Patents by Inventor Akihiro Kawano

Akihiro Kawano 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: 20170222548
    Abstract: Provided are a switching regulator and a voltage-current conversion circuit configured to shorten a start-up period. The voltage-current conversion circuit includes: a first MOS transistor of a first conductivity type including a gate and a drain connected in common, and a source connected to a first power supply terminal; a first resistor connected between the drain of the first MOS transistor and a second power supply terminal; and a correction current generation unit including a second resistor, and configured to generate, as a correction current, through use of the second resistor, a current corresponding to a current generated when a voltage corresponding to an absolute value of a gate-source voltage of the first MOS transistor is applied to the first resistor. The voltage-current conversion circuit is configured to add the correction current to a current flowing through the first resistor, to thereby generate the conversion current.
    Type: Application
    Filed: January 24, 2017
    Publication date: August 3, 2017
    Inventors: Kosuke TAKADA, Akihiro KAWANO
  • Patent number: 9701345
    Abstract: A reinforcement is configured to have a corner portion corresponding to a corner portion of a side sill inner. Herein, the corner portion of the reinforcement forms a reinforcement ridgeline extending in a vehicle longitudinal direction. The reinforcement is provided such that the reinforcement ridgeline and a side-sill-inner upper ridgeline formed at a corner portion of the side sill inner overlap with each other over a range from a specified area where a wheel outward displaced in a vehicle collision is capable of contacting a side sill to a connection portion where a cross member connects to the side sill inner.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: July 11, 2017
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Masahide Kanemori, Nobuyuki Nakayama, Akihiro Kawano, Hideyuki Tsukamoto, Soukichi Kikuchi, Takashi Hamada
  • Publication number: 20170179812
    Abstract: To provide a soft start circuit capable of obtaining a high-accuracy soft start time. The soft start circuit is equipped with a constant current source, an output terminal which outputs a soft start voltage, a ground terminal, a first transistor which is connected between the constant current source and the ground terminal and has a gate and a drain both short-circuited, a second transistor which is connected between the constant current source and the output terminal and receives a clock signal at a gate thereof, and a capacitor connected between the second transistor and the ground terminal.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 22, 2017
    Inventors: Akihiro KAWANO, Katsuya GOTO
  • Publication number: 20170092582
    Abstract: There is provided an image capturing apparatus including a pixel circuit that generates a pixel signal based on an electric charge generated by photoelectric conversion and a logic circuit that outputs a signal based on the pixel signal. The image capturing apparatus includes a first contact plug connected to a source or a drain of a first transistor constituting the pixel circuit and a second contact plug connected to a source or a drain of a second transistor constituting the logic circuit. A diameter of the first contact plug is smaller than a diameter of the second contact plug.
    Type: Application
    Filed: September 28, 2016
    Publication date: March 30, 2017
    Inventors: Akihiro Kawano, Tsutomu Tange, Masao Ishioka, Koichi Tazoe
  • Publication number: 20160353044
    Abstract: A photoelectric conversion device has an insulator film disposed on a silicon layer having a photoelectric conversion region, the insulator film having a portion overlapped with the photoelectric conversion region, a silicon oxide film disposed on the insulator film, the silicon oxide film having a portion overlapped with the photoelectric conversion region, an electroconductive member disposed between the insulator film and the silicon oxide film, and a silicon oxide layer disposed between the electroconductive member and the silicon oxide film, in which the portion overlapped with the photoelectric conversion region of the silicon oxide film is in contact with the portion overlapped with the photoelectric conversion region of the insulator film and the hydrogen concentration of the silicon oxide film is greater than the hydrogen concentration of the silicon oxide layer.
    Type: Application
    Filed: May 26, 2016
    Publication date: December 1, 2016
    Inventors: Akihiro Kawano, Yukinobu Suzuki, Nobutaka Ukigaya, Takayasu Kanesada, Takeshi Aoki, Hiroshi Takakusagi
  • Publication number: 20160339970
    Abstract: A deflector comprises a protrusion portion which protrudes downward, including a slant face portion slating obliquely rearward and downward, and a vertical wall portion which is provided in back of the protrusion portion to extend in a vehicle width direction. A lower end portion of the vertical wall portion is positioned at a lower level than a rear end portion of the slant face portion. The lower end portion of part of the vertical wall portion located inward from the other part of the vertical wall portion located so as to overlap the front wheel in a front view is positioned at a higher level than the lower end portion of the other part of the vertical wall portion located so as to overlap the front wheel in the front view.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 24, 2016
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Nobuyuki SHIBUTAKE, Nobuyuki NAKAYAMA, Koji YOSHITAKE, Akihiro KAWANO, Masafumi ABURAME
  • Publication number: 20160244098
    Abstract: A reinforcement is configured to have a corner portion corresponding to a corner portion of a side sill inner. Herein, the corner portion of the reinforcement forms a reinforcement ridgeline extending in a vehicle longitudinal direction. The reinforcement is provided such that the reinforcement ridgeline and a side-sill-inner upper ridgeline formed at a corner portion of the side sill inner overlap with each other over a range from a specified area where a wheel outward displaced in a vehicle collision is capable of contacting a side sill to a connection portion where a cross member connects to the side sill inner.
    Type: Application
    Filed: February 16, 2016
    Publication date: August 25, 2016
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Masahide KANEMORI, Nobuyuki NAKAYAMA, Akihiro KAWANO, Hideyuki TSUKAMOTO, Soukichi KIKUCHI, Takashi HAMADA
  • Patent number: 9391227
    Abstract: A substrate includes a first region having photoelectric conversion portions and a second region having an element included in a signal processing circuit. An insulator including first and second parts respectively arranged on the first and second regions is formed on the substrate. Openings are formed in the insulator and respectively superposed on the photoelectric conversion portions. A first member is formed in the openings and on the second part of the insulator after forming the openings. At least a portion of the first member arranged on the second region is removed. The first member is planarized after removing at least the portion of the first member. A second insulator is formed on the first and second regions after planarizing the first member. A through-hole is formed in a part of the second insulator. No planarization with grinding is performed after forming the second insulator and before forming the through-hole.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: July 12, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadashi Sawayama, Takashi Usui, Akihiro Kawano, Hiroaki Naruse, Sho Suzuki, Takehito Okabe, Masatsugu Itahashi, Daisuke Uki
  • Patent number: 9270162
    Abstract: There is provided a switching regulator including an overcurrent protection circuit which is able to automatically return from an overcurrent state. The switching regulator includes an error amplification circuit which amplifies a difference between a feedback voltage and a reference voltage based on an output voltage and outputs the amplified difference; a PWM comparator which compares an output of the error amplification circuit with an output of a triangular wave oscillation circuit, and controls an output transistor; an overcurrent detection circuit which monitors a load current flowing through a load connected to an output terminal, detects that the load current is an overcurrent, and outputs an overcurrent detection signal causing a switching operation to stop; and a negative feedback control circuit which receives the overcurrent detection signal, and controls the load current to a predetermined current value.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: February 23, 2016
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Akihiro Kawano, Michiyasu Deguchi
  • Patent number: 9087762
    Abstract: A method for manufacturing a semiconductor device is provided. The method includes forming a wiring pattern made of copper, annealing the wiring pattern in an atmosphere of inert gas, and performing plasma processing on the wiring pattern using a reducing gas after the annealing. A temperature in the plasma processing is equal to or below a temperature in the annealing.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: July 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiro Kawano, Hiroaki Sano
  • Publication number: 20150171137
    Abstract: A method for manufacturing a semiconductor device is provided. The method includes forming a wiring pattern made of copper, annealing the wiring pattern in an atmosphere of inert gas, and performing plasma processing on the wiring pattern using a reducing gas after the annealing. A temperature in the plasma processing is equal to or below a temperature in the annealing.
    Type: Application
    Filed: November 26, 2014
    Publication date: June 18, 2015
    Inventors: Akihiro Kawano, Hiroaki Sano
  • Patent number: 8852987
    Abstract: A method of manufacturing an image pickup device includes a step of forming a filling member such that the filling member covers a light guiding part and a peripheral part provided in a film. The light guiding part is positioned on an image pickup region of the image pickup device and has openings that correspond to respective photoelectric conversion portions. The peripheral part is positioned on a peripheral region of the image pickup device. The filling member fills in the openings. The method includes a step of processing the filling member. The method includes a step of forming light guiding members, which is performed after the step of processing filling member has been performed, by a polishing process performed on the filling member so that the light guiding part is exposed. The light guiding members are part of the filling member and disposed in the openings.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: October 7, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Tsukagoshi, Tadashi Sawayama, Akihiro Kawano, Sho Suzuki, Takehito Okabe, Masatsugu Itahashi
  • Publication number: 20140247523
    Abstract: There is provided a switching regulator including an overcurrent protection circuit which is able to automatically return from an overcurrent state. The switching regulator includes an error amplification circuit which amplifies a difference between a feedback voltage and a reference voltage based on an output voltage and outputs the amplified difference; a PWM comparator which compares an output of the error amplification circuit with an output of a triangular wave oscillation circuit, and controls an output transistor; an overcurrent detection circuit which monitors a load current flowing through a load connected to an output terminal, detects that the load current is an overcurrent, and outputs an overcurrent detection signal causing a switching operation to stop; and a negative feedback control circuit which receives the overcurrent detection signal, and controls the load current to a predetermined current value.
    Type: Application
    Filed: March 3, 2014
    Publication date: September 4, 2014
    Applicant: Seiko Instruments Inc.
    Inventors: Akihiro KAWANO, Michiyasu DEGUCHI
  • Patent number: 8823853
    Abstract: An image sensor includes a charge accumulation region of a first conductivity type, an isolating semiconductor region formed from an impurity semiconductor region of a second conductivity type, a channel stop region formed from an impurity semiconductor region of the second conductivity type which is located on the isolating semiconductor region, and an insulator arranged on the channel stop region. The insulator includes a first insulating portion arranged above the isolating semiconductor region via the channel stop region, a second insulating portion arranged adjacent to an outside of the first insulating portion, wherein thickness of the second insulating potion decreases with an increase in distance from the first insulating portion, and a third insulating portion formed on the first insulating portion, wherein the third insulating portion has upper and side faces connecting the upper face to an upper face of the second insulating portion.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: September 2, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiro Kawano
  • Publication number: 20140045292
    Abstract: A method of manufacturing an image pickup device includes a step of forming a filling member such that the filling member covers a light guiding part and a peripheral part provided in a film. The light guiding part is positioned on an image pickup region of the image pickup device and has openings that correspond to respective photoelectric conversion portions. The peripheral part is positioned on a peripheral region of the image pickup device. The filling member fills in the openings. The method includes a step of processing the filling member. The method includes a step of forming light guiding members, which is performed after the step of processing filling member has been performed, by a polishing process performed on the filling member so that the light guiding part is exposed. The light guiding members are part of the filling member and disposed in the openings.
    Type: Application
    Filed: August 5, 2013
    Publication date: February 13, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yusuke Tsukagoshi, Tadashi Sawayama, Akihiro Kawano, Sho Suzuki, Takehito Okabe, Masatsugu Itahashi
  • Publication number: 20140045294
    Abstract: A substrate includes a first region having photoelectric conversion portions and a second region having an element included in a signal processing circuit. An insulator including first and second parts respectively arranged on the first and second regions is formed on the substrate. Openings are formed in the insulator and respectively superposed on the photoelectric conversion portions. A first member is formed in the openings and on the second part of the insulator after forming the openings. At least a portion of the first member arranged on the second region is removed. The first member is planarized after removing at least the portion of the first member. A second insulator is formed on the first and second regions after planarizing the first member. A through-hole is formed in a part of the second insulator. No planarization with grinding is performed after forming the second insulator and before forming the through-hole.
    Type: Application
    Filed: August 5, 2013
    Publication date: February 13, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tadashi Sawayama, Takashi Usui, Akihiro Kawano, Hiroaki Naruse, Sho Suzuki, Takehito Okabe, Masatsugu Itahashi, Daisuke Uki
  • Patent number: 8334167
    Abstract: A method of manufacturing a photoelectric conversion device having a semiconductor substrate, comprises a first step of forming an insulating film on the semiconductor substrate, a second step of forming first holes in the insulating film, a third step of forming, in the insulating film, second holes shallower than the first holes, a fourth step of forming electrically conductive portions by embedding an electrically conductive material in the first holes, and forming planarization assisting portions by embedding the electrically conductive material in the second holes, and a fifth step of polishing the electrically conductive portions, the insulating film, and the planarization assisting portions until the planarization assisting portions are removed, thereby planarizing upper surfaces of the electrically conductive portions and the insulating film.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: December 18, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiro Kawano
  • Publication number: 20120154658
    Abstract: An image sensor includes a charge accumulation region of a first conductivity type, an isolating semiconductor region formed from an impurity semiconductor region of a second conductivity type, a channel stop region formed from an impurity semiconductor region of the second conductivity type which is located on the isolating semiconductor region, and an insulator arranged on the channel stop region. The insulator includes a first insulating portion arranged above the isolating semiconductor region via the channel stop region, a second insulating portion arranged adjacent to an outside of the first insulating portion, wherein thickness of the second insulating potion decreases with an increase in distance from the first insulating portion, and a third insulating portion formed on the first insulating portion, wherein the third insulating portion has upper and side faces connecting the upper face to an upper face of the second insulating portion.
    Type: Application
    Filed: December 2, 2011
    Publication date: June 21, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Akihiro Kawano
  • Publication number: 20110318873
    Abstract: A method of manufacturing a photoelectric conversion device having a semiconductor substrate, comprises a first step of forming an insulating film on the semiconductor substrate, a second step of forming first holes in the insulating film, a third step of forming, in the insulating film, second holes shallower than the first holes, a fourth step of forming electrically conductive portions by embedding an electrically conductive material in the first holes, and forming planarization assisting portions by embedding the electrically conductive material in the second holes, and a fifth step of polishing the electrically conductive portions, the insulating film, and the planarization assisting portions until the planarization assisting portions are removed, thereby planarizing upper surfaces of the electrically conductive portions and the insulating film.
    Type: Application
    Filed: September 8, 2011
    Publication date: December 29, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Akihiro Kawano
  • Patent number: 8039293
    Abstract: A method of manufacturing a photoelectric conversion device having a semiconductor substrate, comprises a first step of forming an insulating film on the semiconductor substrate, a second step of forming first holes in the insulating film, a third step of forming, in the insulating film, second holes shallower than the first holes, a fourth step of forming electrically conductive portions by embedding an electrically conductive material in the first holes, and forming planarization assisting portions by embedding the electrically conductive material in the second holes, and a fifth step of polishing the electrically conductive portions, the insulating film, and the planarization assisting portions until the planarization assisting portions are removed, thereby planarizing upper surfaces of the electrically conductive portions and the insulating film.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: October 18, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiro Kawano