Patents by Inventor Hiroaki Ishiwata

Hiroaki Ishiwata 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: 20170237920
    Abstract: A solid-state imaging device includes a pixel array unit in which a plurality of imaging pixels configured to generate an image, and a plurality of phase difference detection pixels configured to perform phase difference detection are arranged, each of the plurality of phase difference detection pixels including a plurality of photoelectric conversion units, a plurality of floating diffusions configured to convert charges stored in the plurality of photoelectric conversion units into voltage, and a plurality of amplification transistors configured to amplify the converted voltage in the plurality of floating diffusions.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 17, 2017
    Inventors: Hiroaki Ishiwata, Hideo Kido, Norihiro Kubo, Tetsuya Uchida
  • Publication number: 20170201705
    Abstract: The present technology relates to a solid-state imaging device and an electronic apparatus that realize a high frame rate image capture without deteriorating an image quality. A floating diffusion holds a charge accumulated on one or more photoelectric conversion units. A plurality of amplification transistors read out a signal corresponding to the charge held by the floating diffusion. The signal read out by the amplification transistor is output to a vertical signal line. The plurality of amplification transistors are connected in parallel. The present technology is applicable to a CMOS image sensor, for example.
    Type: Application
    Filed: June 5, 2015
    Publication date: July 13, 2017
    Inventor: HIROAKI ISHIWATA
  • Patent number: 9706145
    Abstract: A solid-state imaging element, a driving method therefor, and an electronic apparatus, by which the characteristics of phase-difference pixels can be made constant irrespective of a chip position are provided. In a pixel array section, a normal pixel including a photodiode (PD) that receives and photoelectrically converts incident light such that a color component signal is obtained, and a phase-difference pixel including a pair of a photodiode (PD1) and a photodiode (PD2) including light-receiving surfaces having a size depending on an image height such that a phase difference detection signal is obtained are arranged in a matrix form. The pair of the photodiode (PD1) and the photodiode (PD2) each include a first region serving as a charge accumulation main part and a second region that performs photoelectric conversion and contributes to charge transfer to the main part. The present technology is applicable to a CMOS image sensor, for example.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: July 11, 2017
    Assignee: Sony Corporation
    Inventor: Hiroaki Ishiwata
  • Publication number: 20170194371
    Abstract: A solid-state imaging device including an imaging area where a plurality of unit pixels are disposed to capture a color image, wherein each of the unit pixels includes: a plurality of photoelectric conversion portions; a plurality of transfer gates, each of which is disposed in each of the photoelectric conversion portions to transfer signal charges from the photoelectric conversion portion; and a floating diffusion to which the signal charges are transferred from the plurality of the photoelectric conversion portions by the plurality of the transfer gates, wherein the plurality of the photoelectric conversion portions receive light of the same color to generate the signal charges, and wherein the signal charges transferred from the plurality of the photoelectric conversion portions to the floating diffusion are added to be output as an electrical signal.
    Type: Application
    Filed: March 21, 2017
    Publication date: July 6, 2017
    Inventor: Hiroaki Ishiwata
  • Publication number: 20170148836
    Abstract: A solid-state imaging device includes a semiconductor substrate; and a pixel unit having a plurality of pixels on the semiconductor substrate, wherein the pixel unit includes first pixel groups having two or more pixels and second pixel groups being different from the first pixel groups, wherein a portion of the pixels in the first pixel groups and a portion of the pixels in the second pixel groups share a floating diffusion element.
    Type: Application
    Filed: February 6, 2017
    Publication date: May 25, 2017
    Applicant: Sony Semiconductor Solutions Corporation
    Inventors: Hiroaki Ishiwata, Sanghoon Ha
  • Publication number: 20170148835
    Abstract: A solid-state imaging device includes a semiconductor substrate; and a pixel unit having a plurality of pixels on the semiconductor substrate, wherein the pixel unit includes first pixel groups having two or more pixels and second pixel groups being different from the first pixel groups, wherein a portion of the pixels in the first pixel groups and a portion of the pixels in the second pixel groups share a floating diffusion element.
    Type: Application
    Filed: February 3, 2017
    Publication date: May 25, 2017
    Applicant: Sony Semiconductor Solutions Corporation
    Inventors: Hiroaki Ishiwata, Sanghoon Ha
  • Patent number: 9653499
    Abstract: A solid-state imaging device including an imaging area where a plurality of unit pixels are disposed to capture a color image, wherein each of the unit pixels includes: a plurality of photoelectric conversion portions; a plurality of transfer gates, each of which is disposed in each of the photoelectric conversion portions to transfer signal charges from the photoelectric conversion portion; and a floating diffusion to which the signal charges are transferred from the plurality of the photoelectric conversion portions by the plurality of the transfer gates, wherein the plurality of the photoelectric conversion portions receive light of the same color to generate the signal charges, and wherein the signal charges transferred from the plurality of the photoelectric conversion portions to the floating diffusion are added to be output as an electrical signal.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: May 16, 2017
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventor: Hiroaki Ishiwata
  • Patent number: 9641780
    Abstract: A solid-state imaging device includes a pixel array unit in which a plurality of imaging pixels configured to generate an image, and a plurality of phase difference detection pixels configured to perform phase difference detection are arranged, each of the plurality of phase difference detection pixels including a plurality of photoelectric conversion units, a plurality of floating diffusions configured to convert charges stored in the plurality of photoelectric conversion units into voltage, and a plurality of amplification transistors configured to amplify the converted voltage in the plurality of floating diffusions.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: May 2, 2017
    Assignee: Sony Corporation
    Inventors: Hiroaki Ishiwata, Hideo Kido, Norihiro Kubo, Tetsuya Uchida
  • Patent number: 9620554
    Abstract: A solid-state image pickup unit includes substrate; a red pixel including a red charge storage section; a blue pixel including a blue charge storage section; and a green pixel including a plurality of green charge storage sections, the red charge storage section and the blue charge storage section being provided in the substrate. Then, the plurality of green charge storage sections are arranged in the substrate along a thickness direction of the substrate.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: April 11, 2017
    Assignee: SONY CORPORATION
    Inventor: Hiroaki Ishiwata
  • Patent number: 9491351
    Abstract: There is provided a solid-state imaging device which includes a focus detection pixel that has a light shielding film, which is formed on a light receiving surface of a photoelectric conversion portion and shields light in a part of the light receiving surface, performs pupil division and photoelectric conversion of a received light flux and acquires a phase difference detection signal, where the light shielding film is formed avoiding a gate electrode of a reading gate portion to read a signal charge from the photoelectric conversion portion.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: November 8, 2016
    Assignee: SONY CORPORATION
    Inventors: Hitoshi Moriya, Kazuyoshi Yamashita, Hiroyuki Mori, Hiroaki Ishiwata
  • Publication number: 20160260758
    Abstract: A solid-state imaging device including an imaging area where a plurality of unit pixels are disposed to capture a color image, wherein each of the unit pixels includes: a plurality of photoelectric conversion portions; a plurality of transfer gates, each of which is disposed in each of the photoelectric conversion portions to transfer signal charges from the photoelectric conversion portion; and a floating diffusion to which the signal charges are transferred from the plurality of the photoelectric conversion portions by the plurality of the transfer gates, wherein the plurality of the photoelectric conversion portions receive light of the same color to generate the signal charges, and wherein the signal charges transferred from the plurality of the photoelectric conversion portions to the floating diffusion are added to be output as an electrical signal.
    Type: Application
    Filed: May 17, 2016
    Publication date: September 8, 2016
    Inventor: Hiroaki Ishiwata
  • Patent number: 9438833
    Abstract: Provided is a solid-state imaging device including an imaging area where a plurality of unit pixels are disposed to capture a color image, wherein each of the unit pixels includes: a plurality of photoelectric conversion portions; a plurality of transfer gates, each of which is disposed in each of the photoelectric conversion portions to transfer signal charges from the photoelectric conversion portion; and a floating diffusion to which the signal charges are transferred from the plurality of the photoelectric conversion portions by the plurality of the transfer gates, wherein the plurality of the photoelectric conversion portions receive light of the same color to generate the signal charges, and wherein the signal charges transferred from the plurality of the photoelectric conversion portions to the floating diffusion are added to be output as an electrical signal.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: September 6, 2016
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventor: Hiroaki Ishiwata
  • Publication number: 20160234449
    Abstract: A solid-state imaging element, a driving method therefor, and an electronic apparatus, by which the characteristics of phase-difference pixels can be made constant irrespective of a chip position are provided. In a pixel array section, a normal pixel including a photodiode (PD) that receives and photoelectrically converts incident light such that a color component signal is obtained, and a phase-difference pixel including a pair of a photodiode (PD1) and a photodiode (PD2) including light-receiving surfaces having a size depending on an image height such that a phase difference detection signal is obtained are arranged in a matrix form. The pair of the photodiode (PD1) and the photodiode (PD2) each include a first region serving as a charge accumulation main part and a second region that performs photoelectric conversion and contributes to charge transfer to the main part. The present technology is applicable to a CMOS image sensor, for example.
    Type: Application
    Filed: September 12, 2014
    Publication date: August 11, 2016
    Inventor: Hiroaki ISHIWATA
  • Publication number: 20160181304
    Abstract: A solid-state imaging device includes a semiconductor substrate; and a pixel unit having a plurality of pixels on the semiconductor substrate, wherein the pixel unit includes first pixel groups having two or more pixels and second pixel groups being different from the first pixel groups, wherein a portion of the pixels in the first pixel groups and a portion of the pixels in the second pixel groups share a floating diffusion element.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 23, 2016
    Inventors: Hiroaki Ishiwata, Sanghoon Ha
  • Publication number: 20160155767
    Abstract: A solid-state imaging device includes pixels each of which has a photoelectric conversion portion that senses light and converts the sensed light into a charge; and an amplifying portion which is shared by a predetermined number of the pixels, amplifies the generated charge in the photoelectric conversion portion, and outputs a level of signal corresponding to the charge, wherein the a predetermined number of the pixels which share the amplifying portion are arranged in a first direction extending along a signal line via which the amplifying portion outputs the signal, and wherein a length of an area where the amplifying portion is formed along a second direction substantially intersecting the first direction is set to be equal to or more than a length of one pixel and to be less than a length of two pixels in the second direction.
    Type: Application
    Filed: February 8, 2016
    Publication date: June 2, 2016
    Inventor: Hiroaki Ishiwata
  • Publication number: 20160088254
    Abstract: A solid state image sensor includes a pixel array, as well as charge-to-voltage converters, reset gates, and amplifiers each shared by a plurality of pixels in the array. The voltage level of the reset gate power supply is set higher than the voltage level of the amplifier power supply. Additionally, charge overflowing from photodetectors in the pixels may be discarded into the charge-to-voltage converters. The image sensor may also include a row scanner configured such that, while scanning a row in the pixel array to read out signals therefrom, the row scanner resets the charge in the photodetectors of the pixels sharing a charge-to-voltage converter with pixels on the readout row. The charge reset is conducted simultaneously with or prior to reading out the signals from the pixels on the readout row.
    Type: Application
    Filed: December 2, 2015
    Publication date: March 24, 2016
    Inventors: Takeshi Yanagita, Keiji Mabuchi, Hiroaki Ishiwata
  • Publication number: 20160049440
    Abstract: A solid-state image pickup unit includes substrate; a red pixel including a red charge storage section; a blue pixel including a blue charge storage section; and a green pixel including a plurality of green charge storage sections, the red charge storage section and the blue charge storage section being provided in the substrate. Then, the plurality of green charge storage sections are arranged in the substrate along a thickness direction of the substrate.
    Type: Application
    Filed: August 20, 2015
    Publication date: February 18, 2016
    Inventor: Hiroaki ISHIWATA
  • Patent number: 9257465
    Abstract: A solid-state imaging device includes pixels each of which has a photoelectric conversion portion that senses light and converts the sensed light into a charge; and an amplifying portion which is shared by a predetermined number of the pixels, amplifies the generated charge in the photoelectric conversion portion, and outputs a level of signal corresponding to the charge, wherein the a predetermined number of the pixels which share the amplifying portion are arranged in a first direction extending along a signal line via which the amplifying portion outputs the signal, and wherein a length of an area where the amplifying portion is formed along a second direction substantially intersecting the first direction is set to be equal to or more than a length of one pixel and to be less than a length of two pixels in the second direction.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: February 9, 2016
    Assignee: SONY CORPORATION
    Inventor: Hiroaki Ishiwata
  • Publication number: 20160037054
    Abstract: There is provided a solid-state imaging device which includes a focus detection pixel that has a light shielding film, which is formed on a light receiving surface of a photoelectric conversion portion and shields light in a part of the light receiving surface, performs pupil division and photoelectric conversion of a received light flux and acquires a phase difference detection signal, where the light shielding film is formed avoiding a gate electrode of a reading gate portion to read a signal charge from the photoelectric conversion portion.
    Type: Application
    Filed: August 7, 2015
    Publication date: February 4, 2016
    Inventors: HITOSHI MORIYA, KAZUYOSHI YAMASHITA, HIROYUKI MORI, HIROAKI ISHIWATA
  • Patent number: 9245918
    Abstract: A solid-state imaging device includes a semiconductor substrate; and a pixel unit having a plurality of pixels on the semiconductor substrate, wherein the pixel unit includes first pixel groups having two or more pixels and second pixel groups being different from the first pixel groups, wherein a portion of the pixels in the first pixel groups and a portion of the pixels in the second pixel groups share a floating diffusion element.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: January 26, 2016
    Assignee: Sony Corporation
    Inventors: Hiroaki Ishiwata, Sanghoon Ha