Patents by Inventor Yoshiei Tanaka

Yoshiei Tanaka 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: 20220231175
    Abstract: A photoelectric conversion apparatus comprises a semiconductor layer including a plurality of photoelectric conversion portions and having a first surface and a second surface that is the surface opposite to the first surface, a wiring structure disposed on the second surface side of the semiconductor layer, and a metal compound film disposed on the first surface side of the semiconductor layer. The metal compound film contains hydrogen and carbon. The concentration of the hydrogen in the interface on the semiconductor layer side of the metal compound film is 1×1021 atoms/cm3 or more and 1×1022 atoms/cm3 or less. The concentration of the carbon in the interface on the semiconductor layer side of the metal compound film is 5×1020 atoms/cm3 or more and 1×1022 atoms/cm3 or less.
    Type: Application
    Filed: January 13, 2022
    Publication date: July 21, 2022
    Inventors: Yoshiei Tanaka, Takumi Ogino, Tsutomu Tange
  • Patent number: 10991741
    Abstract: A silicon compound film that is any one of a silicon oxide film, a silicon nitride film, and a silicon carbide film, and a metal compound film lying between the silicon compound film and a semiconductor layer are arranged above a main face. The silicon compound film and the metal compound film extend into a first trench, and the metal compound film extends into a second trench. When a distance from the bottom of the second trench to the silicon compound film is expressed as “Hb”, and a distance from the main face to the silicon compound film is expressed as “Hd”, the respective distances satisfy the condition “Hd<Hb”.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: April 27, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiei Tanaka, Katsunori Hirota, Yusuke Onuki, Tsutomu Tange, Takumi Ogino
  • Patent number: 10916574
    Abstract: An imaging device includes a substrate including a photoelectric conversion portion and an insulating layer formed to cover at least a part of the photoelectric conversion portion. The insulating layer contains silicon, nitrogen, and chlorine. In an embodiment, in at least a part of the insulating layer, a ratio of silicon atoms bonded to one, two, or three nitrogen atoms and not bonded to an oxygen atom is not more than 20% in silicon atoms contained in at least the part.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: February 9, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takahiro Suzuki, Yoshiei Tanaka, Tsutomu Tange, Katsunori Hirota
  • Patent number: 10777596
    Abstract: An imaging apparatus includes a substrate including a photoelectric conversion portion; and a silicon nitride layer arranged to cover at least a portion of the photoelectric conversion portion. The silicon nitride layer contains chlorine. An N/Si composition ratio in the silicon nitride layer is not less than 1.00 and is less than 1.33.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: September 15, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Katsunori Hirota, Keiichi Sasaki, Tsutomu Tange, Yoshiei Tanaka, Akira Ohtani
  • Publication number: 20200083263
    Abstract: A silicon compound film that is any one of a silicon oxide film, a silicon nitride film, and a silicon carbide film, and a metal compound film lying between the silicon compound film and a semiconductor layer are arranged above a main face. The silicon compound film and the metal compound film extend into a first trench, and the metal compound film extends into a second trench. When a distance from the bottom of the second trench to the silicon compound film is expressed as “Hb”, and a distance from the main face to the silicon compound film is expressed as “Hd”, the respective distances satisfy the condition “Hd<Hb”.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 12, 2020
    Inventors: Yoshiei Tanaka, Katsunori Hirota, Yusuke Onuki, Tsutomu Tange, Takumi Ogino
  • Publication number: 20190280023
    Abstract: An imaging device includes a substrate including a photoelectric conversion portion and an insulating layer formed to cover at least a part of the photoelectric conversion portion. The insulating layer contains silicon, nitrogen, and chlorine. In an embodiment, in at least a part of the insulating layer, a ratio of silicon atoms bonded to one, two, or three nitrogen atoms and not bonded to an oxygen atom is not more than 20% in silicon atoms contained in at least the part.
    Type: Application
    Filed: February 14, 2019
    Publication date: September 12, 2019
    Inventors: Takahiro Suzuki, Yoshiei Tanaka, Tsutomu Tange, Katsunori Hirota
  • Publication number: 20190096946
    Abstract: An imaging apparatus includes a substrate including a photoelectric conversion portion; and a silicon nitride layer arranged to cover at least a portion of the photoelectric conversion portion. The silicon nitride layer contains chlorine. An N/Si composition ratio in the silicon nitride layer is not less than 1.00 and is less than 1.33.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 28, 2019
    Inventors: Katsunori Hirota, Keiichi Sasaki, Tsutomu Tange, Yoshiei Tanaka, Akira Ohtani