Patents by Inventor Keiji Emura

Keiji Emura 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: 20140209938
    Abstract: A semiconductor light emitting element includes: an insulating substrate having a plurality of convex portions on a surface thereof; a plurality of light emitting element components having semiconductor laminated bodies that are laminated on the insulating substrate and are separated from one another by a groove that exposes the convex portions; and a connector connecting between the light emitting element components. The light emitting element components include a first light emitting element component and a second light emitting element component. The first light emitting element component is separated from the second light emitting element component with the groove in between, and has a first protrusion that protrudes toward the second light emitting element component. The connector includes a first connector having a shape that straddles the groove and that follows the convex portions, and has a straight section.
    Type: Application
    Filed: January 29, 2014
    Publication date: July 31, 2014
    Applicant: NICHIA CORPORATION
    Inventors: Keiji EMURA, Akihiro MIYAGI, Shun KITAHAMA
  • Patent number: 8592853
    Abstract: A semiconductor light emitting element includes: a semiconductor layer; first electrodes arranged in a staggered array on an upper surface of the semiconductor layer; and a second electrode on a lower surface of the semiconductor layer. Each first electrode includes an external connection, a first elongated portion which extends from the external connection toward a central region of the upper surface of the semiconductor layer, and a second elongated portion which extends from the external connection to a near-edge region of the semiconductor layer. In addition, the first electrodes are arrayed so that a near-tip part of the first elongated portion of each first electrode is opposed to a near-tip part of the first elongated portion of each of an adjacent one or ones of the first electrodes in a direction in which the first electrodes arranged, on the central region of the semiconductor layer.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: November 26, 2013
    Assignee: Nichia Corporation
    Inventors: Hidetoshi Tanaka, Keiji Emura
  • Patent number: 8592954
    Abstract: A semiconductor element includes a semiconductor layer, an electrode, an adhesion layer, and an insulating layer. The electrode is disposed over the semiconductor layer and has a first upper surface and a second upper surface disposed further away from the semiconductor layer than the first upper surface. The adhesion layer is disposed on the first upper surface of the electrode so that the second upper surface of the electrode is disposed further away from the semiconductor layer than an upper surface of the adhesion layer. The insulating layer covers from the upper surface of the adhesion layer to the semiconductor layer.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: November 26, 2013
    Assignee: Nichia Corporation
    Inventors: Keiji Emura, Fumihiro Inoue
  • Patent number: 8546840
    Abstract: The present invention provides a semiconductor light emitting element having; a semiconductor layer where an n-type semiconductor layer, a light emitting layer and a p-type semiconductor layer are laminated; an n-side electrode connected to the n-type semiconductor layer; and a p-side electrode connected to the p-type semiconductor layer; when the semiconductor light emitting element is viewed from above, the n-side electrode has a n-side pad electrode and n-side extension, the n-side extension comprises an n-side first extension extending from the n-side pad electrode toward the p-side pad electrode and an n-side second extension extending from the n-side first extension and formed T shape with the n-side first extension, the p-side electrode has a p-side pad electrode and a p-side extension formed so as to surround the n-side electrode, the p-side side extension comprises an p-side first extension extending from the p-side pad electrode parallel to the n-side second extension.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: October 1, 2013
    Assignee: Nichia Corporation
    Inventors: Yoshiki Inoue, Keiji Emura
  • Patent number: 8466487
    Abstract: A semiconductor light emitting element has a first electrode and a second electrode provided on a semiconductor layer; the first electrode has a first external connector and a first extended portion and second extended portion that extend from the first external connector, the second electrode has a second external connector, and a third extended portion, a fourth extended portion, and a fifth extended portion that extend from the second external connector, the third extended portion extends along the first extended portion and farther outside than the first extended portion, the fourth extended portion extends along the second extended portion and farther outside than the second extended portion, and the fifth extended portion extends an area between the third extended portion and the fourth extended portion to the first external connector side, and the fifth extended portion is either on a line that links a point on the first extended portion at the position closest to the second external connector and a po
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: June 18, 2013
    Assignee: Nichia Corporation
    Inventor: Keiji Emura
  • Publication number: 20120199868
    Abstract: The present invention provides a semiconductor light emitting element having; a semiconductor layer where an n-type semiconductor layer, a light emitting layer and a p-type semiconductor layer are laminated; an n-side electrode connected to the n-type semiconductor layer; and a p-side electrode connected to the p-type semiconductor layer; when the semiconductor light emitting element is viewed from above, the n-side electrode has a n-side pad electrode and n-side extension, the n-side extension comprises an n-side first extension extending from the n-side pad electrode toward the p-side pad electrode and an n-side second extension extending from the n-side first extension and formed T shape with the n-side first extension, the p-side electrode has a p-side pad electrode and a p-side extension formed so as to surround the n-side electrode, the p-side side extension comprises an p-side first extension extending from the p-side pad electrode parallel to the n-side second extension.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 9, 2012
    Applicant: NICHIA CORPORATION
    Inventors: Yoshiki INOUE, Keiji EMURA
  • Publication number: 20120049238
    Abstract: A semiconductor light emitting element includes: a semiconductor layer; first electrodes arranged in a staggered array on an upper surface of the semiconductor layer; and a second electrode on a lower surface of the semiconductor layer. Each first electrode includes an external connection, a first elongated portion which extends from the external connection toward a central region of the upper surface of the semiconductor layer, and a second elongated portion which extends from the external connection to a near-edge region of the semiconductor layer. In addition, the first electrodes are arrayed so that a near-tip part of the first elongated portion of each first electrode is opposed to a near-tip part of the first elongated portion of each of an adjacent one or ones of the first electrodes in a direction in which the first electrodes arranged, on the central region of the semiconductor layer.
    Type: Application
    Filed: August 25, 2011
    Publication date: March 1, 2012
    Inventors: Hidetoshi TANAKA, Keiji Emura
  • Patent number: 8120057
    Abstract: The present invention provides a light emitting element capable or realizing at least one of lower resistance, higher output, higher power efficiency (1 m/W), higher mass productivity and lower cost of the element using a light transmissive electrode for an electrode arranged exterior to the light emitting structure. A semiconductor light emitting element includes a light emitting section, a first electrode and a second electrode on a semiconductor structure including first and second conductive type semiconductor layers, the first and the second electrodes respectively including at least two layers of a first layer of a light transmissive conductive film conducting to the first and the second conductive type semiconductor and a second layer arranged so as to conduct with the first layer. First and second light transmissive insulating films are respectively arranged so as to overlap at least one part of the first and the second layers.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: February 21, 2012
    Assignee: Nichia Corporation
    Inventors: Masahiko Sano, Takahiko Sakamoto, Keiji Emura, Katsuyoshi Kadan
  • Publication number: 20120018766
    Abstract: A semiconductor light emitting element has a first electrode and a second electrode provided on a semiconductor layer; the first electrode has a first external connector and a first extended portion and second extended portion that extend from the first external connector, the second electrode has a second external connector, and a third extended portion, a fourth extended portion, and a fifth extended portion that extend from the second external connector, the third extended portion extends along the first extended portion and farther outside than the first extended portion, the fourth extended portion extends along the second extended portion and farther outside than the second extended portion, and the fifth extended portion extends an area between the third extended portion and the fourth extended portion to the first external connector side, and the fifth extended portion is either on a line that links a point on the first extended portion at the position closest to the second external connector and a po
    Type: Application
    Filed: July 21, 2011
    Publication date: January 26, 2012
    Applicant: NICHIA CORPORATION
    Inventor: Keiji EMURA
  • Publication number: 20110316126
    Abstract: A semiconductor element includes a semiconductor layer, an electrode, an adhesion layer, and an insulating layer. The electrode is disposed over the semiconductor layer and has a first upper surface and a second upper surface disposed further away from the semiconductor layer than the first upper surface. The adhesion layer is disposed on the first upper surface of the electrode so that the second upper surface of the electrode is disposed further away from the semiconductor layer than an upper surface of the adhesion layer. The insulating layer covers from the upper surface of the adhesion layer to the semiconductor layer.
    Type: Application
    Filed: June 28, 2011
    Publication date: December 29, 2011
    Applicant: NICHIA CORPORATION
    Inventors: Keiji EMURA, Fumihiro INOUE
  • Publication number: 20110233596
    Abstract: The present invention provides a light emitting element capable or realizing at least one of lower resistance, higher output, higher power efficiency (1 m/W), higher mass productivity and lower cost of the element using a light transmissive electrode for an electrode arranged exterior to the light emitting structure. A semiconductor light emitting element includes a light emitting section, a first electrode and a second electrode on a semiconductor structure including first and second conductive type semiconductor layers, the first and the second electrodes respectively including at least two layers of a first layer of a light transmissive conductive film conducting to the first and the second conductive type semiconductor and a second layer arranged so as to conduct with the first layer. First and second light transmissive insulating films are respectively arranged so as to overlap at least one part of the first and the second layers.
    Type: Application
    Filed: June 7, 2011
    Publication date: September 29, 2011
    Inventors: Masahiko SANO, Takahiko Sakamoto, Keiji Emura, Katsuyoshi Kadan
  • Patent number: 7982236
    Abstract: The present invention provides a light emitting element capable or realizing at least one of lower resistance, higher output, higher power efficiency (1m/W), higher mass productivity and lower cost of the element using a light transmissive electrode for an electrode arranged exterior to the light emitting structure. A semiconductor light emitting element includes a light emitting section, a first electrode and a second electrode on a semiconductor structure including first and second conductive type semiconductor layers, the first and the second electrodes respectively including at least two layers of a first layer of a light transmissive conductive film conducting to the first and the second conductive type semiconductor and a second layer arranged so as to conduct with the first layer. First and second light transmissive insulating films are respectively arranged so as to overlap at least one part of the first and the second layers.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: July 19, 2011
    Assignee: Nichia Corporation
    Inventors: Masahiko Sano, Takahiko Sakamoto, Keiji Emura, Katsuyoshi Kadan
  • Publication number: 20080185606
    Abstract: The present invention provides a light emitting element capable or realizing at least one of, preferably, most of lower resistance, higher output, higher power efficiency (1 m/W), higher mass productivity and lower cost of the element using a light transmissive electrode for an electrode arranged exterior to the light emitting structure.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 7, 2008
    Applicant: NICHIA CORPORATION
    Inventors: Masahiko Sano, Takahiko Sakamoto, Keiji Emura, Katsuyoshi Kadan
  • Patent number: D674356
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: January 15, 2013
    Assignee: Nichia Corporation
    Inventors: Yoshiki Inoue, Keiji Emura