Patents by Inventor Kai Yoshitsugu

Kai Yoshitsugu 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).

  • Patent number: 9653502
    Abstract: There is provided a solid-state imaging device including a semiconductor substrate having an effective region in which a photodiode performing a photoelectric conversion is formed and, an optical black region shielded by a light shielding film; a first film which is formed on the effective region and in which at least one layer or more of layers having a negative fixed charge are laminated; and a second film which is formed on the light shielding region and in which at least one layer or more of layers having a negative fixed charge are laminated, in which the number of layers formed in the first film is different from the number of layers formed in the second film.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: May 16, 2017
    Assignee: Sony Corporation
    Inventor: Kai Yoshitsugu
  • Publication number: 20140218574
    Abstract: There is provided a solid-state imaging device including a semiconductor substrate having an effective region in which a photodiode performing a photoelectric conversion is formed and, an optical black region shielded by a light shielding film; a first film which is formed on the effective region and in which at least one layer or more of layers having a negative fixed charge are laminated; and a second film which is formed on the light shielding region and in which at least one layer or more of layers having a negative fixed charge are laminated, in which the number of layers formed in the first film is different from the number of layers formed in the second film.
    Type: Application
    Filed: April 7, 2014
    Publication date: August 7, 2014
    Applicant: Sony Corporation
    Inventor: Kai Yoshitsugu
  • Patent number: 8729450
    Abstract: There is provided a solid-state imaging device including a semiconductor substrate having an effective region in which a photodiode performing a photoelectric conversion is formed and, an optical black region shielded by a light shielding film; a first film which is formed on the effective region and in which at least one layer or more of layers having a negative fixed charge are laminated; and a second film which is formed on the light shielding region and in which at least one layer or more of layers having a negative fixed charge are laminated, in which the number of layers formed in the first film is different from the number of layers formed in the second film.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: May 20, 2014
    Assignee: Sony Corporation
    Inventor: Kai Yoshitsugu
  • Publication number: 20120228473
    Abstract: There is provided a solid-state imaging device including a semiconductor substrate having an effective region in which a photodiode performing a photoelectric conversion is formed and, an optical black region shielded by a light shielding film; a first film which is formed on the effective region and in which at least one layer or more of layers having a negative fixed charge are laminated; and a second film which is formed on the light shielding region and in which at least one layer or more of layers having a negative fixed charge are laminated, in which the number of layers formed in the first film is different from the number of layers formed in the second film.
    Type: Application
    Filed: February 22, 2012
    Publication date: September 13, 2012
    Applicant: SONY CORPORATION
    Inventor: Kai Yoshitsugu
  • Patent number: 8097486
    Abstract: There is provided a solid-state imaging element having a light receiving part generating charges by light irradiation, and a source/drain region of a transistor, both formed in a semiconductor layer. The solid-state imaging element includes a non-silicided region including the light receiving part, in which surfaces of the source/drain region and a gate electrode of the transistor are not silicided; and a silicided region in which the surfaces of the source/drain region and the gate electrode of the transistor are silicided. The non-silicided region has a sidewall formed on a side surface of the gate electrode of the transistor, a hydrogen supply film formed to cover the semiconductor layer, the gate electrode, and the sidewall, and a salicide block film formed on the hydrogen supply film to prevent silicidation. The silicided region has a sidewall formed on the side surface of the gate electrode of the transistor.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: January 17, 2012
    Assignee: Sony Corporation
    Inventors: Hideo Kido, Kazuichiro Itonaga, Kai Yoshitsugu, Kenichi Chiba
  • Patent number: 8093635
    Abstract: There is provided a solid-state imaging element having a light receiving part generating charges by light irradiation, and a source/drain region of a transistor, both formed in a semiconductor layer. The solid-state imaging element includes a non-silicided region including the light receiving part, in which surfaces of the source/drain region and a gate electrode of the transistor are not silicided; and a silicided region in which the surfaces of the source/drain region and the gate electrode of the transistor are silicided. The non-silicided region has a sidewall formed on a side surface of the gate electrode of the transistor, a hydrogen supply film formed to cover the semiconductor layer, the gate electrode, and the sidewall, and a salicide block film formed on the hydrogen supply film to prevent silicidation. The silicided region has a sidewall formed on the side surface of the gate electrode of the transistor.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: January 10, 2012
    Assignee: Sony Corporation
    Inventors: Hideo Kido, Kazuichiro Itonaga, Kai Yoshitsugu, Kenichi Chiba
  • Publication number: 20100167450
    Abstract: There is provided a solid-state imaging element having a light receiving part generating charges by light irradiation, and a source/drain region of a transistor, both formed in a semiconductor layer. The solid-state imaging element includes a non-silicided region including the light receiving part, in which surfaces of the source/drain region and a gate electrode of the transistor are not silicided; and a silicided region in which the surfaces of the source/drain region and the gate electrode of the transistor are silicided. The non-silicided region has a sidewall formed on a side surface of the gate electrode of the transistor, a hydrogen supply film formed to cover the semiconductor layer, the gate electrode, and the sidewall, and a salicide block film formed on the hydrogen supply film to prevent silicidation. The silicided region has a sidewall formed on the side surface of the gate electrode of the transistor.
    Type: Application
    Filed: February 19, 2010
    Publication date: July 1, 2010
    Applicant: Sony Corporation
    Inventors: Hideo Kido, Kazuichiro Itonaga, Kai Yoshitsugu, Kenichi Chiba
  • Patent number: 7648917
    Abstract: A manufacturing method of a solid-state imaging device includes: forming a first and second insulating films having different properties on a silicon substrate such that they cover sides of gate electrodes formed on the silicon substrate; subjecting the second insulating film to selective etching, and forming sidewalls on the sides of the gate electrode; subjecting the gate electrode having the sidewalls formed to ion implantation; covering the gate electrode having the sidewalls formed and forming a third insulating film on the silicon substrate; covering with a mask material part of the gate electrodes covered with the third insulating film, and subjecting the substrate to etching to remove exposed third insulating film; and, after removing the mask material, forming a metal film capable of forming a silicide on the silicon substrate such that the metal film covers the gate electrodes and the third insulating film to form a silicide layer.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: January 19, 2010
    Assignee: Sony Corporation
    Inventors: Kai Yoshitsugu, Kenichi Chiba
  • Publication number: 20080237666
    Abstract: There is provided a solid-state imaging element having a light receiving part generating charges by light irradiation, and a source/drain region of a transistor, both formed in a semiconductor layer. The solid-state imaging element includes a non-silicided region including the light receiving part, in which surfaces of the source/drain region and a gate electrode of the transistor are not silicided; and a silicided region in which the surfaces of the source/drain region and the gate electrode of the transistor are silicided. The non-silicided region has a sidewall formed on a side surface of the gate electrode of the transistor, a hydrogen supply film formed to cover the semiconductor layer, the gate electrode, and the sidewall, and a salicide block film formed on the hydrogen supply film to prevent silicidation. The silicided region has a sidewall formed on the side surface of the gate electrode of the transistor.
    Type: Application
    Filed: March 24, 2008
    Publication date: October 2, 2008
    Applicant: Sony Corporation
    Inventors: Hideo Kido, Kazuichiro Itonaga, Kai Yoshitsugu, Kenichi Chiba
  • Publication number: 20080081394
    Abstract: A manufacturing method of a solid-state imaging device includes: forming a first and second insulating films having different properties on a silicon substrate such that they cover sides of gate electrodes formed on the silicon substrate; subjecting the second insulating film to selective etching, and forming sidewalls on the sides of the gate electrode; subjecting the gate electrode having the sidewalls formed to ion implantation; covering the gate electrode having the sidewalls formed and forming a third insulating film on the silicon substrate; covering with a mask material part of the gate electrodes covered with the third insulating film, and subjecting the substrate to etching to remove exposed third insulating film; and, after removing the mask material, forming a metal film capable of forming a silicide on the silicon substrate such that the metal film covers the gate electrodes and the third insulating film to form a silicide layer.
    Type: Application
    Filed: September 19, 2007
    Publication date: April 3, 2008
    Applicant: SONY CORPORATION
    Inventors: Kai Yoshitsugu, Kenichi Chiba