Patents by Inventor Toshihiko Itoga

Toshihiko Itoga 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: 20230225213
    Abstract: According to one embodiment, a method of manufacturing a piezoelectric element, includes forming lower electrodes on an insulating substrate, applying a precursor solution on the insulating substrate and the lower electrodes, drying the precursor solution by firing, thus forming a first precursor layer, patterning the first precursor layer into a shape of a plurality of islands located on the lower electrodes, respectively and crystallizing the island-shaped first precursor layer by firing, thus forming first piezoelectric layers.
    Type: Application
    Filed: January 11, 2023
    Publication date: July 13, 2023
    Applicant: Japan Display Inc.
    Inventor: Toshihiko ITOGA
  • Publication number: 20220223782
    Abstract: The purpose of the present invention is to form a semiconductor device in which an active area laminated on a PZT (lead zirconate titanate (PbZrTiO3) sensor having a piezoelectric effect. The main structure of the present invention is as follows. A semiconductor device having a PZT (lead zirconate titanate (PbZrTiO3)) sensor including: the PZT sensor including a lower electrode formed on a glass substrate, a PZT, an upper electrode, a first inorganic insulating film covering the upper electrode, and an upper wiring formed on the first inorganic insulating film and connected to the upper electrode through a first through-hole formed in the first inorganic insulating film; in which a polyimide film is formed over the PZT sensor; a plurality of TFTs are formed on the polyimide film, and a thickness of the polyimide film is 5 ?m or more.
    Type: Application
    Filed: March 30, 2022
    Publication date: July 14, 2022
    Applicant: Japan Display Inc.
    Inventors: Toshihiko ITOGA, Takuo KAITOH
  • Publication number: 20220077266
    Abstract: A display device includes a substrate having flexibility, a transistor having agate insulating film and further having a semiconductor layer and a gate electrode that sandwich the gate insulating film, the transistor formed in an area where the substrate is bent, and a gate wiring line so formed on the substrate as to be connected to the gate electrode, and the gate electrode has an area that is present in an area where the gate electrode overlaps with the semiconductor layer and is thinner than at least part of the gate wiring line.
    Type: Application
    Filed: November 19, 2021
    Publication date: March 10, 2022
    Applicant: Japan Display Inc.
    Inventors: Yasukazu KIMURA, Masato HIRAMATSU, Takuma NISHINOHARA, Toshihiko ITOGA
  • Patent number: 11217646
    Abstract: A display device includes a substrate having flexibility, a transistor having a gate insulating film and further having a semiconductor layer and a gate electrode that sandwich the gate insulating film, the transistor formed in an area where the substrate is bent, and a gate wiring line so formed on the substrate as to be connected to the gate electrode, and the gate electrode has an area that is present in an area where the gate electrode overlaps with the semiconductor layer and is thinner than at least part of the gate wiring line.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: January 4, 2022
    Assignee: Japan Display Inc.
    Inventors: Yasukazu Kimura, Masato Hiramatsu, Takuma Nishinohara, Toshihiko Itoga
  • Publication number: 20200135828
    Abstract: A display device includes a substrate having flexibility, a transistor having a gate insulating film and further having a semiconductor layer and a gate electrode that sandwich the gate insulating film, the transistor formed in an area where the substrate is bent, and a gate wiring line so formed on the substrate as to be connected to the gate electrode, and the gate electrode has an area that is present in an area where the gate electrode overlaps with the semiconductor layer and is thinner than at least part of the gate wiring line.
    Type: Application
    Filed: December 31, 2019
    Publication date: April 30, 2020
    Applicant: Japan Display Inc.
    Inventors: Yasukazu KIMURA, Masato HIRAMATSU, Takuma NISHINOHARA, Toshihiko ITOGA
  • Patent number: 10586839
    Abstract: A display device includes: a flexible substrate; a pixel over the flexible substrate, the pixel including a transistor and a display element; a first wiring for transmitting a signal to the pixel, the first wiring extending in a first direction; a second wiring extending in a second direction intersecting the first direction; an inorganic insulating layer on a higher level than the first wiring or the second wiring; and an organic insulating layer on a higher level than the inorganic insulating layer, wherein the inorganic insulating layer has an opening exposing a part of the upper surface of the first wiring or the second wiring is exposed, and the organic insulating layer is provided in such a way as to fill the opening.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: March 10, 2020
    Assignee: Japan Display Inc.
    Inventors: Yasukazu Kimura, Takuma Nishinohara, Toshihiko Itoga, Hajime Akimoto
  • Patent number: 10566400
    Abstract: A display device includes a substrate having flexibility, a transistor having a gate insulating film and further having a semiconductor layer and a gate electrode that sandwich the gate insulating film, the transistor formed in an area where the substrate is bent, and a gate wiring line so formed on the substrate as to be connected to the gate electrode, and the gate electrode has an area that is present in an area where the gate electrode overlaps with the semiconductor layer and is thinner than at least part of the gate wiring line.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: February 18, 2020
    Assignee: Japan Display Inc.
    Inventors: Yasukazu Kimura, Masato Hiramatsu, Takuma Nishinohara, Toshihiko Itoga
  • Publication number: 20190312092
    Abstract: A display device includes: a flexible substrate; a pixel over the flexible substrate, the pixel including a transistor and a display element; a first wiring for transmitting a signal to the pixel, the first wiring extending in a first direction; a second wiring extending in a second direction intersecting the first direction; an inorganic insulating layer on a higher level than the first wiring or the second wiring; and an organic insulating layer on a higher level than the inorganic insulating layer, wherein the inorganic insulating layer has an opening exposing a part of the upper surface of the first wiring or the second wiring is exposed, and the organic insulating layer is provided in such a way as to fill the opening.
    Type: Application
    Filed: June 25, 2019
    Publication date: October 10, 2019
    Inventors: Yasukazu KIMURA, Takuma NISHINOHARA, Toshihiko ITOGA, Hajime AKIMOTO
  • Patent number: 10374023
    Abstract: A display device includes: a flexible substrate; a pixel over the flexible substrate, the pixel including a transistor and a display element; a first wiring for transmitting a signal to the pixel, the first wiring extending in a first direction; a second wiring extending in a second direction intersecting the first direction; an inorganic insulating layer on a higher level than the first wiring or the second wiring; and an organic insulating layer on a higher level than the inorganic insulating layer, wherein the inorganic insulating layer has an opening exposing a part of the upper surface of the first wiring or the second wiring is exposed, and the organic insulating layer is provided in such a way as to fill the opening.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: August 6, 2019
    Assignee: Japan Display Inc.
    Inventors: Yasukazu Kimura, Takuma Nishinohara, Toshihiko Itoga, Hajime Akimoto
  • Patent number: 10355249
    Abstract: A manufacturing method of an organic EL display device according to an embodiment of the present invention includes: disposing a first organic substrate having flexibility on a glass substrate; disposing a barrier layer on the first organic substrate; disposing a second organic substrate having flexibility on the barrier layer such that a thickness of a terminal section area is thinner than a thickness of a pixel section area, or at least a part of the terminal section area is not covered; disposing a pixel control section on the terminal section area of the second organic substrate and a pixel generating section on the pixel section area, respectively; disposing a circuit section at least on the terminal section area, the circuit section having a thin film transistor, wherein the circuit section is formed directly on the second organic substrate.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: July 16, 2019
    Assignee: Japan Display Inc.
    Inventors: Hiroki Nakaie, Toshihiko Itoga
  • Publication number: 20180294445
    Abstract: A manufacturing method of an organic EL display device according to an embodiment of the present invention includes: disposing a first organic substrate having flexibility on a glass substrate; disposing a barrier layer on the first organic substrate; disposing a second organic substrate having flexibility on the barrier layer such that a thickness of a terminal section area is thinner than a thickness of a pixel section area, or at least a part of the terminal section area is not covered; disposing a pixel control section on the terminal section area of the second organic substrate and a pixel generating section on the pixel section area, respectively; disposing a circuit section at least on the terminal section area, the circuit section having a thin film transistor, wherein the circuit section is formed directly on the second organic substrate.
    Type: Application
    Filed: April 3, 2018
    Publication date: October 11, 2018
    Applicant: Japan Display Inc.
    Inventors: Hiroki NAKAIE, Toshihiko ITOGA
  • Patent number: 9972667
    Abstract: A display device includes a substrate having an insulating surface; a plurality of pixel electrodes on the insulating surface, the plurality of pixel electrodes located away from each other; a first insulating layer covering an end of each of the pixel electrodes and exposing a part of a top surface of each of the pixel electrodes; and an organic layer provided on each of the pixel electrodes, the organic layer including a light emitting layer. As seen in a plan view, the first insulating layer includes a plurality of first regions, each of the plurality of first regions being around the exposed part of the top surface of the pixel electrodes, and a second region located between two adjacent first regions, the second region including a recessed portion.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: May 15, 2018
    Assignee: Japan Display Inc.
    Inventors: Yasukazu Kimura, Takuma Nishinohara, Toshihiko Itoga, Hajime Akimoto
  • Publication number: 20180097048
    Abstract: A display device includes a substrate having an insulating surface; a plurality of pixel electrodes on the insulating surface, the plurality of pixel electrodes located away from each other; a first insulating layer covering an end of each of the pixel electrodes and exposing a part of a top surface of each of the pixel electrodes; and an organic layer provided on each of the pixel electrodes, the organic layer including a light emitting layer. As seen in a plan view, the first insulating layer includes a plurality of first regions, each of the plurality of first regions being around the exposed part of the top surface of the pixel electrodes, and a second region located between two adjacent first regions, the second region including a recessed portion.
    Type: Application
    Filed: September 12, 2017
    Publication date: April 5, 2018
    Inventors: Yasukazu Kimura, Takuma Nishinohara, Toshihiko Itoga, Hajime Akimoto
  • Publication number: 20180069066
    Abstract: A display device includes: a flexible substrate; a pixel over the flexible substrate, the pixel including a transistor and a display element; a first wiring for transmitting a signal to the pixel, the first wiring extending in a first direction; a second wiring extending in a second direction intersecting the first direction; an inorganic insulating layer on a higher level than the first wiring or the second wiring; and an organic insulating layer on a higher level than the inorganic insulating layer, wherein the inorganic insulating layer has an opening exposing a part of the upper surface of the first wiring or the second wiring is exposed, and the organic insulating layer is provided in such a way as to fill the opening.
    Type: Application
    Filed: October 31, 2017
    Publication date: March 8, 2018
    Inventors: Yasukazu KIMURA, Takuma NISHINOHARA, Toshihiko ITOGA, Hajime AKIMOTO
  • Patent number: 9837475
    Abstract: A display device includes: a flexible substrate; a pixel over the flexible substrate, the pixel including a transistor and a display element; a first wiring for transmitting a signal to the pixel, the first wiring extending in a first direction; a second wiring extending in a second direction intersecting the first direction; an inorganic insulating layer on a higher level than the first wiring or the second wiring; and an organic insulating layer on a higher level than the inorganic insulating layer, wherein the inorganic insulating layer has an opening exposing a part of the upper surface of the first wiring or the second wiring is exposed, and the organic insulating layer is provided in such a way as to fill the opening.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 5, 2017
    Assignee: Japan Display Inc.
    Inventors: Yasukazu Kimura, Takuma Nishinohara, Toshihiko Itoga, Hajime Akimoto
  • Publication number: 20170287999
    Abstract: A display device includes a substrate having flexibility, a transistor having a gate insulating film and further having a semiconductor layer and a gate electrode that sandwich the gate insulating film, the transistor formed in an area where the substrate is bent, and a gate wiring line so formed on the substrate as to be connected to the gate electrode, and the gate electrode has an area that is present in an area where the gate electrode overlaps with the semiconductor layer and is thinner than at least part of the gate wiring line.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 5, 2017
    Applicant: Japan Display Inc.
    Inventors: Yasukazu KIMURA, Masato HIRAMATSU, Takuma NISHINOHARA, Toshihiko ITOGA
  • Publication number: 20170221974
    Abstract: A display device is comprising an insulating layer provided above a substrate, a pixel electrode provided on the insulating layer, a bank layer covering a periphery edge part of the pixel electrode, a light emitting layer provided across to a surface layer part of the bank layer from the pixel electrode, and a common electrode provided on the light emitting layer, wherein the pixel electrode including a slanting region having a periphery edge part becoming higher compared to a center region, and an edge part of the bank layer overlaps the slanting region of the pixel electrode.
    Type: Application
    Filed: April 20, 2017
    Publication date: August 3, 2017
    Inventors: Yasukazu KIMURA, Norio Oku, Toshihiko Itoga, Takeshi Kuriyagawa, Jun Fujiyoshi, Takuma Nishinohara
  • Publication number: 20170179210
    Abstract: A display device includes: a flexible substrate; a pixel over the flexible substrate, the pixel including a transistor and a display element; a first wiring for transmitting a signal to the pixel, the first wiring extending in a first direction; a second wiring extending in a second direction intersecting the first direction; an inorganic insulating layer on a higher level than the first wiring or the second wiring; and an organic insulating layer on a higher level than the inorganic insulating layer, wherein the inorganic insulating layer has an opening exposing a part of the upper surface of the first wiring or the second wiring is exposed, and the organic insulating layer is provided in such a way as to fill the opening.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 22, 2017
    Inventors: Yasukazu KIMURA, Takuma NISHINOHARA, Toshihiko ITOGA, Hajime AKIMOTO
  • Patent number: 9685631
    Abstract: A display device is provided including a first substrate comprising a resin material provided with a plurality region provided with a plurality of pixels including a display device, and a second substrate provided facing the first substrate and installed with the pixel region, wherein an outer periphery side surface of the first substrate having a taper shape and including a barrier layer covering an upper layer, lower layer and the outer periphery side surface of the first substrate.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: June 20, 2017
    Assignee: Japan Display Inc.
    Inventors: Takuma Nishinohara, Toshihiko Itoga, Norio Oku, Yasukazu Kimura, Jun Fujiyoshi
  • Publication number: 20170069874
    Abstract: A display device is provided including a first substrate comprising a resin material provided with a plurality region provided with a plurality of pixels including a display device, and a second substrate provided facing the first substrate and installed with the pixel region, wherein an outer periphery side surface of the first substrate having a taper shape and including a barrier layer covering an upper layer, lower layer and the outer periphery side surface of the first substrate.
    Type: Application
    Filed: November 18, 2016
    Publication date: March 9, 2017
    Inventors: Takuma NISHINOHARA, Toshihiko ITOGA, Norio OKU, Yasukazu KIMURA, Jun FUJIYOSHI