Patents by Inventor Yuichiro Yamashita

Yuichiro Yamashita 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: 8736005
    Abstract: In a photoelectric conversion device capable of adding signals of photoelectric conversion elements included in each of photoelectric conversion units, each of the photoelectric conversion elements includes a first semiconductor region of a first conductivity type for collecting a signal charge, a second semiconductor region of a second conductivity type is arranged between the photoelectric conversion elements arranged adjacent to each other and included in the photoelectric conversion unit, and a third semiconductor region of the second conductivity type is arranged between the photoelectric conversion elements arranged adjacent to each other among the plurality of photoelectric conversion elements and included in different photoelectric conversion units arranged adjacent to each other. An impurity concentration of the second semiconductor region is lower than an impurity concentration of the third semiconductor region.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: May 27, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Kobayashi, Takafumi Kishi, Yuichiro Yamashita
  • Patent number: 8723232
    Abstract: A solid-state imaging apparatus, controlling a potential on a semiconductor substrate for an electronic shutter operation, includes: a first semiconductor region of the first conductivity type for forming a photoelectric conversion region; a second semiconductor region of the first conductivity type, formed separately from the photoelectric conversion region, for accumulating carriers; a third semiconductor region of a second conductivity type arranged under the second semiconductor region, for operating as a potential barrier; a fourth semiconductor region of the second conductivity type extending between the first semiconductor region and the semiconductor substrate, and between the third semiconductor region and the semiconductor substrate; and a first voltage supply portion for supplying a voltage to the third semiconductor region; wherein the first voltage supply portion includes a fifth semiconductor region of the second conductivity type arranged in the pixel region, and a first electrode connected to
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Kobayashi, Yuichiro Yamashita
  • Patent number: 8717452
    Abstract: An apparatus includes a plurality of pixels each including a charge storage part, a photoelectric conversion part, a first transfer part and a second transfer part, when a signal charge generated during one period is transferred to an amplifier, a control unit supplies pulses such that a turning-on pulse is supplied to the second transfer part while supplying a turning-off pulse to the first transfer part thereby transferring the stored signal charge to the amplifier, a turning-on pulse is then supplied to a reset part to reset the signal charge transferred to the amplifier, and subsequently a turning-on pulse is supplied to the first transfer part and the second transfer part to transfer the signal charge held in the photoelectric conversion part to the amplifier.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: May 6, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Yamashita, Yusuke Onuki
  • Patent number: 8710610
    Abstract: A solid-state imaging apparatus including pixels each including a photoelectric conversion element, and a light shielding layer covering the photoelectric conversion element is provided. For each of the photoelectric conversion elements, the light shielding layer includes a light shielding portion which shields a portion of incident light to the photoelectric conversion element, and an aperture which passes another portion of the incident light. The pixels include first and second pixels which have different areas on a planar view of the photoelectric conversion element. The area of the photoelectric conversion element in the first pixel is larger than the area of the photoelectric conversion element in the second pixel on the planar view. An area of the light shielding portion included in the first pixel is larger than an area of the light shielding portion included in the second pixel.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: April 29, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Kono, Shin Kikuchi, Yuichiro Yamashita, Masaru Fujimura, Shinichiro Shimizu, Yu Arishima
  • Patent number: 8710613
    Abstract: A pickup device according to the present invention includes a photoelectric conversion portion, a charge holding portion configured to include a first semiconductor region, and a transfer portion configured to include a transfer gate electrode that controls a potential between the charge holding portion and a sense node. A second semiconductor region is disposed on a surface of a semiconductor region between the control electrode and the transfer gate electrode. A third semiconductor region is disposed below the second semiconductor region. An impurity concentration of the third semiconductor region is higher than the impurity concentration of the first semiconductor region.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: April 29, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Yamashita, Masahiro Kobayashi, Yusuke Onuki
  • Patent number: 8687246
    Abstract: A solid-state imaging apparatus includes a pixel array in which a plurality of unit cells are arranged to form a plurality of rows and a plurality of columns, wherein each of the plurality of unit cells includes a pixel, and the pixel comprising a photoelectric conversion element and an in-pixel readout circuit which outputs a signal corresponding to charges generated in the photoelectric conversion element, power is supplied to the plurality of unit cells via a power supply line and a ground line, and at least one of the plurality of unit cells includes at least a part of a capacitive element having a first electrode connected to the power supply line and a second electrode connected to the ground line.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: April 1, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaru Fujimura, Shoji Kono, Yuichiro Yamashita, Shin Kikuchi, Shinichiro Shimizu, Yu Arishima
  • Patent number: 8675107
    Abstract: Each pixel has a photoelectric conversion unit configured to convert light into electrical charges and to store the electrical charges, an amplifying unit configured to amplify a signal based on the electrical charges stored in the photoelectric conversion unit and to output the signal to an output line, and a reset unit configured to reset a input part of the amplifying unit. A clip unit, which is configured to limit an electric voltage of the output line, includes an amplifying circuitry for amplifying a signal based on the electric voltage of the output line and an MOS transistor for limiting the electric voltage of the output line based on the difference in electric potential between the gate and source. The clip unit controls the electric potential of the gate of the MOS transistor by the amplifying circuitry.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: March 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Yamashita, Satoshi Kato, Toshiaki Ono, Hidekazu Takahashi
  • Patent number: 8659692
    Abstract: In an image sensor including a first column readout line and a second column readout line provided to each pixel column, a plurality of pixel rows are divided into pixel rows of a first group and pixel rows of a second group, pixels of the pixel rows of the first group output signals to the first column readout line, and pixels of the pixel rows of the second group output signals to the second column readout line. A shortest distance between a conversion region of a first pixel of a pixel row of the first group and the first column readout line to which a signal from the first pixel is output is not more than a shortest distance between the conversion region of the first pixel and the second column readout line to which the signals from the pixels belonging to the pixel rows of the second group are output.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: February 25, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Matsuda, Yuichiro Yamashita, Shoji Kono
  • Patent number: 8625010
    Abstract: A solid-state imaging apparatus including a plurality of pixels each including: a first holding portion for holding signal carriers from a photoelectric conversion portion; an amplifying portion for amplifying and reading a signal based on the signal carriers generated in the photoelectric conversion portion; and a carrier discharging control portion for discharging charge carriers in the photoelectric conversion portion to an OFD region, and having a carrier path between the photoelectric conversion portion and the first carrier holding portion, in which the solid-state imaging apparatus further includes a second carrier holding portion electrically connected with the first carrier portion in parallel through a first transfer unit, when viewed from an output node of the photoelectric conversion portion, thereby smoothing an movie imaging without causing discontinuous frame while suppressing generation of noise mixing into the charge carrier holding portion.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: January 7, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Yamashita, Masahiro Kobayashi, Takanori Watanabe, Shinsuke Kojima, Takeshi Ichikawa, Yusuke Onuki
  • Publication number: 20130299678
    Abstract: An imaging apparatus has an imaging area formed by arranging a plurality of imaging blocks each including a pixel array, a plurality of vertical signal lines, a horizontal output line commonly provided for the plurality of vertical signal lines to read out signals read out to the plurality of vertical signal lines, a first scanning circuit, and a second scanning circuit, wherein signals of the pixels of a selected row in the pixel array are read out to the plurality of vertical signal lines in accordance with a driving pulse from the first scanning circuit, the signals read out to the plurality of vertical signal lines are sequentially read out to the horizontal output line in accordance with a driving pulse from the second scanning circuit, and a length in a row direction of the pixel array is smaller than a length in a column direction of the pixel array.
    Type: Application
    Filed: July 18, 2013
    Publication date: November 14, 2013
    Inventors: Yu Arishima, Yuichiro Yamashita, Masaru Fujimura, Shin Kikuchi, Shoji Kono, Shinichiro Shimizu
  • Publication number: 20130300904
    Abstract: A solid-state imaging apparatus has a plurality of pixels, wherein each of the pixels includes: a photoelectric conversion element for converting incident light to an electric charge; an accumulating element accumulating the electric charge converted by the photoelectric conversion element; a first transfer element for transferring the electric charge converted by the photoelectric conversion element to the accumulating element; a second transfer element for transferring the electric charge accumulated in the accumulating element to a floating diffusion region; and an amplifying element for amplifying the electric charge in the floating diffusion region, wherein the first transfer element transfers the electric charge converted by the photoelectric conversion element to the accumulating element a plurality of times and causes the accumulating element to cumulatively accumulate the electric charge transferred the plurality of times.
    Type: Application
    Filed: July 15, 2013
    Publication date: November 14, 2013
    Inventors: Shuichiro Sugiyama, Yuichiro Yamashita
  • Patent number: 8582009
    Abstract: In a solid-state image sensor, first and second column readout lines are provided to each pixel column, pixel rows are divided into pixel rows of first and second groups, the first group is divided into subgroups each formed from pixels of an identical color, the second group is divided into subgroups each formed from pixels of an identical color, signals from pixels of the pixel rows of the first group are output to the first column readout lines, and signals from pixels of the pixel rows of the second group are output to the second column readout lines. Pixels of an identical subgroup in an identical pixel column share a conversion region and an amplification element, a given conversion region and another conversion region included in a pixel column identical to a pixel column of the given conversion region do not intersect with each other.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: November 12, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Kono, Nobuhiro Takeda, Yuichiro Yamashita, Takashi Matsuda
  • Patent number: 8570432
    Abstract: A focus adjustment apparatus for performing focus adjustment using a captured image and a plurality of point spread functions prepared in advance for each defocus direction and defocus amount is provided. The apparatus includes a focus adjusting stop whose aperture does not have rotational symmetry about an optical axis. Focus adjustment is performed by comparing the plurality of point spread functions prepared in advance with a point spread function of an image captured using the focus adjusting stop and not having rotational symmetry about the optical axis, obtaining the defocus direction and the defocus amount, and performing the focus adjustment according to the obtained defocus direction and defocus amount.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: October 29, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuichiro Yamashita
  • Patent number: 8564706
    Abstract: A solid-state imaging apparatus has a plurality of pixels, wherein each of the pixels includes: a photoelectric conversion element for converting incident light to an electric charge; an accumulating element accumulating the electric charge converted by the photoelectric conversion element; a first transfer element for transferring the electric charge converted by the photoelectric conversion element to the accumulating element; a second transfer element for transferring the electric charge accumulated in the accumulating element to a floating diffusion region; and an amplifying element for amplifying the electric charge in the floating diffusion region, wherein the first transfer element transfers the electric charge converted by the photoelectric conversion element to the accumulating element a plurality of times and causes the accumulating element to cumulatively accumulate the electric charge transferred the plurality of times.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: October 22, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuichiro Sugiyama, Yuichiro Yamashita
  • Patent number: 8552353
    Abstract: In a photoelectric conversion apparatus including charge storing portions in its imaging region, isolation regions for the charge storing portions include first isolation portion each having a PN junction, and second isolation portions each having an insulator. A second isolation portion is arranged between a charge storing portion and at least a part of a plurality of transistors.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: October 8, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Kobayashi, Yuichiro Yamashita
  • Publication number: 20130250137
    Abstract: In an image sensor including a first column readout line and a second column readout line provided to each pixel column, a plurality of pixel rows are divided into pixel rows of a first group and pixel rows of a second group, pixels of the pixel rows of the first group output signals to the first column readout line, and pixels of the pixel rows of the second group output signals to the second column readout line. A shortest distance between a conversion region of a first pixel of a pixel row of the first group and the first column readout line to which a signal from the first pixel is output is not more than a shortest distance between the conversion region of the first pixel and the second column readout line to which signals from the pixels belonging to the pixel rows of the second group are output.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 26, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takashi Matsuda, Yuichiro Yamashita, Shoji Kono
  • Publication number: 20130248688
    Abstract: An embodiment of an image pickup apparatus according to the present invention includes, on a semiconductor substrate, an imaging area having a plurality of pixel columns and a plurality of column circuits each of which is provided for each pixel column or a plurality of pixel columns. Each of the column circuits has a first circuit block and a second circuit block, and the first and second circuit blocks receive a bias voltage via a common wire. The first circuit block includes an amplifier circuit. The second circuit block is configured to be capable of switching between a first mode and a second mode with smaller power consumption than the first mode. A shift period from the second mode to the first mode by the second circuit block is a period excluding a period during which an amplifier circuit in the first circuit block is performing an amplifying operation.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 26, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuichiro Yamashita, Takashi Matsuda
  • Publication number: 20130235244
    Abstract: An image pickup device is provided, capable of complete correction with data of once analog-to-digital conversion, and prevention of excess use of switches and analog devices and/or erroneous correction, including: an image sensor having a plurality of analog-to-digital converters determining conversion results from a digital signal of higher order bit through separate steps of two or more times; a first correction unit which has a correction factor for correcting nonlinear errors of the plurality of analog-to-digital converters so as to adapt to the analog-to-digital converters and corrects a nonlinear error of a digital signal output from respective analog-to-digital converters based on a correction factor corresponding to respective analog-to-digital converters, characterized in that the first correction unit corrects the nonlinear errors after converting the digital signals from the plurality of analog-to-digital converters into a serial output.
    Type: Application
    Filed: April 26, 2013
    Publication date: September 12, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yuichiro Yamashita
  • Patent number: 8530989
    Abstract: A solid-state imaging apparatus comprising a plurality of pixels each including a photoelectric conversion element, and a light shielding layer which covers the photoelectric conversion element is provided. The light shielding layer comprises a first light shielding portion which covers at least part of a region between the photoelectric conversion elements that are adjacent to each other, and a second light shielding portion for partially shielding light incident on the photoelectric conversion element of each of the plurality of pixels. An aperture is provided for the light shielding layer, the remaining component of the incident light passing through the aperture. A shape of the aperture includes a cruciform portion including a portion extending in a first direction and a portion extending in a second direction that intersects the first direction.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: September 10, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Kikuchi, Yuichiro Yamashita, Masaru Fujimura, Shoji Kono, Yu Arishima, Shinichiro Shimizu
  • Patent number: 8520102
    Abstract: A solid-state imaging apparatus is provided that including a plurality of amplifiers each one amplifying a signal from each one of a plurality of pixels. The amplifier including first and second field effect transistors, gate electrodes of which are connected to the same voltage node (VBL); and a first wiring connected between the voltage node and the gate electrodes of the first and second field effect transistors. The first and second field effect transistors are arranged in a direction perpendicular to a direction in which the plurality of amplifiers is arranged. Material of the first wiring has a resistivity smaller than that of the gate electrodes of the first and second field effect transistors.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: August 27, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Ogura, Yuichiro Yamashita, Toru Koizumi