Patents by Inventor Yoshiyuki Aihara

Yoshiyuki Aihara 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: 20240113263
    Abstract: A light-emitting device includes a light-emitting element a semiconductor structure body including an n-side layer, a p-side layer, and an active layer, the n-side layer including an n-side exposed surface exposed from the active layer and the p-side layer in a plan view. The semiconductor structure body includes a side surface connecting the n-side exposed surface and an upper surface of the p-side layer. An insulating film includes a first opening exposing the n-side exposed surface, and a second opening positioned above the upper surface of the p-side layer. An n-side electrode includes a first part positioned above the upper surface of the p-side layer with the insulating film interposed, a second part electrically connected with the n-side exposed surface in the first opening and electrically connected with the first part located at the insulating film covering the side surface, and a third opening that exposes the insulating film covering the side surface of the semiconductor structure body.
    Type: Application
    Filed: September 13, 2023
    Publication date: April 4, 2024
    Applicant: NICHIA CORPORATION
    Inventor: Yoshiyuki AIHARA
  • Publication number: 20230343892
    Abstract: A method for manufacturing a light-emitting element includes: forming a semiconductor structure comprising a light-emitting layer on a first surface of a substrate, wherein the first surface comprising a plurality of protrusions and a second region; dividing the semiconductor structure into a plurality of light-emitting portions by removing a portion of the semiconductor structure so as to form an exposed region of the substrate, wherein the second region is exposed from under the semiconductor structure in the exposed region; bonding a light-transmitting body to a second surface of the substrate that is opposite the first surface so as to form a bonded body, wherein the light-transmitting body comprises a fluorescer; forming a plurality of modified regions along the exposed region; removing a portion of the light-transmitting body that overlaps the plurality of modified regions in a plan view; and singulating the bonded body along the modified regions.
    Type: Application
    Filed: June 28, 2023
    Publication date: October 26, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Yoshiki INOUE, Shun KITAHAMA, Yoshiyuki AIHARA, Yoshiki MATSUSHITA, Keisuke HIGASHITANI
  • Patent number: 11735686
    Abstract: A method for manufacturing a light-emitting element includes dividing a semiconductor structure into a plurality of light-emitting portions by removing a portion of the semiconductor structure so as to form an exposed region, a first surface being exposed from under the semiconductor structure in the exposed region; etching protrusions formed in the exposed region; bonding a light-transmitting body to a second surface so as to form a bonded body; forming a plurality of modified regions along the exposed region inside the substrate by irradiating a laser beam on the exposed region from the first surface side; removing a portion of the light-transmitting body that overlaps the plurality of modified regions in a plan view; and singulating the bonded body along the modified regions.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: August 22, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Yoshiki Inoue, Shun Kitahama, Yoshiyuki Aihara, Yoshiki Matsushita, Keisuke Higashitani
  • Publication number: 20210193867
    Abstract: A method for manufacturing a light-emitting element includes dividing a semiconductor structure into a plurality of light-emitting portions by removing a portion of the semiconductor structure so as to form an exposed region, a first surface being exposed from under the semiconductor structure in the exposed region; etching protrusions formed in the exposed region; bonding a light-transmitting body to a second surface so as to form a bonded body; forming a plurality of modified regions along the exposed region inside the substrate by irradiating a laser beam on the exposed region from the first surface side; removing a portion of the light-transmitting body that overlaps the plurality of modified regions in a plan view; and singulating the bonded body along the modified regions.
    Type: Application
    Filed: December 7, 2020
    Publication date: June 24, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Yoshiki INOUE, Shun KITAHAMA, Yoshiyuki AIHARA, Yoshiki MATSUSHITA, Keisuke HIGASHITANI
  • Patent number: 10665754
    Abstract: A side-view type light emitting device has a bottom surface thereof as a light emission surface and a first lateral surface thereof as a mounting surface for mounting on a mounting substrate, and includes a semiconductor layered structure including a first semiconductor layer, an active layer and a second semiconductor layer; a first connecting electrode exposed from the first lateral surface and electrically connected to the first semiconductor layer; a first electrode disposed between the first semiconductor layer and the first connecting electrode; a second connecting electrode exposed from the first lateral surface; a metal wire electrically connecting an upper surface of the second semiconductor layer to the second connecting electrode; and a resin layer. In a direction perpendicular to the light emission surface, the active layer does not overlap with the first connecting electrode, and the active layer does not overlap with the second connecting electrode.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: May 26, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Yoshiyuki Aihara, Shinji Nakamura, Akiyoshi Kinouchi, Kazuki Kashimoto, Kazuyuki Akaishi
  • Patent number: 10297737
    Abstract: A method of manufacturing one or more light emitting devices includes: forming one or more emitting elements, each including a first conductive type semiconductor layer, a second conductive type semiconductor layer, a first electrode, and a second electrode, on a growth substrate; forming a first metal layer electrically connected to each first electrode, and a second metal layer electrically connected to each second electrode; forming a first resin layer covering the one or more light emitting elements so as to expose an upper surface of each first metal layer and an upper surface of each second metal layer; connecting a first wire to the upper surface of each first metal layer, and connecting a second wire to the upper surface of each second metal layer; and forming a second resin layer on the first resin layer so as to expose an end portion of each first wire and second wire.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: May 21, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Yoshiyuki Aihara
  • Patent number: 10224470
    Abstract: A light emitting device includes a semiconductor chip including a p-type semiconductor layer and an n-type semiconductor layer, the semiconductor chip being adapted to emit light between the p-type semiconductor layer and the n-type semiconductor layer; a p-side pad electrode disposed on an upper surface side of the semiconductor chip and over the p-type semiconductor layer; an n-side pad electrode disposed on an upper surface side of the semiconductor chip and over the n-type semiconductor layer; a resin layer disposed to cover the upper surface of the semiconductor chip; a p-side connection electrode and an n-side connection electrode disposed at an outer surface of the resin layer and positioned on the upper surface side of the semiconductor chip; and a metal wire disposed in the resin. The metal wire is adapted to make connection at least one of between the p-side pad electrode and the p-side connection electrode, and between the n-side pad electrode and the n-side connection electrode.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: March 5, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Akiyoshi Kinouchi, Hisashi Kasai, Yoshiyuki Aihara, Hirokazu Sasa, Shinji Nakamura
  • Patent number: 10134954
    Abstract: A light emitting element for flip-chip mounting having a flat mounting surface which allows a decrease in the width of the streets of a wafer. In the light emitting element, the insulating member filling around the bumps and flattening the upper surface is formed with a margin of a region with a width which is equal to or larger than the width of the streets on the dividing lines, so that at the time of dividing the wafer along the dividing lines, the insulating member is not processed, which allows designing of the streets with a small width.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: November 20, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Shinji Nakamura, Akiyoshi Kinouchi, Yoshiyuki Aihara, Hirokazu Sasa
  • Patent number: 10115877
    Abstract: A method for manufacturing a semiconductor device includes: providing a support with a semiconductor light-emitting element including a first electrode and a second electrode; providing a base including a first interconnect terminal and a second interconnect terminal; forming a first metal layer on the support to cover the first and the second electrodes; forming a second metal layer on the base to cover the first and the second interconnect terminals; arranging the first and second electrodes and the first and second interconnect terminals to respectively face each other, and providing electrical connection therebetween by atomic diffusion; and rendering electrically insulative or removing portions of the first metal layer and the second metal layer that are outside thereof defined between the first and second electrodes and the first and second interconnect terminals.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: October 30, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Masatsugu Ichikawa, Yoshiki Inoue, Yoshiyuki Aihara, Takehito Shimatsu
  • Publication number: 20180159007
    Abstract: A method of manufacturing one or more light emitting devices includes: forming one or more emitting elements, each including a first conductive type semiconductor layer, a second conductive type semiconductor layer, a first electrode, and a second electrode, on a growth substrate; forming a first metal layer electrically connected to each first electrode, and a second metal layer electrically connected to each second electrode; forming a first resin layer covering the one or more light emitting elements so as to expose an upper surface of each first metal layer and an upper surface of each second metal layer; connecting a first wire to the upper surface of each first metal layer, and connecting a second wire to the upper surface of each second metal layer; and forming a second resin layer on the first resin layer so as to expose an end portion of each first wire and second wire.
    Type: Application
    Filed: February 1, 2018
    Publication date: June 7, 2018
    Applicant: NICHIA CORPORATION
    Inventors: Akinori YONEDA, Yoshiyuki AIHARA
  • Patent number: 9923134
    Abstract: A light emitting device is constituted with a semiconductor light emitting element on which a support member is disposed on one surface provided with a p-side electrode and an n-side electrode and a fluorescent material layer is disposed on the other surface which is an opposite side of the one surface. The support member includes a resin layer, an electrode for p-side external connection and an electrode for n-side external connection disposed exposed at a surface opposite side of a surface where the resin layer is in touch with a light emitting element, and internal wirings disposed in the resin layer and electrically connecting between a p-side electrode and the electrode for p-side external connection respectively. The internal wirings include a metal wire and a metal plated layer, and a metal wire and a metal plated layer respectively connected in series.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: March 20, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Yoshiyuki Aihara
  • Patent number: 9887337
    Abstract: A manufacturing method of a light emitting device includes preparing a wafer that is provided by arranging a plurality of semiconductor light emitting elements including semiconductor stacks and electrodes provided on first surfaces of the semiconductor stacks. A metal wire is wired in an arc shape between the electrodes of the plurality of semiconductor light emitting elements that are arranged in one direction on the wafer so as to connect each of the electrodes and the metal wire. A resin layer is provided on a side of the first surfaces of the semiconductor stacks in such a way that the metal wire is accommodated inside the resin layer. The wafer is cut along a boundary line to segment the plurality of semiconductor light emitting elements so as to singulate the plurality of semiconductor light emitting elements.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: February 6, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Yoshiyuki Aihara, Shinji Nakamura
  • Patent number: 9831379
    Abstract: A method of manufacturing a light emitting device includes providing a wafer having a substrate and a plurality of semiconductor stacked-layer bodies stacked on the substrate, an upper surface of the substrate being exposed at an outer peripheral region of each of the plurality of semiconductor stack bodies in a plan view, forming a separation layer integrally covering the upper surface of the substrate and an upper surface of the semiconductor stacked-layer body, the separation layer including a separation boundary, forming a support member on the separation layer, removing the substrate, forming a wavelength conversion layer on a side of the semiconductor stack body and the separation layer where the substrate is removed, the wavelength conversion layer made of a resin containing a wavelength conversion member, and removing the wavelength conversion layer located in the outer peripheral region by separating the separation layer at the separation boundary.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: November 28, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Yoshiyuki Aihara
  • Publication number: 20170301844
    Abstract: A manufacturing method of a light emitting device includes preparing a wafer that is provided by arranging a plurality of semiconductor light emitting elements including semiconductor stacks and electrodes provided on first surfaces of the semiconductor stacks. A metal wire is wired in an arc shape between the electrodes of the plurality of semiconductor light emitting elements that are arranged in one direction on the wafer so as to connect each of the electrodes and the metal wire. A resin layer is provided on a side of the first surfaces of the semiconductor stacks in such a way that the metal wire is accommodated inside the resin layer. The wafer is cut along a boundary line to segment the plurality of semiconductor light emitting elements so as to singulate the plurality of semiconductor light emitting elements.
    Type: Application
    Filed: July 4, 2017
    Publication date: October 19, 2017
    Applicant: NICHIA CORPORATION
    Inventors: Akinori YONEDA, Yoshiyuki AIHARA, Shinji NAKAMURA
  • Publication number: 20170279018
    Abstract: A method for manufacturing a semiconductor device includes: providing a support with a semiconductor light-emitting element including a first electrode and a second electrode; providing a base including a first interconnect terminal and a second interconnect terminal; forming a first metal layer on the support to cover the first and the second electrodes; forming a second metal layer on the base to cover the first and the second interconnect terminals; arranging the first and second electrodes and the first and second interconnect terminals to respectively face each other, and providing electrical connection therebetween by atomic diffusion; and rendering electrically insulative or removing portions of the first metal layer and the second metal layer that are outside thereof defined between the first and second electrodes and the first and second interconnect terminals.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 28, 2017
    Applicant: NICHIA CORPORATION
    Inventors: Masatsugu ICHIKAWA, Yoshiki INOUE, Yoshiyuki AIHARA, Takehito SHIMATSU
  • Publication number: 20170271559
    Abstract: A side-view type light emitting device has a bottom surface thereof as a light emission surface and a first lateral surface thereof as a mounting surface for mounting on a mounting substrate, and includes a semiconductor layered structure including a first semiconductor layer, an active layer and a second semiconductor layer; a first connecting electrode exposed from the first lateral surface and electrically connected to the first semiconductor layer; a first electrode disposed between the first semiconductor layer and the first connecting electrode; a second connecting electrode exposed from the first lateral surface; a metal wire electrically connecting an upper surface of the second semiconductor layer to the second connecting electrode; and a resin layer. In a direction perpendicular to the light emission surface, the active layer does not overlap with the first connecting electrode, and the active layer does not overlap with the second connecting electrode.
    Type: Application
    Filed: June 5, 2017
    Publication date: September 21, 2017
    Applicant: NICHIA CORPORATION
    Inventors: Akinori YONEDA, Yoshiyuki AIHARA, Shinji NAKAMURA, Akiyoshi KINOUCHI, Kazuki KASHIMOTO, Kazuyuki AKAISHI
  • Patent number: 9755119
    Abstract: A method of manufacturing a light emitting device includes preparing wafer with a plurality of light emitting elements arrayed on a growth substrate, on a first side of a semiconductor stacked layer body, forming a resin layer which includes metal wires respectively connected to a p-side electrode and an n-side electrode, forming a groove by removing at least portion of the resin layer from an upper surface side in a boundary region between the light emitting elements and exposing end surfaces of metal wires which are internal conductive members on an inner side surface defining a groove, forming electrodes for external connection respectively connecting to exposed end surfaces of metal wires, and singulating the wafer into a plurality of singulated light emitting elements.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: September 5, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Shinji Nakamura, Yoshiyuki Aihara
  • Patent number: 9728694
    Abstract: A light emitting device includes a semiconductor light emitting element, a resin layer, and a metal wire. The semiconductor light emitting element includes a semiconductor stack and an electrode. The semiconductor stack has one surface. The metal wire has a first surface, a second surface opposite to the first surface, and an end surface between the first surface and the second surface. The metal wire is provided in the resin layer and electrically connected to an upper surface of the electrode via the first surface. The end surface of the metal wire is exposed from the resin layer. A lower end of the end surface closest to the first surface of the metal wire that is exposed from the resin layer is provided at an opposite side of the one surface of the semiconductor stack with respect to the upper surface of the electrode.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: August 8, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Yoshiyuki Aihara, Shinji Nakamura
  • Patent number: 9698307
    Abstract: A side-view type light emitting device having a bottom surface thereof as a light emission surface and one side surface thereof as amounting surface for mounting on amounting substrate includes a stacked semiconductor layer having a first semiconductor layer, an active layer, and a second semiconductor layer which are stacked in that order from a side of the bottom surface; a first connecting electrode exposed from the one side surface and electrically connected to the first semiconductor layer; a metal wire having one end thereof electrically connected to an upper surface of the second semiconductor layer; a second connecting electrode exposed from the one side surface and electrically connected to the other end of the metal wire; and a resin layer which covers at least a part of each of the first semiconductor layer, the second semiconductor layer, the first connecting electrode, the second connecting electrode and the metal wire and which is configured to form an upper surface and side surfaces of the ligh
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: July 4, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Yoshiyuki Aihara, Shinji Nakamura, Akiyoshi Kinouchi, Kazuki Kashimoto, Kazuyuki Akaishi
  • Publication number: 20170012174
    Abstract: A light emitting element for flip-chip mounting having a flat mounting surface which allows a decrease in the width of the streets of a wafer. In the light emitting element, the insulating member filling around the bumps and flattening the upper surface is formed with a margin of a region with a width which is equal to or larger than the width of the streets on the dividing lines, so that at the time of dividing the wafer along the dividing lines, the insulating member is not processed, which allows designing of the streets with a small width.
    Type: Application
    Filed: September 26, 2016
    Publication date: January 12, 2017
    Applicant: NICHIA CORPORATION
    Inventors: Akinori YONEDA, Shinji NAKAMURA, Akiyoshi KINOUCHI, Yoshiyuki AIHARA, Hirokazu SASA