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).

  • Patent number: 9247172
    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: Grant
    Filed: September 19, 2013
    Date of Patent: January 26, 2016
    Assignee: Sony Corporation
    Inventors: Takeshi Yanagita, Keiji Mabuchi, Hiroaki Ishiwata
  • Patent number: 9219097
    Abstract: A method for producing a solid-state imaging element which has photoconversion pixels, the method including forming an impurity region of the first conduction type and a second impurity region of the second conduction type on the impurity region of the first conduction type by ion implantation by using the same mask; forming on the surface of the semiconductor substrate a transfer gate constituting the charge transfer section which extends over the second impurity region of the second conduction type; forming a charge accumulating region of the first conduction type constituting the sensor section by ion implantation; and forming a first impurity region of the second conduction type, which has a higher impurity concentration than the second impurity region of the second conduction type, by ion implantation.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: December 22, 2015
    Assignee: SONY CORPORATION
    Inventors: Sanghoon Ha, Hiroaki Ishiwata
  • Patent number: 9148591
    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: December 21, 2012
    Date of Patent: September 29, 2015
    Assignee: Sony Corporation
    Inventors: Hitoshi Moriya, Kazuyoshi Yamashita, Hiroyuki Mori, Hiroaki Ishiwata
  • Patent number: 9147705
    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: February 25, 2013
    Date of Patent: September 29, 2015
    Assignee: SONY CORPORATION
    Inventor: Hiroaki Ishiwata
  • Publication number: 20150124139
    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: October 30, 2014
    Publication date: May 7, 2015
    Inventors: Hiroaki Ishiwata, Hideo Kido, Norihiro Kubo, Tetsuya Uchida
  • Publication number: 20150115385
    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 30, 2014
    Publication date: April 30, 2015
    Inventors: Hiroaki Ishiwata, Sanghoon Ha
  • Patent number: 8976283
    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: February 7, 2014
    Date of Patent: March 10, 2015
    Assignee: Sony Corporation
    Inventors: Hiroaki Ishiwata, Sanghoon Ha
  • Publication number: 20150048474
    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: February 25, 2013
    Publication date: February 19, 2015
    Inventor: Hiroaki Ishiwata
  • Patent number: 8941766
    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: February 7, 2014
    Date of Patent: January 27, 2015
    Assignee: Sony Corporation
    Inventors: Hiroaki Ishiwata, Sanghoon Ha
  • Publication number: 20150009377
    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: Application
    Filed: September 24, 2014
    Publication date: January 8, 2015
    Inventor: Hiroaki Ishiwata
  • Patent number: 8809922
    Abstract: Disclosed is a solid-state image sensing device including: a first photoelectric conversion element having a first semiconductor region of a first conductivity type formed inside a semiconductor substrate; a second photoelectric conversion element having a second semiconductor region of a first conductivity type formed at a deeper position of the semiconductor substrate than the first photoelectric conversion element; a gate electrode laminated on the semiconductor substrate and to which a predetermined voltage is applied at a charge transfer time; a floating diffusion region to which the charges accumulated in the first photoelectric conversion element and the second photoelectric conversion element are transferred at the charge transfer time; and a third semiconductor region of a first conductivity type arranged between the first semiconductor region and the second semiconductor region in a depth direction of the semiconductor.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: August 19, 2014
    Assignee: Sony Corporation
    Inventors: Hitoshi Moriya, Hiroaki Ishiwata, Kazuyoshi Yamashita, Hiroyuki Mori
  • Patent number: 8786740
    Abstract: An imaging device includes: first green pixels; and second green pixels adjacent to the respective first green pixels in a first direction, which is the direction in which electric charge accumulated in the pixels is read, wherein the dimension of the first and second green pixels in a second direction perpendicular to the first direction is twice the dimension of the first and second green pixels in the first direction.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: July 22, 2014
    Assignee: Sony Corporation
    Inventors: Sanghoon Ha, Hiroaki Ishiwata
  • Publication number: 20140152881
    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 7, 2014
    Publication date: June 5, 2014
    Applicant: Sony Corporation
    Inventors: Hiroaki Ishiwata, Sanghoon Ha
  • Publication number: 20140110762
    Abstract: A method for producing a solid-state imaging element which has photoconversion pixels, the method including forming an impurity region of the first conduction type and a second impurity region of the second conduction type on the impurity region of the first conduction type by ion implantation by using the same mask; forming on the surface of the semiconductor substrate a transfer gate constituting the charge transfer section which extends over the second impurity region of the second conduction type; forming a charge accumulating region of the first conduction type constituting the sensor section by ion implantation; and forming a first impurity region of the second conduction type, which has a higher impurity concentration than the second impurity region of the second conduction type, by ion implantation.
    Type: Application
    Filed: December 31, 2013
    Publication date: April 24, 2014
    Applicant: Sony Corporation
    Inventors: Sanghoon Ha, Hiroaki Ishiwata
  • Patent number: 8704921
    Abstract: A solid-state imaging device includes: photodiodes formed for pixels arranged on a light sensing surface of a semiconductor substrate; a signal reading unit formed on the semiconductor substrate to read a signal charge or a voltage; an insulating film formed on the semiconductor substrate and including optical waveguides; color filters formed on the insulating film; and on-chip lenses formed on the color filters. The first and second pixel combinations are alternately arranged both in the horizontal and vertical directions, the first pixel combination having a layout in which two green pixels are arranged both in the horizontal and vertical directions and a total of four pixels are arranged, the second pixel combination having a layout in which two pixels are arranged both in the horizontal and vertical directions, a total of four pixels are arranged, and two red pixels and two blue pixels are arranged cater cornered.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: April 22, 2014
    Assignee: Sony Corporation
    Inventors: Hiroaki Ishiwata, Sanghoon Ha
  • Patent number: 8697477
    Abstract: Disclosed herein is a method for producing a solid-state imaging element which has pixels, each including a sensor section that performs photoelectric conversion and a charge transfer section that transfers charges generated by the sensor section. The method includes: forming an impurity region of the first conduction type and a second impurity region of the second conduction type on the impurity region of the first conduction type by ion implantation by using the same mask; forming on the surface of the semiconductor substrate a transfer gate constituting the charge transfer section which extends over the second impurity region of the second conduction type; forming a charge accumulating region of the first conduction type constituting the sensor section by ion implantation; and forming a first impurity region of the second conduction type, which has a higher impurity concentration than the second impurity region of the second conduction type, by ion implantation.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: April 15, 2014
    Assignee: Sony Corporation
    Inventors: Sanghoon Ha, Hiroaki Ishiwata
  • Patent number: 8670053
    Abstract: A solid-state imaging device, includes: plural unit pixels including a photoelectric conversion portion converting incident light into an electrical signal, and a waveguide having a quadratic curve surface at an inner surface and introducing the incident light to the photoelectric conversion portion.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: March 11, 2014
    Assignee: Sony Corporation
    Inventors: Yoshimichi Kumagai, Hiroaki Ishiwata
  • Publication number: 20140042302
    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: September 19, 2013
    Publication date: February 13, 2014
    Applicant: Sony Corporation
    Inventors: Takeshi Yanagita, Keiji Mabuchi, Hiroaki Ishiwata
  • Patent number: 8618623
    Abstract: Disclosed herein is a solid-state image pickup device of a type wherein a pixel is configured to include a sensor unit capable of photoelectric conversion, the image pickup device including: a semiconductor substrate; a charge storage region of a first conduction type, which is formed in the semiconductor substrate and constitutes a sensor unit; a charge storage sub-region made of an impurity region of the first conduction type, which is formed, in plural layers, in the semiconductor substrate below the charge storage region serving as a main charge storage region and wherein at least one or more of the plural layers are formed entirely across a pixel; and a device isolation region that is formed in the semiconductor substrate, isolates pixels from one another, and is made of an impurity region of a second conduction type.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: December 31, 2013
    Assignee: Sony Corporation
    Inventors: Norihiro Kubo, Hiroaki Ishiwata, Sanghoon Ha
  • Publication number: 20130341748
    Abstract: A solid-state imaging device, includes: plural unit pixels including a photoelectric conversion portion converting incident light into an electrical signal, and a waveguide having a quadratic curve surface at an inner surface and introducing the incident light to the photoelectric conversion portion.
    Type: Application
    Filed: August 23, 2013
    Publication date: December 26, 2013
    Applicant: SONY CORPORATION
    Inventors: Yoshimichi Kumagai, Hiroaki Ishiwata