Patents by Inventor Kunihiko Iizuka

Kunihiko Iizuka 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: 11325072
    Abstract: An object trapping device enables efficiently trapping a plurality of objects in a specific combination. Each of a first electrode pair (13), a second electrode pair (14), and a third electrode pair (15) in an electrode pair group (3) is applied with an individual AC voltage and traps an object by dielectrophoresis generated in accordance with the AC voltage that is applied.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: May 10, 2022
    Assignees: SHARP KABUSHIKI KAISHA, The University of Tokyo
    Inventors: Kunihiko Iizuka, Takeshi Mitsunaka, Yoshihisa Fujimoto, Teruo Fujii, Soo-Hyeon Kim
  • Patent number: 11327002
    Abstract: A size reduction in an optical system that detects a fluorescent photon is achieved. A photon detection operation of a photon detection unit (21) is controlled on the basis of timing of an irradiation operation of an excitation light source (50), and after excitation light emitted to a microfluidic channel (10) is switched off, a fluorescent photon generated by a target flowing in the microfluidic channel (10) is detected.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: May 10, 2022
    Assignees: SHARP KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO
    Inventors: Kunihiko Iizuka, Yoshihisa Fujimoto, Takeshi Mitsunaka, Teruo Fujii, Soo-Hyeon Kim
  • Patent number: 11158658
    Abstract: [Object] To achieve a radiation detector capable of suppressing variation in the amount of radiation detected. [Solution] A first gate electrode (52) is connected to a light receiving device, and a second gate electrode (53) is configured to have the same potential as that of the first gate electrode (52).
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: October 26, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Shiota, Shigenari Taguchi, Takahiro Shindoh, Kunihiko Iizuka, Nobuyuki Ashida
  • Patent number: 11146222
    Abstract: The circuit area of an amplifier provided in a photon-counting radiation detector is decreased compared with the related art. A pulse amplification measurement circuit includes: an inverting amplification circuit that inverts and amplifies an input signal to generate an inverted amplified output; a feedback transistor that connects an input unit and an output unit of the inverting amplification circuit to each other; and a pulse measurement circuit that generates an output signal corresponding to the number of pulses of the inverted amplified output. The pulse measurement circuit is capable of supplying the output signal toward the feedback transistor.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: October 12, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takahiro Shindoh, Kunihiko Iizuka, Shigenari Taguchi
  • Patent number: 11067535
    Abstract: Provided are a fluorescent testing system, a dielectrophoresis device, and a molecular testing method that measure only fluorescence emitted from a test object without separating excitation light and the fluorescence by an optical filter and that are able to prevent reduction of an application range of a type of the fluorescence.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: July 20, 2021
    Assignees: SHARP KABUSHIKI KAISHA, The University of Tokyo
    Inventors: Kunihiko Iizuka, Yoshihisa Fujimoto, Takeshi Mitsunaka, Soo-Hyeon Kim, Teruo Fujii
  • Patent number: 10996198
    Abstract: An integrated circuit sensor that enables, regardless of a type of an inspection object, the inspection object and a front surface of the integrated circuit sensor to be in reliable contact with each other in a large region is provided. A through silicon via (11) that electrically connects an inside of an integrated circuit sensor (4) and an outside of the integrated circuit sensor (4) is formed in the inside of the integrated circuit sensor (4) so as to reach a rear surface of the integrated circuit sensor (4), which faces the front surface of the integrated circuit sensor (4).
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: May 4, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kunihiko Iizuka, Akira Saito, Takeshi Mitsunaka, Nobuyuki Ashida
  • Publication number: 20210101115
    Abstract: An object trapping device enables efficiently trapping a plurality of objects in a specific combination. Each of a first electrode pair (13), a second electrode pair (14), and a third electrode pair (15) in an electrode pair group (3) is applied with an individual AC voltage and traps an object by dielectrophoresis generated in accordance with the AC voltage that is applied.
    Type: Application
    Filed: March 23, 2018
    Publication date: April 8, 2021
    Applicants: SHARP KABUSHIKI KAISHA, The University of Tokyo
    Inventors: KUNIHIKO IIZUKA, TAKESHI MITSUNAKA, YOSHIHISA FUJIMOTO, TERUO FUJII, SOO-HYEON KIM
  • Patent number: 10890528
    Abstract: Provided are a fluorescent testing system, a molecular testing method, and a fluorescent testing method that can avoid enlargement and complication. A fluorescent testing system (1) includes: an excitation light source (23) that radiates excitation light (L1) to protein to which a fluorescent probe is added; a silicon integrated circuit (10) including a photon detection unit (13) that detects light by a photodiode (12); a holding layer (30) including a microwell (31) that is provided above the photodiode (12) and holds the protein to which the fluorescent probe is added; and a control unit (24) that causes the excitation light source (23) to radiate the excitation light (L1) to the protein which. is held and to which the fluorescent probe is added and causes the photon detection unit (13), after extinguishment of the excitation light (L1), to detect fluorescence emitted from the protein to which the fluorescent probe is added.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: January 12, 2021
    Assignees: SHARP KABUSHIKI KAISHA, The University of Tokyo
    Inventors: Kunihiko Iizuka, Yoshihisa Fujimoto, Soo-Hyeon Kim, Teruo Fujii
  • Patent number: 10886314
    Abstract: [Object] To achieve a high-sensitivity radiation detector. [Solution] An amplifying transistor (3) is configured such that a photodiode (1) receives light with the amplifying transistor (3) conductive.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: January 5, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Shiota, Shigenari Taguchi, Takahiro Shindoh, Kunihiko Iizuka, Nobuyuki Ashida
  • Patent number: 10866332
    Abstract: An imaging system includes an input voltage setting unit that applies an input voltage to an Amp transistor, a setting output value acquisition unit that acquires a corresponding output for each pixel, and a calibration characteristic deriving unit that derives an input-output characteristic indicating a correspondence relationship between the input voltage and the output and derives a calibration characteristic to be used for calibration based on an inverse characteristic of the input-output characteristic.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: December 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shigenari Taguchi, Seiichi Hama, Nobuyuki Ashida, Kunihiko Iizuka, Takahiro Shindoh, Isao Nakamura
  • Patent number: 10838080
    Abstract: A radiographic image capturing apparatus includes a substrate in which pixels are arranged in a matrix, the pixels each including a sensor element for generating an electrical signal corresponding to a dose of an incident radiation, a read transistor for outputting the electrical signal, and a reset transistor for performing initialization, and a shift register that outputs a control signal for sequentially selecting pixels of each row, in which a control signal used to control read transistors in pixels of a row and a control signal used to control reset transistors in pixels of another row are identical.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: November 17, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Kunihiko Iizuka
  • Patent number: 10718730
    Abstract: A change in an imaginary part of a complex dielectric constant of an inspection object containing moisture is detected as a change in an oscillation frequency. A sensor device includes an oscillation unit that is formed in a semiconductor integrated circuit and an oscillation frequency detection unit that detects an oscillation frequency of the oscillation unit. The oscillation unit has capacitors that are connected to an inspection object in series and changes the oscillation frequency in accordance with a complex dielectric constant of the inspection object.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: July 21, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Nobuyuki Ashida, Kunihiko Iizuka, Akira Saito, Takeshi Mitsunaka
  • Publication number: 20200213552
    Abstract: [Object] To reduce 1/f noise by utilizing the functionality of controlling row selection, with which a typical solid-state imaging element is provided. [Solution] A solid-state imaging element (1A) includes a pixel array (A) in which a plurality of columns of pixels (P) are arranged, a row selection unit (13) that specifies a readout row of the pixel array (A), and a control device (30) that sweeps information carried by each pixel (P) a plurality of times by controlling the row selection unit (13) and outputs an output value in accordance with results of a plurality of readouts of the information obtained from each pixel (P) by the sweeping.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Inventors: NOBUYUKI ASHIDA, KUNIHIKO IIZUKA, SHIGENARI TAGUCHI, MASAHIRO SHIOTA
  • Patent number: 10690611
    Abstract: A sensor device (30) includes an oscillation unit formed in a semiconductor integrated circuit (40) and having an oscillation frequency which changes in accordance with a physical property of an analyte which comes into contact with the oscillation unit; an oscillation frequency detection unit configured to detect the oscillation frequency, and one or more electrode pairs (36) configured to move a specific analyte dispersed in liquid to an arbitrary location.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 23, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Akira Saito, Daiki Sato, Takeshi Mitsunaka, Kunihiko Iizuka
  • Publication number: 20200177141
    Abstract: The circuit area of an amplifier provided in a photon-counting radiation detector is decreased compared with the related art. A pulse amplification measurement circuit includes: an inverting amplification circuit that inverts and amplifies an input signal to generate an inverted amplified output; a feedback transistor that connects an input unit and an output unit of the inverting amplification circuit to each other; and a pulse measurement circuit that generates an output signal corresponding to the number of pulses of the inverted amplified output. The pulse measurement circuit is capable of supplying the output signal toward the feedback transistor.
    Type: Application
    Filed: March 19, 2018
    Publication date: June 4, 2020
    Inventors: TAKAHIRO SHINDOH, KUNIHIKO IIZUKA, SHIGENARI TAGUCHI
  • Publication number: 20200158620
    Abstract: A size reduction in an optical system that detects a fluorescent photon is achieved. A photon detection operation of a photon detection unit (21) is controlled on the basis of timing of an irradiation operation of an excitation light source (50), and after excitation light emitted to a microfluidic channel (10) is switched off, a fluorescent photon generated by a target flowing in the microfluidic channel (10) is detected.
    Type: Application
    Filed: June 5, 2018
    Publication date: May 21, 2020
    Applicants: SHARP KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO, THE UNIVERSITY OF TOKYO
    Inventors: KUNIHIKO IIZUKA, YOSHIHISA FUJIMOTO, TAKESHI MITSUNAKA, TERUO FUJII, SOO-HYEON KIM
  • Patent number: 10578574
    Abstract: Provided is a technology for detecting a change in an inspection target containing moisture. A sensor circuit (1) for inspecting property of an inspection target includes an oscillator (20) having a resonance frequency of 30 to 200 GHz, and a detection circuit (3) that estimates an oscillation frequency of the oscillator.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: March 3, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Mitsunaka, Akira Saito, Nobuyuki Ashida, Kunihiko Iizuka
  • Patent number: 10571422
    Abstract: To detect changes in the physical properties of an examination object as changes in a plurality of different oscillation frequencies using signals with the oscillation frequencies, a sensor circuit includes: an oscillation circuit (1) with a first resonant frequency; an oscillation circuit (2) with a second resonant frequency different from the first resonant frequency; and a detection circuit (4) that detects oscillation frequencies of the oscillation circuit (1) and the oscillation circuit (2).
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: February 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Mitsunaka, Kunihiko Iizuka, Akira Saito, Nobuyuki Ashida
  • Publication number: 20200016608
    Abstract: A particle sorting apparatus a channel that includes a trunk channel formed along a specific upper surface and deflection electrode pairs that sort a non-target minute particle and a target minute particle respectively in a direction substantially perpendicular to the specific upper surface and a direction along the specific upper surface by dielectrophoresis.
    Type: Application
    Filed: July 5, 2019
    Publication date: January 16, 2020
    Inventors: KUNIHIKO IIZUKA, TAKESHI MITSUNAKA, DAIKI SATO, TERUO FUJII, SOO-HYEON KIM
  • Publication number: 20200014863
    Abstract: [Object] To realize an image capturing apparatus capable of suppressing noise in an image. [Solution] An image capturing apparatus (100) includes a plurality of pixels (110) arranged in a matrix form. Each pixel includes a switching element (112) configured to control outputting of a charge accumulated in a sensor element (111). Pixels in each column are grouped into blocks (120). Each block includes a block switching element (122) configured to control outputting.
    Type: Application
    Filed: July 3, 2019
    Publication date: January 9, 2020
    Inventors: MASAHIRO SHIOTA, SHIGENARI TAGUCHI, KUNIHIKO IIZUKA, NOBUYUKI ASHIDA