Patents by Inventor Ginjiro Toyoguchi

Ginjiro Toyoguchi 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: 20230053980
    Abstract: A pixel circuit of a photoelectric conversion device includes two photoelectric conversion elements, each including two impurity region in each of two different layers. In at least one pixel of the pixel circuits, a first separation region separating the two impurity regions in a first layer and a second separation region separating the two impurity regions in a second layer extend in directions different from each other in a planer view. An impurity region in a photoelectric conversion element includes a first portion overlapping the first separation region in the planar view, a second portion adjacent to a first transfer gate, and a third portion located on an opposite side of the second portion with respect to the first portion. The impurity region has a potential distribution monotonically decreasing from the third portion to the second portion for signal charges.
    Type: Application
    Filed: August 12, 2022
    Publication date: February 23, 2023
    Inventors: Daiki Shirahige, Hiroshi Sekine, Shunichi Wakashima, Ginjiro Toyoguchi
  • Patent number: 11348961
    Abstract: A photoelectric conversion apparatus in one aspect of the present disclosure includes a first semiconductor region of a first conductivity type, a second semiconductor region of the first conductivity type, a third semiconductor region of the first conductivity type, a fourth semiconductor region of a second conductivity type in which a distance from a first surface being greater than a distance from the substrate to the third semiconductor region, a first isolation portion disposed between the first semiconductor region and the second semiconductor region, a microlens commonly disposed in the first semiconductor region and the second semiconductor region, and a fifth semiconductor region of the second conductivity type disposed between the first isolation portion and the fourth semiconductor region. The third semiconductor region is disposed between the fourth semiconductor region and the fifth semiconductor region.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: May 31, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Daichi Seto, Ginjiro Toyoguchi
  • Patent number: 10868069
    Abstract: Provided is a solid state imaging device including a pixel in which the pixel has a photoelectric conversion unit provided in a semiconductor substrate and a light guide having a bottom that emits an incident light to the photoelectric conversion unit. The photoelectric conversion unit includes a first semiconductor region of a first conductivity type provided at a first depth of the semiconductor substrate, and second and third semiconductor regions of a second conductivity type provided at a second depth located under the first depth of the semiconductor substrate and spaced apart from each other by a first region. Each of the second semiconductor region, the third semiconductor region, and the first region overlaps with a part of the first semiconductor region in a planar view. At least a part of the bottom and at least a part of the first region overlap with each other in the planar view.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: December 15, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Ginjiro Toyoguchi
  • Patent number: 10818708
    Abstract: A photoelectric conversion unit includes first, second, and third semiconductor regions having first, second, and first conductivity types, respectively. A fourth semiconductor region between the first and third semiconductor regions at the same depth as the second semiconductor region. A charge holding portion includes a fifth semiconductor region of the first conductivity type. A transfer transistor has a region between the first and fifth semiconductor regions as a channel portion. A pixel isolation portion includes a sixth semiconductor region of the second conductivity type between the third semiconductor regions of adjacent pixels. A relationship V6>V5>V4 is satisfied, where a potential of the fourth semiconductor region to charges is V4, a potential of a region having the highest potential to charges in the channel portion with the transfer transistor being in an off-state is V5, and a potential of the sixth semiconductor region to charges is V6.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: October 27, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Ginjiro Toyoguchi
  • Patent number: 10818715
    Abstract: According to one aspect of the invention, provided is a solid state imaging device having a pixel including a photoelectric conversion portion provided in a semiconductor substrate. The photoelectric conversion portion includes first and second charge accumulation region of a first conductivity type provided at a first depth of the semiconductor substrate and spaced apart from each other by a first gap, and first and second semiconductor region of a second conductivity type provided at a second depth located under the first depth of the semiconductor substrate and extend over the first charge accumulation region, the first gap, and the second charge accumulation region in a planar view. At the second depth, an impurity concentration of the second conductivity type in a region under the first gap is higher than an impurity concentration of the second conductivity type in a region under the first and second charge accumulation regions.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: October 27, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Junji Iwata, Yoichi Wada, Yoichiro Handa, Daichi Seto, Hideyuki Ito, Ginjiro Toyoguchi, Hajime Ikeda, Masahiro Kobayashi
  • Publication number: 20200312893
    Abstract: A photoelectric conversion apparatus in one aspect of the present disclosure includes a first semiconductor region of a first conductivity type, a second semiconductor region of the first conductivity type, a third semiconductor region of the first conductivity type, a fourth semiconductor region of a second conductivity type in which a distance from a first surface being greater than a distance from the substrate to the third semiconductor region, a first isolation portion disposed between the first semiconductor region and the second semiconductor region, a microlens commonly disposed in the first semiconductor region and the second semiconductor region, and a fifth semiconductor region of the second conductivity type disposed between the first isolation portion and the fourth semiconductor region. The third semiconductor region is disposed between the fourth semiconductor region and the fifth semiconductor region.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Inventors: Daichi Seto, Ginjiro Toyoguchi
  • Patent number: 10559610
    Abstract: A method of manufacturing an imaging device, including a first buried diode including a first semiconductor region and a second semiconductor region and a second buried diode including a third semiconductor region and a fourth semiconductor region, includes implanting first impurity ions of a first conductivity type into a first region and a third region between the first region and a second region, and implanting second impurity ions of the first conductivity type into the second region and the third region, wherein the first semiconductor region is formed by implanting the first impurity ions, the third semiconductor region is formed by implanting the second impurity ions, and a fifth semiconductor region having a higher impurity concentration than the first and the second semiconductor regions is formed in the third region by implanting the first and second impurity ions.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: February 11, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoichiro Handa, Ginjiro Toyoguchi, Junji Iwata, Yoichi Wada, Hideyuki Ito, Hiromasa Tsuboi, Daichi Seto
  • Publication number: 20200035722
    Abstract: A photoelectric conversion unit includes first, second, and third semiconductor regions having first, second, and first conductivity types, respectively. A fourth semiconductor region between the first and third semiconductor regions at the same depth as the second semiconductor region. A charge holding portion includes a fifth semiconductor region of the first conductivity type. A transfer transistor has a region between the first and fifth semiconductor regions as a channel portion. A pixel isolation portion includes a sixth semiconductor region of the second conductivity type between the third semiconductor regions of adjacent pixels. A relationship V6>V5>V4 is satisfied, where a potential of the fourth semiconductor region to charges is V4, a potential of a region having the highest potential to charges in the channel portion with the transfer transistor being in an off-state is V5, and a potential of the sixth semiconductor region to charges is V6.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 30, 2020
    Inventor: Ginjiro Toyoguchi
  • Patent number: 10504954
    Abstract: An imaging device includes a wiring connected to an output node of an amplification transistor, and the wiring is provided at a position between an output line electrically connected to the output node of the amplification transistor and a gate of the amplification transistor.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: December 10, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ginjiro Toyoguchi, Fumihiro Inui, Hideyuki Ito
  • Patent number: 10381388
    Abstract: A solid-state imaging device includes a plurality of pixels each including a photoelectric converter that generates charges by photoelectric conversion and a charge holding portion that holds charges transferred from the photoelectric converter. The photoelectric converter includes a first semiconductor region of a first conductivity type provided in a surface portion of a semiconductor substrate, a second semiconductor region of a second conductivity type provided under the first semiconductor region and configured to accumulate generated charges, a third semiconductor region of the first conductivity type provided under the second semiconductor region, and a fourth semiconductor region of the first conductivity type provided in a part of a portion between the first and second semiconductor regions. In a plan view, the second semiconductor region has a first region not overlapping with the third semiconductor region, and the fourth semiconductor region overlaps with at least a part of the first region.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: August 13, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Ginjiro Toyoguchi
  • Publication number: 20190051685
    Abstract: A method of manufacturing an imaging device, including a first buried diode including a first semiconductor region and a second semiconductor region and a second buried diode including a third semiconductor region and a fourth semiconductor region, includes implanting first impurity ions of a first conductivity type into a first region and a third region between the first region and a second region, and implanting second impurity ions of the first conductivity type into the second region and the third region, wherein the first semiconductor region is formed by implanting the first impurity ions, the third semiconductor region is formed by implanting the second impurity ions, and a fifth semiconductor region having a higher impurity concentration than the first and the second semiconductor regions is formed in the third region by implanting the first and second impurity ions.
    Type: Application
    Filed: August 2, 2018
    Publication date: February 14, 2019
    Inventors: Yoichiro Handa, Ginjiro Toyoguchi, Junji Iwata, Yoichi Wada, Hideyuki Ito, Hiromasa Tsuboi, Daichi Seto
  • Publication number: 20180374886
    Abstract: According to one aspect of the invention, provided is a solid state imaging device having a pixel including a photoelectric conversion portion provided in a semiconductor substrate. The photoelectric conversion portion includes first and second charge accumulation region of a first conductivity type provided at a first depth of the semiconductor substrate and spaced apart from each other by a first gap, and first and second semiconductor region of a second conductivity type provided at a second depth located under the first depth of the semiconductor substrate and extend over the first charge accumulation region, the first gap, and the second charge accumulation region in a planar view. At the second depth, an impurity concentration of the second conductivity type in a region under the first gap is higher than an impurity concentration of the second conductivity type in a region under the first and second charge accumulation regions.
    Type: Application
    Filed: June 20, 2018
    Publication date: December 27, 2018
    Inventors: Junji Iwata, Yoichi Wada, Yoichiro Handa, Daichi Seto, Hideyuki Ito, Ginjiro Toyoguchi, Hajime Ikeda, Masahiro Kobayashi
  • Publication number: 20180350864
    Abstract: Provided is a solid state imaging device including a pixel in which the pixel has a photoelectric conversion unit provided in a semiconductor substrate and a light guide having a bottom that emits an incident light to the photoelectric conversion unit. The photoelectric conversion unit includes a first semiconductor region of a first conductivity type provided at a first depth of the semiconductor substrate, and second and third semiconductor regions of a second conductivity type provided at a second depth located under the first depth of the semiconductor substrate and spaced apart from each other by a first region. Each of the second semiconductor region, the third semiconductor region, and the first region overlaps with a part of the first semiconductor region in a planar view. At least a part of the bottom and at least a part of the first region overlap with each other in the planar view.
    Type: Application
    Filed: May 25, 2018
    Publication date: December 6, 2018
    Inventor: Ginjiro Toyoguchi
  • Publication number: 20180342553
    Abstract: An imaging device includes a wiring connected to an output node of an amplification transistor, and the wiring is provided at a position between an output line electrically connected to the output node of the amplification transistor and a gate of the amplification transistor.
    Type: Application
    Filed: May 17, 2018
    Publication date: November 29, 2018
    Inventors: Ginjiro Toyoguchi, Fumihiro Inui, Hideyuki Ito
  • Publication number: 20180219033
    Abstract: A solid-state imaging device includes a plurality of pixels each including a photoelectric converter that generates charges by photoelectric conversion and a charge holding portion that holds charges transferred from the photoelectric converter. The photoelectric converter includes a first semiconductor region of a first conductivity type provided in a surface portion of a semiconductor substrate, a second semiconductor region of a second conductivity type provided under the first semiconductor region and configured to accumulate generated charges, a third semiconductor region of the first conductivity type provided under the second semiconductor region, and a fourth semiconductor region of the first conductivity type provided in a part of a portion between the first and second semiconductor regions. In a plan view, the second semiconductor region has a first region not overlapping with the third semiconductor region, and the fourth semiconductor region overlaps with at least a part of the first region.
    Type: Application
    Filed: January 23, 2018
    Publication date: August 2, 2018
    Inventor: Ginjiro Toyoguchi
  • Patent number: 9985060
    Abstract: Each of multiple pixels includes a photoelectric conversion unit. A first holding unit is configured to hold a charge generated by the photoelectric conversion unit, at a location different from location of the photoelectric conversion unit. A second holding unit is configured to hold a charge held by the first holding unit at a location different from locations of both of the first holding unit and the photoelectric conversion unit. An amplifying unit includes an input node different from the second holding unit and is configured to output a signal based on a charge transferred to the input node from the second holding unit. A first discharge unit includes a charge draining node which is electrically connected to a line where a predetermined voltage is supplied. The first discharge unit discharges a charge held by the first holding unit to the charge draining node.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: May 29, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masahiro Kobayashi, Yuichiro Yamashita, Ginjiro Toyoguchi
  • Patent number: 9548328
    Abstract: A solid-state image sensor is provided. The sensor includes a substrate having a light-receiving surface. The substrate includes a charge accumulation portion that forms part of a photoelectric conversion element, a charge holding portion arranged at a position deeper than the charge accumulation portion from the light-receiving surface, and a first transfer portion configured to transfer charges generated by the photoelectric conversion element to the charge holding portion along a depth direction of the substrate. A distance between the charge holding portion and the light-receiving surface is not less than 4 ?m.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: January 17, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshinori Hasegawa, Ginjiro Toyoguchi, Masahiro Kobayashi
  • Patent number: 9544493
    Abstract: Provided is a solid-state imaging apparatus including: imaging pixels each configured to generate an imaging signal through photoelectric conversion; focus detection pixels each configured to generate a focusing signal through photoelectric conversion; and an adding unit configured to add the imaging signals generated by the imaging pixels to generate an added imaging signal, and configured to add the focusing signals generated by the focus detection pixels to generate an added focusing signal, in which a number of the focusing signals to be used by the adding unit to generate one added focusing signal is larger than a number of the imaging signals to be used by the adding unit to generate one added imaging signal, and operation for outputting the added focusing signal and operation for outputting each of the focusing signals without adding are selectively carried out.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: January 10, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ginjiro Toyoguchi
  • Patent number: 9502452
    Abstract: Each of multiple pixels includes a photoelectric conversion unit. A first holding unit is configured to hold a charge generated by the photoelectric conversion unit, at a location different from location of the photoelectric conversion unit. A second holding unit is configured to hold a charge held by the first holding unit at a location different from locations of both of the first holding unit and the photoelectric conversion unit. An amplifying unit includes an input node different from the second holding unit and is configured to output a signal based on a charge transferred to the input node from the second holding unit. A first discharge unit includes a charge draining node which is electrically connected to a line where a predetermined voltage is supplied. The first discharge unit discharges a charge held by the first holding unit to the charge draining node.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: November 22, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masahiro Kobayashi, Yuichiro Yamashita, Ginjiro Toyoguchi
  • Publication number: 20160155774
    Abstract: A solid-state image sensor is provided. The sensor includes a substrate having a light-receiving surface. The substrate includes a charge accumulation portion that forms part of a photoelectric conversion element, a charge holding portion arranged at a position deeper than the charge accumulation portion from the light-receiving surface, and a first transfer portion configured to transfer charges generated by the photoelectric conversion element to the charge holding portion along a depth direction of the substrate. A distance between the charge holding portion and the light-receiving surface is not less than 4 ?m.
    Type: Application
    Filed: November 9, 2015
    Publication date: June 2, 2016
    Inventors: Toshinori Hasegawa, Ginjiro Toyoguchi, Masahiro Kobayashi