Patents by Inventor Masatsugu Itahashi

Masatsugu Itahashi 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: 7920192
    Abstract: A photoelectric conversion device includes a photoelectric conversion region having a plurality of photoelectric conversion elements and a first MOS transistor configured to read a signal in response to an electric charge of each photoelectric conversion element; and a peripheral circuit region having a second MOS transistor configured to drive the first MOS transistor and/or amplify the signal read from the photoelectric conversion region, the photoelectric conversion region and the peripheral circuit region being located on the same semiconductor substrate, wherein an impurity concentration in a drain of the first MOS transistor is lower than an impurity concentration in a drain of the second MOS transistor.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: April 5, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takanori Watanabe, Tetsuya Itano, Hidekazu Takahashi, Shunsuke Takimoto, Kotaro Abukawa, Hiroaki Naruse, Shigeru Nishimura, Masatsugu Itahashi
  • Publication number: 20110003426
    Abstract: A photoelectric conversion device includes a photoelectric conversion region having a plurality of photoelectric conversion elements and a first MOS transistor configured to read a signal in response to an electric charge of each photoelectric conversion element; and a peripheral circuit region having a second MOS transistor configured to drive the first MOS transistor and/or amplify the signal read from the photoelectric conversion region, the photoelectric conversion region and the peripheral circuit region being located on the same semiconductor substrate, wherein an impurity concentration in a drain of the first MOS transistor is lower than an impurity concentration in a drain of the second MOS transistor.
    Type: Application
    Filed: September 14, 2010
    Publication date: January 6, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takanori Watanabe, Tetsuya Itano, Hidekazu Takahashi, Shunsuke Takimoto, Kotaro Abukawa, Hiroaki Naruse, Shigeru Nishimura, Masatsugu Itahashi
  • Publication number: 20100176272
    Abstract: A photoelectric conversion device includes a photoelectric conversion unit which is arranged in a semiconductor substrate, a charge holding portion which is arranged in the semiconductor substrate and temporarily holds a charge generated by the photoelectric conversion unit, a first transfer electrode which is arranged at a position above the semiconductor substrate to transfer a charge generated by the photoelectric conversion unit to the charge holding portion, a charge-voltage converter which is arranged in the semiconductor substrate and converts a charge into a voltage, and a second transfer electrode which is arranged at a position above the semiconductor substrate to transfer a charge held by the charge holding portion to the charge-voltage converter, and the first transfer electrode is arranged to cover the charge holding portion, and not to overlap the second transfer electrode when viewed from a direction perpendicular to the upper surface of the semiconductor substrate.
    Type: Application
    Filed: December 22, 2009
    Publication date: July 15, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Masatsugu Itahashi
  • Publication number: 20100055825
    Abstract: A method for manufacturing a semiconductor device that includes a semiconductor substrate, the method comprises: a first irradiation step of irradiating a first irradiated region with a focused ion beam so as to selectively remove a first portion corresponding to the first irradiated region of the wiring pattern, the first irradiated region being positioned on an inner side of a short defect portion of the wiring pattern in a direction along a plane parallel to the principal surface; and a second irradiation step of, after the first irradiation step, irradiating a second irradiated region with a focused ion beam so as to remove a second portion corresponding to the second irradiated region of the wiring pattern, the second irradiated region including a region that is positioned on an outer side of the short defect portion in the direction along the plane parallel to the principal surface.
    Type: Application
    Filed: August 7, 2009
    Publication date: March 4, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kouhei Hashimoto, Masatsugu Itahashi
  • Publication number: 20090136174
    Abstract: A photoelectric conversion device comprises a high-refractive-index portion at a position close to a photoelectric conversion element therein. And, the high-refractive-index portion has first and second horizontal cross-section surfaces. The first cross-section surface is at a position closer to the photoelectric conversion element rather than the second cross-section surface, and is larger than an area of the second cross-section surface, so as to guide an incident light into the photoelectric conversion element without reflection.
    Type: Application
    Filed: September 21, 2006
    Publication date: May 28, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Masatsugu Itahashi
  • Publication number: 20090130782
    Abstract: A method is provided for manufacturing a semiconductor device that includes a multilayer wiring structure in which insulating layers and wiring layers each with a plurality of conductor lines are alternately stacked on each other. The method includes steps of forming a first wiring layer on a first insulating layer, detecting a defect in the first wiring layer on the first insulating layer, and determining whether or not the defect is to be irradiated with a focused ion beam, according to a detection result. If it is determined that the defect is to be irradiated, the defect is irradiated with a focused ion beam and then a second insulating layer is formed on the first wiring layer disposed on the first insulating layer. If it is determined that the defect is not to be irradiated with a focused ion beam, the second insulating layer is formed on the first wiring layer disposed on the first insulating layer without irradiating the defect.
    Type: Application
    Filed: November 7, 2008
    Publication date: May 21, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masatsugu Itahashi, Kouhei Hashimoto, Nobuhiko Sato, Seiichi Tamura, Hiroshi Yuzurihara
  • Publication number: 20080029793
    Abstract: A photoelectric conversion device includes a photoelectric conversion region having a plurality of photoelectric conversion elements and a first MOS transistor configured to read a signal in response to an electric charge of each photoelectric conversion element; and a peripheral circuit region having a second MOS transistor configured to drive the first MOS transistor and/or amplify the signal read from the photoelectric conversion region, the photoelectric conversion region and the peripheral circuit region being located on the same semiconductor substrate, wherein an impurity concentration in a drain of the first MOS transistor is lower than an impurity concentration in a drain of the second MOS transistor.
    Type: Application
    Filed: July 6, 2007
    Publication date: February 7, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takanori Watanabe, Tetsuya Itano, Hidekazu Takahashi, Shunsuke Takimoto, Kotaro Abukawa, Hiroaki Naruse, Shigeru Nishimura, Masatsugu Itahashi