Patents by Inventor Hiroshi Tabatake

Hiroshi Tabatake 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: 11489034
    Abstract: In the second area, the lower base surface of the wirings is in contact with the first inorganic insulating film including a stepped portion including upper surfaces having mutually different heights and being adjacent to each other in the second direction, and a stepped surface rising from the upper surfaces except the uppermost surface. The first inorganic insulating film constitutes at least the upper surfaces except the lowest surface, and the stepped surface. The adjacent wirings include a pair of convex portions protruding toward a direction facing each other. One and the other of the pair of convex portions are separated to face each other at a position where the stepped portion does not exist in the second area in the first inorganic insulating film.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: November 1, 2022
    Assignee: Japan Display Inc.
    Inventor: Hiroshi Tabatake
  • Publication number: 20220326796
    Abstract: According to one embodiment, a display device includes a base, a display unit containing pixels, a power supply circuit, a touch controller and a switching circuit disposed between the display unit, the power supply circuit and the touch controller. The pixels each includes a pixel circuit and a display element including a lower electrode connected to the pixel circuit, an upper electrode disposed to oppose the lower electrode and an organic layer including a light-emitting layer disposed between the lower electrode and the upper electrode. The upper electrode is connected to the switching circuit, and the switching circuit selectively switches between connecting the upper electrode to the power supply circuit and connecting the upper electrode to the touch controller.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 13, 2022
    Applicant: Japan Display Inc.
    Inventors: Hiroshi TABATAKE, Hideyuki TAKAHASHI
  • Publication number: 20220319412
    Abstract: According to one embodiment, a display device includes a base, a plurality of pixels, a power supply line and a power supply line drive circuit. The pixels each include a pixel circuit, a display element including a lower electrode, an upper electrode and an organic layer including a light-emitting layer. The upper electrode is connected to the power supply line that provides a predetermined potential to the upper electrode. The power supply line drive circuit supplies, to the power supply line, a first potential to the upper electrode during a light-emitting period and supplies, to the power supply line, a second potential to the upper electrode during a non-light-emitting period.
    Type: Application
    Filed: March 24, 2022
    Publication date: October 6, 2022
    Applicant: Japan Display Inc.
    Inventors: Hiroshi TABATAKE, Tetsuo MORITA
  • Publication number: 20220320472
    Abstract: According to one embodiment, a display device includes a base, a wiring layer disposed on the base, and in which a plurality of wiring lines are disposed, a display element disposed on the wiring layer and including an organic layer and a metal wiring line disposed to surround the display element, and the wiring layer includes a first portion in which wiring lines are densely arranged and a second portion in which wiring lines are sparsely arranged, and a width of a portion of the metal wiring line, which is disposed on a side of the second portion is greater than a width of a portion of the metal wiring line, disposed on a side of the first portion.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 6, 2022
    Applicant: Japan Display Inc.
    Inventors: Hiroshi TABATAKE, Sho YANAGISAWA
  • Publication number: 20220310766
    Abstract: A display includes a plurality of first wirings which are provided on a first layer and each of which is arranged parallel to a first direction in a first area, and which are arranged on a second layer in a second area; a second wiring which is provided in the first layer in the first area and which is provided on a layer in the second area; and a third wiring which is provided on the first layer and arranged between the first wirings in the first area and which is arranged to intersect with first wirings in the second area. The first wirings is arranged to be inclined to the same side in the first direction in the second area. The second wiring is arranged to intersect with a portion of the plurality of first wirings in a plan view, in the second area.
    Type: Application
    Filed: June 16, 2022
    Publication date: September 29, 2022
    Applicant: Japan Display Inc.
    Inventors: Masumi NISHIMURA, Hiroshi TABATAKE, Akihito SATO
  • Patent number: 11393892
    Abstract: A display includes a plurality of first wirings which are provided on a first layer and each of which is arranged parallel to a first direction in a first area, and which are arranged on a second layer in a second area; a second wiring which is provided in the first layer in the first area and which is provided on a layer in the second area; and a third wiring which is provided on the first layer and arranged between the first wirings in the first area and which is arranged to intersect with first wirings in the second area. The first wirings is arranged to be inclined to the same side in the first direction in the second area. The second wiring is arranged to intersect with a portion of the plurality of first wirings in a plan view, in the second area.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: July 19, 2022
    Assignee: JAPAN DISPLAY INC.
    Inventors: Masumi Nishimura, Hiroshi Tabatake, Akihito Sato
  • Publication number: 20220157900
    Abstract: According to one embodiment, a display device includes a base, a first insulating layer, a first pixel electrode on the first insulating layer in a pixel, a second pixel electrode on the first insulating layer in a dummy pixel, a second insulating layer on the first insulating layer, a first organic layer in the pixel and in contact with the first pixel electrode, a second organic layer in the dummy pixel, a partition wall on the second insulating layer and between the organic layers and a common electrode covering the organic layers and the partition wall. An end portion of the first organic layer is in contact with a side surface of the partition wall.
    Type: Application
    Filed: November 16, 2021
    Publication date: May 19, 2022
    Applicant: Japan Display Inc.
    Inventors: Sho YANAGISAWA, Tetsuo MORITA, Kenji HARADA, Hiroshi TABATAKE, Hideyuki TAKAHASHI
  • Publication number: 20220157899
    Abstract: According to one embodiment, a display device includes a substrate, first and second insulating layers, first and second pixel electrodes, first and second organic layers, first and second feed lines, first and second partitions, and a common electrode including first and second parts covering the first and second organic layers. The first organic layer is between the partitions. The second feed line and the second partition are located between the organic layers. The partitions are shaped such that a width of an upper part is greater than a width of a lower part. The first part is in contact with the first feed line between the first partition and the first organic layer.
    Type: Application
    Filed: October 20, 2021
    Publication date: May 19, 2022
    Applicant: Japan Display Inc.
    Inventors: Sho YANAGISAWA, Tetsuo MORITA, Kenji HARADA, Hiroshi TABATAKE, Hideyuki TAKAHASHI
  • Publication number: 20220149127
    Abstract: A display device includes: pixel electrodes; a first insulation layer having openings corresponding to the respective plurality of pixel electrodes, the first insulation layer being on each periphery of the plurality of pixel electrodes; a second insulation layer on an upper surface of the first insulation layer except for a part thereof; and an electroluminescence layer including light-emitting layers overlapping with the pixel electrodes. Each of the light-emitting layers and another one of the light-emitting layers in different light-emitting colors are adjacent to each other, constituting a pair of different-color-emitting layers. The openings include a pair of different-color openings that overlap with the respective pair of different-color-emitting layers. The second insulation layer is at least between the pair of different-color openings and is adjacent to each of the pair of different-color openings entirely along mutually opposed sides of the pair of different-color openings.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Yasuhiro OGAWA, Hiroshi TABATAKE, Akihito SATO
  • Publication number: 20220005994
    Abstract: According to one embodiment, a display device includes a substrate, a pixel electrode disposed on the substrate, a light emitting element mounted on the pixel electrode, a drive transistor configured to control a current supplied to the light emitting element through the pixel electrode, and a conductive layer formed between the pixel electrode and the drive transistor so as to at least partially overlap with the pixel electrode in a planar view. The conductive layer does not overlap with a region of the pixel electrode on which the light emitting element is mounted in a planar view.
    Type: Application
    Filed: September 16, 2021
    Publication date: January 6, 2022
    Inventors: Tetsuo MORITA, Hiroshi TABATAKE, Yasuhiro OGAWA
  • Publication number: 20210408165
    Abstract: A drive circuit includes a holding capacitor, an element capacitor, and an additional capacitor interposed between one of the source and the drain, and one of the high-potential line and the low-potential line. The drive circuit configured to drive the first light emitter includes a first element capacitor as the element capacitor and a first additional capacitor as the additional capacitor. The driving circuit configured to drive the second light emitter includes a second element capacitor as the element capacitor and a second additional capacitor as the additional capacitor. The first element capacitor is larger in capacitance than the second element capacitor. The first additional capacitor is smaller in capacitance than the second additional capacitor.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Inventors: Hiroshi TABATAKE, Tetsuo Morita, Yasuhiro Ogawa
  • Patent number: 11127810
    Abstract: A lower base surface of wirings includes a stepped portion with upper surfaces having mutually different heights and stepped surfaces rising from respective upper surfaces. Each upper surface and the stepped surface form a projecting portion rising in each normal direction and constitute a first recessed corner portion immediately below the wirings and a second recessed corner portion at the tip of the projecting portion in the normal direction of the stepped surface. A first interval exists between the adjacent wirings. The first recessed corner portion has a first height. The second recessed corner portion has a second height and a second width in the first direction. The second width is smaller than the first interval, the second height is lower than the first height, or both the second width is smaller than the first interval and the second height is lower than the first height.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: September 21, 2021
    Assignee: Japan Display Inc.
    Inventors: Akihito Sato, Tetsuo Morita, Hiroshi Tabatake
  • Publication number: 20210280131
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Application
    Filed: May 10, 2021
    Publication date: September 9, 2021
    Applicant: JAPAN DISPLAY INC.
    Inventors: Kazuyoshi OMATA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE
  • Publication number: 20210159297
    Abstract: Provided is a display device including a plurality of pixels at least one of which has a first transistor and a light-emitting element. The first transistor includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a first terminal and a second terminal electrically connected to the semiconductor film. The second terminal is electrically connected to the light-emitting element. A region in which the first terminal overlaps with the gate electrode can be smaller than a region in which the second terminal overlaps with the gate electrode.
    Type: Application
    Filed: February 2, 2021
    Publication date: May 27, 2021
    Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
  • Patent number: 11004394
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: May 11, 2021
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
  • Publication number: 20210083025
    Abstract: The first light-emitting layer is higher in light-emission start voltage than each of the second light-emitting layer and the third light-emitting layer. The second light-emitting layer is higher in visibility of the emission color than each of the first light-emitting layer and the third light-emitting layer. The electroluminescence layer has an inter-pixel section between an adjacent pair of the openings and along the upper surface of the insulation layer. The inter-pixel section between the first opening and the second opening has a first resistance value. The inter-pixel section between the second opening and the third opening has a second resistance value. The inter-pixel section between the third opening and the first opening has a third resistance value. The first resistance value is larger than each of the second resistance value and the third resistance value.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 18, 2021
    Applicant: Japan Display Inc.
    Inventors: Kenji NAKAO, Hiroshi TABATAKE, Akihito SATO
  • Publication number: 20210074738
    Abstract: Provided is a display device including: a capacitor having a first electrode, a first insulating film over the first electrode, and a second electrode over the first insulating film; and a first transistor over the capacitor. The first transistor includes the second electrode a second insulating film over the second electrode, an oxide semiconductor film over the second insulating film, and a first source electrode and a first drain electrode over the oxide semiconductor film. The first source electrode and the first drain electrode are electrically connected to the oxide semiconductor film.
    Type: Application
    Filed: November 19, 2020
    Publication date: March 11, 2021
    Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE, Yasuhiro OGAWA
  • Patent number: 10943966
    Abstract: Provided is a display device including a plurality of pixels at least one of which has a first transistor and a light-emitting element. The first transistor includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a first terminal and a second terminal electrically connected to the semiconductor film. The second terminal is electrically connected to the light-emitting element. A region in which the first terminal overlaps with the gate electrode can be smaller than a region in which the second terminal overlaps with the gate electrode.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: March 9, 2021
    Assignee: Japan Display Inc.
    Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
  • Patent number: 10872911
    Abstract: Provided is a display device including: a capacitor having a first electrode, a first insulating film over the first electrode, and a second electrode over the first insulating film; and a first transistor over the capacitor. The first transistor includes the second electrode, a second insulating film over the second electrode, an oxide semiconductor film over the second insulating film, and a first source electrode and a first drain electrode over the oxide semiconductor film. The first source electrode and the first drain electrode are electrically connected to the oxide semiconductor film.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: December 22, 2020
    Assignee: Japan Display Inc.
    Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa
  • Patent number: 10854140
    Abstract: Disclosed is a display device including: a driving transistor, a first switching transistor, and a pixel transistor each having a gate and a pair of terminals; a storage capacitor having a pair of terminals; and a light-emitting element having an input terminal and an output terminal. One terminal of the driving transistor is electrically connected to one terminal of the pixel transistor. The other terminal of the driving transistor is electrically connected to one terminal of the first switching transistor and the input terminal of the light-emitting element. The other terminal of the first switching transistor is electrically connected to the gate of the driving transistor and one terminal of the capacitor. The one terminal of the capacitor overlaps with an active region of the driving transistor.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: December 1, 2020
    Assignee: Japan Display Inc.
    Inventors: Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake, Yasuhiro Ogawa