Patents by Inventor Hisashi Kasai

Hisashi Kasai 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: 20240105594
    Abstract: An anti-fuse element includes a first electrode, an insulating layer disposed on the first electrode, and a second electrode disposed on the insulating layer. The insulating layer includes a first region and a second region, with a thickness of the first region being smaller than a thickness of the second region. An outer edge of the second electrode is located inward of an outer edge of the insulating layer in a top view.
    Type: Application
    Filed: September 27, 2023
    Publication date: March 28, 2024
    Inventor: Hisashi KASAI
  • Patent number: 10396249
    Abstract: A semiconductor light emitting element having: a semiconductor laminated body; a full surface electrode containing an Ag provided on an upper surface of the p-type semiconductor layer; a cover electrode that covers a surface of the full surface electrode, is provided to contact on the upper surface of the p-type semiconductor layer at an outer edge of the full surface electrode, and is made of an Al-based metal material; a p-side electrode that is provided on a portion of a surface of the cover electrode; a metal oxide film that covers other surfaces of the cover electrode and contains an oxide of a metal material forming the cover electrode; and an insulation film that is made of an oxide and covers a surface of the metal oxide film, is provided.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: August 27, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Hirofumi Kawaguchi, Akinori Yoneda, Hisashi Kasai, Kazuki Kashimoto, Masafumi Itasaka
  • 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
  • Publication number: 20180102460
    Abstract: A semiconductor light emitting element having: a semiconductor laminated body; a full surface electrode containing an Ag provided on an upper surface of the p-type semiconductor layer; a cover electrode that covers a surface of the full surface electrode, is provided to contact on the upper surface of the p-type semiconductor layer at an outer edge of the full surface electrode, and is made of an Al-based metal material; a p-side electrode that is provided on a portion of a surface of the cover electrode; a metal oxide film that covers other surfaces of the cover electrode and contains an oxide of a metal material forming the cover electrode; and an insulation film that is made of an oxide and covers a surface of the metal oxide film, is provided.
    Type: Application
    Filed: December 13, 2017
    Publication date: April 12, 2018
    Inventors: Hirofumi KAWAGUCHI, Akinori YONEDA, Hisashi KASAI, Kazuki KASHIMOTO, Masafumi ITASAKA
  • Patent number: 9876147
    Abstract: A semiconductor light emitting element having: a semiconductor laminated body; a full surface electrode containing an Ag provided on an upper surface of the p-type semiconductor layer; a cover electrode that covers a surface of the full surface electrode, is provided to contact on the upper surface of the p-type semiconductor layer at an outer edge of the full surface electrode, and is made of an Al-based metal material; a p-side electrode that is provided on a portion of a surface of the cover electrode; a metal oxide film that covers other surfaces of the cover electrode and contains an oxide of a metal material forming the cover electrode; and an insulation film that is made of an oxide and covers a surface of the metal oxide film, is provided.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: January 23, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Hirofumi Kawaguchi, Akinori Yoneda, Hisashi Kasai, Kazuki Kashimoto, Masafumi Itasaka
  • Patent number: 9553238
    Abstract: A method of manufacturing a semiconductor light emitting element includes forming a semiconductor stacked layer body on a substrate, the semiconductor stacked layer body including a first semiconductor layer and a second semiconductor layer; removing a portion of the semiconductor stacked layer body and exposing the first semiconductor layer such that the second semiconductor layer includes an extending portion that extends in a plane direction; forming a conductor layer electrically connecting the first semiconductor layer and the extending portion of the second semiconductor layer; forming a first electrode electrically connected to the first semiconductor layer and a second electrode electrically connected to the second semiconductor layer; forming a protective film covering at least a portion of the first electrode and at least a portion of the second electrode; and after forming the protective film, removing a portion of the exposed portion of the extending portion.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: January 24, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Kazuki Kashimoto, Masafumi Itasaka, Hisashi Kasai, Naoki Azuma
  • Publication number: 20160365498
    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: Application
    Filed: August 25, 2016
    Publication date: December 15, 2016
    Applicant: NICHIA CORPORATION
    Inventors: Akinori YONEDA, Akiyoshi KINOUCHI, Hisashi KASAI, Yoshiyuki AIHARA, Hirokazu SASA, Shinji NAKAMURA
  • Patent number: 9461216
    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: June 19, 2015
    Date of Patent: October 4, 2016
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Akiyoshi Kinouchi, Hisashi Kasai, Yoshiyuki Aihara, Hirokazu Sasa, Shinji Nakamura
  • Publication number: 20160284940
    Abstract: A semiconductor light emitting element having: a semiconductor laminated body; a full surface electrode containing an Ag provided on an upper surface of the p-type semiconductor layer; a cover electrode that covers a surface of the full surface electrode, is provided to contact on the upper surface of the p-type semiconductor layer at an outer edge of the full surface electrode, and is made of an Al-based metal material; a p-side electrode that is provided on a portion of a surface of the cover electrode; a metal oxide film that covers other surfaces of the cover electrode and contains an oxide of a metal material forming the cover electrode; and an insulation film that is made of an oxide and covers a surface of the metal oxide film, is provided.
    Type: Application
    Filed: June 3, 2016
    Publication date: September 29, 2016
    Inventors: Hirofumi KAWAGUCHI, Akinori YONEDA, Hisashi KASAI, Kazuki KASHIMOTO, Masafumi ITASAKA
  • Patent number: 9385279
    Abstract: A light-emitting device includes a semiconductor light-emitting element, a first resin layer, a first metallic layer, a second resin layer, and a second metallic layer. The semiconductor light-emitting element includes a semiconductor stacked body and an electrode provided on one side of the semiconductor stacked body. The second resin layer is provided on the first resin layer and has a lower surface in contact with the first resin layer and an upper surface opposite to the lower surface. The second metallic layer is provided in the second resin layer and has a metallic lower surface and a metallic upper surface opposite to the metallic lower surface. The metallic upper surface is exposed from the second resin layer. The metallic upper surface of the second metallic layer is at least partially lower in height from the semiconductor stacked body than the upper surface of the second resin layer.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: July 5, 2016
    Assignee: NICHIA CORPORATION
    Inventors: Takayuki Sogo, Takanobu Sogai, Hisashi Kasai
  • Patent number: 9385280
    Abstract: A semiconductor light emitting element having: a semiconductor laminated body; a full surface electrode containing an Ag provided on an upper surface of the p-type semiconductor layer; a cover electrode that covers a surface of the full surface electrode, is provided to contact on the upper surface of the p-type semiconductor layer at an outer edge of the full surface electrode, and is made of an Al-based metal material; a p-side electrode that is provided on a portion of a surface of the cover electrode; a metal oxide film that covers other surfaces of the cover electrode and contains an oxide of a metal material forming the cover electrode; and an insulation film that is made of an oxide and covers a surface of the metal oxide film, is provided.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: July 5, 2016
    Assignee: NICHIA CORPORATION
    Inventors: Hirofumi Kawaguchi, Akinori Yoneda, Hisashi Kasai, Kazuki Kashimoto, Masafumi Itasaka
  • Publication number: 20160149085
    Abstract: A method of manufacturing a semiconductor light emitting element includes forming a semiconductor stacked layer body on a substrate, the semiconductor stacked layer body including a first semiconductor layer and a second semiconductor layer; removing a portion of the semiconductor stacked layer body and exposing the first semiconductor layer such that the second semiconductor layer includes an extending portion that extends in a plane direction; forming a conductor layer electrically connecting the first semiconductor layer and the extending portion of the second semiconductor layer; forming a first electrode electrically connected to the first semiconductor layer and a second electrode electrically connected to the second semiconductor layer; forming a protective film covering at least a portion of the first electrode and at least a portion of the second electrode; and after forming the protective film, removing a portion of the exposed portion of the extending portion.
    Type: Application
    Filed: November 20, 2015
    Publication date: May 26, 2016
    Applicant: NICHIA CORPORATION
    Inventors: Kazuki KASHIMOTO, Masafumi ITASAKA, Hisashi KASAI, Naoki AZUMA
  • Patent number: 9343617
    Abstract: A method of producing light emitting elements includes providing a wafer that includes a growth substrate and a semiconductor structure formed on the growth substrate, a lower side of the wafer being a growth substrate side, and an upper side of the wafer being a semiconductor structure side as an upper side; forming a separation groove in the wafer from the upper side of the wafer to demarcate portions of the semiconductor structure, the separation groove extending in a depth direction to a location in the wafer; forming a p-electrode and an n-electrode on an upper side of each of the demarcated portions of the semiconductor structure; forming a dielectric multilayer film at an upper side of the wafer, including portions defining the separation groove, by using an atomic layer deposition method; and separating the wafer into a plurality of light emitting elements by removing a portion of the wafer from a lower side of the wafer to at least the location to which the separation groove extends.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: May 17, 2016
    Assignee: NICHIA CORPORATION
    Inventors: Hidetsugu Sumitomo, Hisashi Kasai
  • Publication number: 20150364643
    Abstract: A method of producing light emitting elements includes providing a wafer that includes a growth substrate and a semiconductor structure formed on the growth substrate, a lower side of the wafer being a growth substrate side, and an upper side of the wafer being a semiconductor structure side as an upper side; forming a separation groove in the wafer from the upper side of the wafer to demarcate portions of the semiconductor structure, the separation groove extending in a depth direction to a location in the wafer; forming a p-electrode and an n-electrode on an upper side of each of the demarcated portions of the semiconductor structure; forming a dielectric multilayer film at an upper side of the wafer, including portions defining the separation groove, by using an atomic layer deposition method; and separating the wafer into a plurality of light emitting elements by removing a portion of the wafer from a lower side of the wafer to at least the location to which the separation groove extends.
    Type: Application
    Filed: June 11, 2015
    Publication date: December 17, 2015
    Applicant: NICHIA CORPORATION
    Inventors: Hidetsugu SUMITOMO, Hisashi KASAI
  • Publication number: 20150349207
    Abstract: A light-emitting device includes a semiconductor light-emitting element, a first resin layer, a first metallic layer, a second resin layer, and a second metallic layer. The semiconductor light-emitting element includes a semiconductor stacked body and an electrode provided on one side of the semiconductor stacked body. The second resin layer is provided on the first resin layer and has a lower surface in contact with the first resin layer and an upper surface opposite to the lower surface. The second metallic layer is provided in the second resin layer and has a metallic lower surface and a metallic upper surface opposite to the metallic lower surface. The metallic upper surface is exposed from the second resin layer. The metallic upper surface of the second metallic layer is at least partially lower in height from the semiconductor stacked body than the upper surface of the second resin layer.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 3, 2015
    Applicant: NICHIA CORPORATION
    Inventors: Takayuki SOGO, Takanobu SOGAI, Hisashi KASAI
  • Publication number: 20150311410
    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: Application
    Filed: June 19, 2015
    Publication date: October 29, 2015
    Applicant: NICHIA CORPORATION
    Inventors: Akinori YONEDA, Akiyoshi KINOUCHI, Hisashi KASAI, Yoshiyuki AIHARA, Hirokazu SASA, Shinji NAKAMURA
  • Patent number: 9093612
    Abstract: A provided light 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: April 24, 2014
    Date of Patent: July 28, 2015
    Assignee: NICHIA CORPORATION
    Inventors: Akinori Yoneda, Akiyoshi Kinouchi, Hisashi Kasai, Yoshiyuki Aihara, Hirokazu Sasa, Shinji Nakamura
  • Publication number: 20140339587
    Abstract: A semiconductor light emitting element having: a semiconductor laminated body; a full surface electrode containing an Ag provided on an upper surface of the p-type semiconductor layer; a cover electrode that covers a surface of the full surface electrode, is provided to contact on the upper surface of the p-type semiconductor layer at an outer edge of the full surface electrode, and is made of an Al-based metal material; a p-side electrode that is provided on a portion of a surface of the cover electrode; a metal oxide film that covers other surfaces of the cover electrode and contains an oxide of a metal material forming the cover electrode; and an insulation film that is made of an oxide and covers a surface of the metal oxide film, is provided.
    Type: Application
    Filed: May 16, 2014
    Publication date: November 20, 2014
    Applicant: NICHIA CORPORATION
    Inventors: Hirofumi KAWAGUCHI, Akinori YONEDA, Hisashi KASAI, Kazuki KASHIMOTO, Masafumi ITASAKA
  • Patent number: 8823031
    Abstract: A semiconductor light emitting device includes a semiconductor structure, a transparent electrically-conducting layer, a dielectric film, and a metal reflecting layer. The semiconductor structure includes an active region. The transparent electrically-conducting layer is formed on the upper surface of the semiconductor structure. The dielectric film is formed on the upper surface of the transparent electrically-conducting layer. The metal reflecting layer is formed on the upper surface of the dielectric film. The dielectric film has at least one opening whereby partially exposing the transparent electrically-conducting layer. The transparent electrically-conducting layer is electrically connected to the metal reflecting layer through the opening. A barrier layer is partially formed and covers the opening so that the barrier layer is interposed between the transparent electrically-conducting layer and the metal reflecting layer.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: September 2, 2014
    Assignee: Nichia Corporation
    Inventors: Takeshi Kususe, Naoki Azuma, Toshiaki Ogawa, Hisashi Kasai
  • Patent number: D736297
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: August 11, 2015
    Assignee: Shikino High-Tech Co., LTD.
    Inventors: Kazuaki Kawasaki, Hisashi Kasai