the line substrate positioned on the panel, wherein the inorganic film includes a first cut portion overlapping the first connection line, a second cut portion overlapping the second connection line, and a first extension portion between the first cut portion and the second cut portion, and the first cut portion, the second cut portion, and the first extension portion extend to a first side of the panel.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: July 19, 2022
    Assignee: JAPAN DISPLAY INC.
    Inventor: Takanori Tsunashima
  • Patent number: 11347124
    Abstract: According to one embodiment, an electronic apparatus includes a camera and a liquid crystal panel including a display portion which overlaps the camera. The liquid crystal panel includes a first transparent electrode which overlaps the camera and a light-shielding layer including a first opening having a circular shape and superposed on the first transparent electrode.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: May 31, 2022
    Assignee: Japan Display Inc.
    Inventor: Takanori Tsunashima
  • Patent number: 11340503
    Abstract: According to one embodiment, a display device including a first substrate including a first electrode, a second electrode located above the first electrode and having potential different from the first electrode, and a third electrode located above the second electrode and electrically connected to the first electrode, a second substrate facing the first substrate, and a liquid crystal layer held between the first substrate and the second substrate, wherein at least one of the second electrode and the third electrode includes a first side, and a second side which faces the first side and is not parallel to the first side.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: May 24, 2022
    Assignee: Japan Display Inc.
    Inventors: Makoto Uchida, Takanori Tsunashima
  • Publication number: 20220155645
    Abstract: According to one embodiment, an electronic device includes a liquid crystal panel and a camera. The liquid crystal panel includes a display area and an incident light control area. The camera overlaps the incident light control area. The display area includes a pixel electrode. The incident light control area includes a first control electrode which is different in shape from the pixel electrode, a second control electrode, and a common electrode. A voltage applied to the first control electrode and a voltage applied to the second control electrode are different in polarity from a common voltage applied to the common electrode.
    Type: Application
    Filed: February 8, 2022
    Publication date: May 19, 2022
    Applicant: Japan Display Inc.
    Inventor: Takanori TSUNASHIMA