Patents by Inventor Kiyoshi KAYAMA

Kiyoshi KAYAMA 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: 20240136476
    Abstract: A light-emitting device includes a support including a wall portion; a light-emitting element placed on the support and surrounded by the wall portion in a plan view; a first light-transmissive member having a first outer surface and a second outer surface, which is located above the first outer surface and is located inside the first outer surface in the plan view, and covering the light-emitting element and the wall portion; and a light-shielding member covering the first light-transmissive member. The first outer surface and the second outer surface are exposed from the light-shielding member, and a surface roughness of the first outer surface is rougher than a surface roughness of the second outer surface.
    Type: Application
    Filed: February 25, 2022
    Publication date: April 25, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Kiyoshi KAYAMA, Takenori KUMAKURA
  • Patent number: 11417808
    Abstract: A light emitting device includes: a resin package including first and second leads, and a resin part defining a recess defined by a lateral wall and an upward-facing surface, which includes an upper surface of a portion of each of the first lead, the second lead, and the resin part; and a light emitting element on the first lead. The resin part includes a holding resin portion between the first and second leads at the upward-facing surface, and a covering resin portion that covers a portion of the upper surface of the holding resin portion and a portion of an upper surface of at least one of the first and second leads. A portion of an upper surface of the holding resin portion is exposed from the covering resin portion, and is located on the same plane as the upper surfaces of the first and second leads.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 16, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Kiyoshi Kayama, Shohei Mori, Akinobu Maeda
  • Publication number: 20210083153
    Abstract: A light emitting device includes: a resin package including first and second leads, and a resin part defining a recess defined by a lateral wall and an upward-facing surface, which includes an upper surface of a portion of each of the first lead, the second lead, and the resin part; and a light emitting element on the first lead. The resin part includes a holding resin portion between the first and second leads at the upward-facing surface, and a covering resin portion that covers a portion of the upper surface of the holding resin portion and a portion of an upper surface of at least one of the first and second leads. A portion of an upper surface of the holding resin portion is exposed from the covering resin portion, and is located on the same plane as the upper surfaces of the first and second leads.
    Type: Application
    Filed: August 24, 2020
    Publication date: March 18, 2021
    Inventors: Kiyoshi KAYAMA, Shohei MORI, Akinobu MAEDA
  • Patent number: 10847693
    Abstract: A light emitting device includes a resin package having a rectangular shape in a top view and two short-side lateral surfaces and two long-side lateral surfaces. The two short-side lateral surfaces include a first external surface and a second external surface located on an opposite side from the first external surface. The two long-side lateral surfaces include a third external surface and a fourth external lateral surface located on an opposite side from the third external lateral surface. The lead is not exposed on the third external lateral surface nor the fourth external lateral surface. The first lead is exposed at the first external lateral surface and the second external lateral surface, respectively flush with the resin member at the first external lateral surface and the second external lateral surface. The second lead is exposed at the second external lateral surface, flush with the resin part at the second external lateral surface.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: November 24, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Ryohei Yamashita, Seitaro Akagawa, Toshiyuki Hashimoto, Kazuki Koda, Kiyoshi Kayama, Yuta Horikawa, Ryosuke Wakaki
  • Patent number: 10777719
    Abstract: A base member includes a lead frame and a resin molded body in which the lead frame is embedded. The resin molded body and the lead frame define a plurality of recesses arranged in a matrix along a first direction and a second direction orthogonally crossing the first direction in a plan view. The resin molded body has a plurality of bottom surface portions each defining a part of a bottom surface of a corresponding one of the recesses, and a wall portion surrounding each of the bottom surface portions in the plan view, with an upper surface of the wall portion defining at least one a groove portion extending in the first direction or the second direction.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: September 15, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Kiyoshi Kayama
  • Publication number: 20190312188
    Abstract: A base member includes a lead frame and a resin molded body in which the lead frame is embedded. The resin molded body and the lead frame define a plurality of recesses arranged in a matrix along a first direction and a second direction orthogonally crossing the first direction in a plan view. The resin molded body has a plurality of bottom surface portions each defining a part of a bottom surface of a corresponding one of the recesses, and a wall portion surrounding each of the bottom surface portions in the plan view, with an upper surface of the wall portion defining at least one a groove portion extending in the first direction or the second direction.
    Type: Application
    Filed: April 3, 2019
    Publication date: October 10, 2019
    Inventor: Kiyoshi KAYAMA
  • Publication number: 20180375004
    Abstract: A light emitting device includes a resin package having a rectangular shape in a top view and two short-side lateral surfaces and two long-side lateral surfaces. The two short-side lateral surfaces include a first external surface and a second external surface located on an opposite side from the first external surface. The two long-side lateral surfaces include a third external surface and a fourth external lateral surface located on an opposite side from the third external lateral surface. The lead is not exposed on the third external lateral surface nor the fourth external lateral surface. The first lead is exposed at the first external lateral surface and the second external lateral surface, respectively flush with the resin member at the first external lateral surface and the second external lateral surface. The second lead is exposed at the second external lateral surface, flush with the resin part at the second external lateral surface.
    Type: Application
    Filed: June 26, 2018
    Publication date: December 27, 2018
    Applicant: NICHIA CORPORATION
    Inventors: Ryohei YAMASHITA, Seitaro AKAGAWA, Toshiyuki HASHIMOTO, Kazuki KODA, Kiyoshi KAYAMA, Yuta HORIKAWA, Ryosuke WAKAKI