Patents by Inventor Takamasa SUNDA

Takamasa SUNDA 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: 11715814
    Abstract: A light emitting element includes: a substrate including a first surface including a first region and a second region; a first semiconductor layered body on the first region, the first semiconductor layered body comprising a first light emitting layer and including: a first lateral surface, and a second lateral surface opposite to the first lateral surface; and a second semiconductor layered body on the second region, the second semiconductor layered body comprising a second light emitting layer and including: a first lateral surface facing the second lateral surface and located on a first semiconductor layered body side of the second semiconductor layered body, and a second lateral surface opposite to the first lateral surface and located on a side opposite the first semiconductor layered body side of the second semiconductor layered body.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: August 1, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Takamasa Sunda, Hitoshi Nagai
  • Patent number: 11145513
    Abstract: A method of manufacturing a semiconductor device includes forming a photoresist defining an opening on an upper surface of a semiconductor wafer; and forming an electrode in the opening using a plating technique, in which the step of forming the electrode includes forming a first plated layer at a first current density such that the first plated layer has a first thickness, and forming a second plated layer on an upper surface of the first plated layer at a second current density higher than the first current density such that the second plated layer has a second thickness greater than the first thickness.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: October 12, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Takamasa Sunda, Yoshinori Fukui, Shinya Asakawa
  • Publication number: 20210111307
    Abstract: A light emitting element includes: a substrate including a first surface including a first region and a second region; a first semiconductor layered body on the first region, the first semiconductor layered body comprising a first light emitting layer and including: a first lateral surface, and a second lateral surface opposite to the first lateral surface; and a second semiconductor layered body on the second region, the second semiconductor layered body comprising a second light emitting layer and including: a first lateral surface facing the second lateral surface and located on a first semiconductor layered body side of the second semiconductor layered body, and a second lateral surface opposite to the first lateral surface and located on a side opposite the first semiconductor layered body side of the second semiconductor layered body.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Takamasa SUNDA, Hitoshi NAGAI
  • Patent number: 10910536
    Abstract: The light emitting element includes: first and second light emitting cells each including an n-side semiconductor layer, an active layer and a p-side semiconductor layer; a first insulating film covering the first and second light emitting cells, and provided with first p-side and first n-side openings; a wiring electrode connected to the first light emitting cell at the first n-side opening, and connected to the second light emitting cell at the first p-side opening; a first electrode connected to the first light emitting cell; a second electrode connected to the second light emitting cell; a second insulating film provided with a second p-side opening formed above the first electrode, a second n-side opening formed above the second electrode, and a third opening formed above the wiring electrode; a first external connection portion connected to the first electrode; and a second external connection portion connected to the second electrode.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: February 2, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Keiji Emura, Takao Misaki, Takamasa Sunda, Yoshinori Fukui
  • Patent number: 10903394
    Abstract: A light emitting element includes: a substrate including a first surface including a first region and a second region; a first semiconductor layered body on the first region of the first surface of the substrate; and a second semiconductor layered body on the second region of the first surface of the substrate. A first angle defined by a first lateral surface of the first semiconductor layered body and the first region is smaller than a second angle defined by a second lateral surface of the first semiconductor layered body and the first region. A fourth angle defined by a second lateral surface of the second semiconductor layered body and the second region is smaller than a third angle defined by a first lateral surface of the second semiconductor layered body and the second region.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: January 26, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Takamasa Sunda, Hitoshi Nagai
  • Publication number: 20200098568
    Abstract: A method of manufacturing a semiconductor device includes forming a photoresist defining an opening on an upper surface of a semiconductor wafer; and forming an electrode in the opening using a plating technique, in which the step of forming the electrode includes forming a first plated layer at a first current density such that the first plated layer has a first thickness, and forming a second plated layer on an upper surface of the first plated layer at a second current density higher than the first current density such that the second plated layer has a second thickness greater than the first thickness.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 26, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Takamasa SUNDA, Yoshinori FUKUI, Shinya ASAKAWA
  • Publication number: 20190267527
    Abstract: The light emitting element includes: first and second light emitting cells each including an n-side semiconductor layer, an active layer and a p-side semiconductor layer; a first insulating film covering the first and second light emitting cells, and provided with first p-side and first n-side openings; a wiring electrode connected to the first light emitting cell at the first n-side opening, and connected to the second light emitting cell at the first p-side opening; a first electrode connected to the first light emitting cell; a second electrode connected to the second light emitting cell; a second insulating film provided with a second p-side opening formed above the first electrode, a second n-side opening formed above the second electrode, and a third opening formed above the wiring electrode; a first external connection portion connected to the first electrode; and a second external connection portion connected to the second electrode.
    Type: Application
    Filed: February 27, 2019
    Publication date: August 29, 2019
    Inventors: Keiji EMURA, Takao MISAKI, Takamasa SUNDA, Yoshinori FUKUI
  • Publication number: 20190259909
    Abstract: A light emitting element includes: a substrate including a first surface including a first region and a second region; a first semiconductor layered body on the first region of the first surface of the substrate; and a second semiconductor layered body on the second region of the first surface of the substrate. A first angle defined by a first lateral surface of the first semiconductor layered body and the first region is smaller than a second angle defined by a second lateral surface of the first semiconductor layered body and the first region. A fourth angle defined by a second lateral surface of the second semiconductor layered body and the second region is smaller than a third angle defined by a first lateral surface of the second semiconductor layered body and the second region.
    Type: Application
    Filed: February 19, 2019
    Publication date: August 22, 2019
    Applicant: NICHIA CORPORATION
    Inventors: Takamasa SUNDA, Hitoshi NAGAI
  • Patent number: 10164153
    Abstract: A light-emitting element includes: a semiconductor structure; light-reflecting electrodes; a first insulating film having: one or more first n-side openings and one or more first p-side openings; one or more interconnect electrodes on an upper surface of the first insulating film; a first electrode on the upper surface of the first insulating film; a second electrode on the upper surface of the first insulating film; a second insulating film having: one or more second n-side openings and one or more second p-side openings; a first external connection portion; and a second external connection portion.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: December 25, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Keiji Emura, Takamasa Sunda
  • Publication number: 20180182922
    Abstract: A light-emitting element includes: a semiconductor structure; light-reflecting electrodes; a first insulating film having: one or more first n-side openings and one or more first p-side openings; one or more interconnect electrodes on an upper surface of the first insulating film; a first electrode on the upper surface of the first insulating film; a second electrode on the upper surface of the first insulating film; a second insulating film having: one or more second n-side openings and one or more second p-side openings; a first external connection portion; and a second external connection portion.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 28, 2018
    Applicant: NICHIA CORPORATION
    Inventors: Keiji EMURA, Takamasa SUNDA
  • Patent number: 9929316
    Abstract: A light emitting element includes a substrate; a plurality of semiconductor light emitting cells; a plurality of light reflective electrodes; a first insulation layer that continuously covers lateral surfaces of the semiconductor light emitting cells, spaces between the semiconductor light emitting cells, lateral surfaces of the light reflective electrodes, and a portion of upper surfaces of the light reflective electrodes; a plurality of wiring electrodes, and cover the lateral surfaces of the semiconductor light emitting cells and the spaces between the semiconductor light emitting cells via the first insulation layer; and a light reflective metal layer that covers the lateral surfaces of at least two adjacent ones of the semiconductor light emitting cells and the space between said at least two semiconductor light emitting cells, via the first insulation layer.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: March 27, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Keiji Emura, Yoshiki Inoue, Takamasa Sunda
  • Publication number: 20170186915
    Abstract: A light emitting element includes a substrate; a plurality of semiconductor light emitting cells; a plurality of light reflective electrodes; a first insulation layer that continuously covers lateral surfaces of the semiconductor light emitting cells, spaces between the semiconductor light emitting cells, lateral surfaces of the light reflective electrodes, and a portion of upper surfaces of the light reflective electrodes; a plurality of wiring electrodes, and cover the lateral surfaces of the semiconductor light emitting cells and the spaces between the semiconductor light emitting cells via the first insulation layer; and a light reflective metal layer that covers the lateral surfaces of at least two adjacent ones of the semiconductor light emitting cells and the space between said at least two semiconductor light emitting cells, via the first insulation layer.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 29, 2017
    Applicant: NICHIA CORPORATION
    Inventors: Keiji EMURA, Yoshiki INOUE, Takamasa SUNDA