Patents by Inventor Tetsuro Yamamoto

Tetsuro Yamamoto 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: 20220229115
    Abstract: Provided are an information processing device, an information processing system, an information processing method, and a computer program capable of visually and easily grasping a state of an energy storage device.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 21, 2022
    Inventors: Wataru YAMAMOTO, Hitoshi MATSUSHIMA, Keita NAKAI, Tetsuro MATSUMOTO
  • Publication number: 20220114961
    Abstract: A pixel circuit driving method is a method for driving a pixel circuit that includes a drive transistor that supplies a current corresponding to a signal voltage supplied via a signal line, a write transistor connected between the signal line and a gate electrode of the drive transistor, and an organic EL element that emits light in accordance with the current. The pixel circuit driving method includes supplying a reference potential to the gate electrode of the drive transistor before a threshold correction preparation operation of making a gate-source voltage of the drive transistor higher than a threshold voltage of the drive transistor.
    Type: Application
    Filed: October 6, 2021
    Publication date: April 14, 2022
    Applicant: JOLED INC.
    Inventors: Tetsuro YAMAMOTO, Kenji KOKUDA, Hitoshi TSUGE, Teppei TANAKA
  • Patent number: 11270639
    Abstract: A pixel circuit configured to emit light based on an image signal includes: a light emitting element (organic EL element); a driver transistor configured to adjust current supplied to the light emitting element; and a write transistor connected between a signal line to which the image signal is applied and the driver transistor. The driver transistor includes: a gate electrode; a counter electrode disposed opposite the gate electrode; and a channel disposed between the gate electrode and the counter electrode. A potential applied to the counter electrode in a write period in which the write transistor conducts current in a state in which the image signal is applied to the signal line reduces a resistance value of the driver transistor to lower value than a potential applied to the counter electrode in an emission period of the light emitting element does.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: March 8, 2022
    Assignee: JOLED INC.
    Inventor: Tetsuro Yamamoto
  • Patent number: 11183119
    Abstract: A pixel circuit having a function of compensating for characteristic variation of an electro-optical element and threshold voltage variation of a transistor is formed from a reduced number of component elements. An input signal is sampled from a signal line so as to be held in a holding capacitor. The threshold voltage of the drive transistor is imparted to the holding capacitor in order to cancel an influence of the threshold voltage.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: November 23, 2021
    Assignee: Sony Group Corporation
    Inventors: Katsuhide Uchino, Junichi Yamashita, Tetsuro Yamamoto
  • Patent number: 11164521
    Abstract: A pixel circuit includes: a driver transistor that supplies a current dependent on a voltage supplied via a signal line; a write transistor connected between the signal line and a gate electrode of the driver transistor; a first organic EL element connected to one electrode of the driver transistor, the one electrode being one of a drain electrode and a source electrode of the driver transistor; a switching transistor connected to the one electrode of the driver transistor; and a second organic EL element connected to the one electrode of the driver transistor via the switching transistor. The pixel circuit performs mobility correction that corrects a mobility of the driver transistor. The switching transistor turns ON after a write operation that writes the voltage supplied via the signal line and turns OFF before an operation that performs the mobility correction of the driver transistor begins.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: November 2, 2021
    Assignee: JOLED INC.
    Inventor: Tetsuro Yamamoto
  • Publication number: 20210221879
    Abstract: The present invention is directed to providing a monoclonal antibody having high selectivity and affinity for AGEs, particularly, AGEs derived from glyceraldehyde or AGEs derived from glycolaldehyde, and an analysis method utilizing the same. Another object of the present invention is to provide methods for diagnosing, treating and preventing a disease using the monoclonal antibody.
    Type: Application
    Filed: August 30, 2019
    Publication date: July 22, 2021
    Inventors: Tetsuro YAMAMOTO, Shota TSUCHIDA, Tomoaki SHIGETA, Kazumi SASAMOTO, Mami CHIRIFU
  • Patent number: 11043181
    Abstract: A display unit includes a display panel that includes a plurality of pixels arranged in a matrix. Each of the pixels includes one of an optical modulator and a self-luminescent element, and one of an electrochromic element, an electrophoretic element, and an electrowetting element. Each of the pixels further includes a pixel circuit that is configured to selectively drive the one of the optical modulator and the self-luminescent element, and selectively drive the one of the electrochromic element, the electrophoretic element, and the electrowetting element.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: June 22, 2021
    Assignee: JOLED INC.
    Inventors: Jiro Yamada, Tetsuro Yamamoto
  • Publication number: 20210125555
    Abstract: A pixel circuit includes: a driver transistor that supplies a current dependent on a voltage supplied via a signal line; a write transistor connected between the signal line and a gate electrode of the driver transistor; a first organic EL element connected to one electrode of the driver transistor, the one electrode being one of a drain electrode and a source electrode of the driver transistor; a switching transistor connected to the one electrode of the driver transistor; and a second organic EL element connected to the one electrode of the driver transistor via the switching transistor. The pixel circuit performs mobility correction that corrects a mobility of the driver transistor. The switching transistor turns ON after a write operation that writes the voltage supplied via the signal line and turns OFF before an operation that performs the mobility correction of the driver transistor begins.
    Type: Application
    Filed: August 27, 2020
    Publication date: April 29, 2021
    Applicant: JOLED INC.
    Inventor: Tetsuro YAMAMOTO
  • Publication number: 20210125556
    Abstract: A pixel circuit configured to emit light based on an image signal includes: a light emitting element (organic EL element); a driver transistor configured to adjust current supplied to the light emitting element; and a write transistor connected between a signal line to which the image signal is applied and the driver transistor. The driver transistor includes: a gate electrode; a counter electrode disposed opposite the gate electrode; and a channel disposed between the gate electrode and the counter electrode. A potential applied to the counter electrode in a write period in which the write transistor conducts current in a state in which the image signal is applied to the signal line reduces a resistance value of the driver transistor to lower value than a potential applied to the counter electrode in an emission period of the light emitting element does.
    Type: Application
    Filed: August 28, 2020
    Publication date: April 29, 2021
    Applicant: JOLED INC.
    Inventor: Tetsuro YAMAMOTO
  • Publication number: 20210118364
    Abstract: A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes. The circuit includes a source of a TFT used as a drive transistor that is connected to an anode of a light emitting element, and a drain of the TFT is connected to a power source potential. A capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT used as a switching transistor.
    Type: Application
    Filed: December 29, 2020
    Publication date: April 22, 2021
    Applicant: Sony Corporation
    Inventors: Katsuhide UCHINO, Junichi YAMASHITA, Tetsuro YAMAMOTO
  • Patent number: 10950168
    Abstract: Disclosed herein is a display including: a pixel array part configured to include pixels that are arranged in a matrix and each have an electro-optical element, a write transistor for writing a video signal, a drive transistor for driving the electro-optical element based on the video signal written by the write transistor, and a holding capacitor connected between gate and source of the drive transistor, wherein the holding capacitor includes a first electrode, a second electrode disposed to face one surface of the first electrode for forming a first capacitor, and a third electrode disposed to face the other surface of the first electrode for forming a second capacitor, and the first capacitor and the second capacitor are connected in parallel to each other electrically.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 16, 2021
    Assignee: Sony Corporation
    Inventors: Hiroshi Sagawa, Katsuhide Uchino, Tetsuro Yamamoto
  • Patent number: 10885837
    Abstract: A display device includes: a plurality of light-emitting elements, each light-emitting element having a light-emitting unit and a driving circuit for driving the light-emitting unit. The driving circuit at least includes a drive transistor having source/drain regions, a channel forming region, and a gate electrode, a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and a capacitive unit. In the drive transistor, one of the source/drain regions is connected to the corresponding current supply line, the other region of the source/drain regions is connected to the light-emitting unit and connected to one end of the capacitive unit, and forms a second node, and the gate electrode is connected to the other region of the source/drain regions of the video signal write transistor and connected to the other end of the capacitive unit, and forms a first node.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: January 5, 2021
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Yusuke Onoyama, Tetsuo Minami, Naobumi Toyomura, Tetsuro Yamamoto, Katsuhide Uchino
  • Patent number: 10818242
    Abstract: A pixel circuit includes a driving transistor, a write transistor, a first switching transistor, a first storage capacitor, a second and third switching transistors, and a second storage capacitor. The driving transistor controls a current flowing in a light-emitting device. The write transistor controls application of a signal voltage to a source end of the driving transistor. The first switching transistor controls a gate voltage of the driving transistor during correction operation that allows a gate-source voltage of the driving transistor to come close to a threshold voltage of the driving transistor. The second switching and third switching transistors are provided, in series, at an electrically conductive path between the source end of the driving transistor and a first voltage line.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: October 27, 2020
    Assignee: JOLED INC.
    Inventor: Tetsuro Yamamoto
  • Patent number: 10803834
    Abstract: An EL display panel including: a pixel array section in which EL display elements whose light emission state is controlled by an active matrix driving system are arranged in a form of a matrix; a first writing control line driving section and a second writing control line driving section configured to drive each writing control line from both sides of the pixel array section; and a first power supply line driving section and a second power supply line driving section configured to drive a power supply line disposed along a direction of a horizontal line from both sides of the pixel array section, the first power supply line driving section and the second power supply line driving section being respectively arranged between the first writing control line driving section and the pixel array section and between the second writing control line driving section and the pixel array section.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: October 13, 2020
    Assignee: Sony Corporation
    Inventors: Tetsuro Yamamoto, Katsuhide Uchino, Masakazu Kato
  • Patent number: 10783822
    Abstract: A transfer circuit includes an input circuit, a reset circuit, an output circuit, and an output stabilizer circuit, and obtains an input signal at an input terminal, holds the input signal, and outputs the input signal from an output terminal as an output signal in synchronization with a clock signal. The output stabilizer circuit includes an inverter circuit and a transistor. The inverter circuit outputs from an output terminal an inverted signal having an inverted polarity of at least one of the input signal and the output signal. The transistor has a control signal end connected to the output terminal of the inverter circuit, a first main signal end connected to a power supply line of the output stabilizer circuit, and a second main signal end connected to the output terminal of the transfer circuit.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: September 22, 2020
    Assignee: JOLED INC.
    Inventor: Tetsuro Yamamoto
  • Patent number: 10770003
    Abstract: A transfer circuit includes an input circuit, a reset circuit, an output circuit, and an output stabilizer circuit, and obtains an input signal at an input terminal, holds the input signal, and outputs the input signal from an output terminal as an output signal in synchronization with a clock signal. The transfer circuit includes an inverter circuit that has an input terminal connected to at least one of the input and output terminals of the transfer circuit, and outputs, from an output terminal, an inverted signal having an inverted polarity of at least one of the input and output signals. The reset circuit includes a first transistor having a control signal end connected to the output terminal of the inverter circuit, the first transistor switching continuity and discontinuity of a signal path between one end of a first capacitor that holds the input signal and a first power supply.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: September 8, 2020
    Assignee: JOLED INC.
    Inventor: Tetsuro Yamamoto
  • Patent number: 10763073
    Abstract: An ion source is provided. The ion source includes a plasma generation container, an electron supply, an electromagnet and a shift means. The plasma generation container generates an ion beam to be extracted therefrom in an ion beam extraction direction. The electron supply supplies electrons into the plasma generation container. The electromagnet generates a magnetic field for capturing the electrons from the electron supply. The shift means shifts a center of the magnetic field in the ion beam extraction direction to change a rate of a desired type of ion to be contained in the ion beam.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: September 1, 2020
    Assignee: NISSIN ION EQUIPMENT CO., LTD.
    Inventor: Tetsuro Yamamoto
  • Patent number: 10749134
    Abstract: The pixels of an organic EL display panel each include an anode electrode layer, an organic layer, and a cathode electrode layer. Each of the organic layer and the cathode electrode layer is shared by the plurality of pixels. An organic EL element in each of the pixels includes an anode section, a cathode section, and a light emitting section. A conductor layer having a recess is provided in a region outside a region of the organic EL element in a view from a light exiting direction in which the organic EL element emits light. The recess includes a coated section that is covered with the organic layer and a conductor exposed section where the conductor layer is exposed. The cathode electrode layer is connected to part of the conductor exposed section.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: August 18, 2020
    Assignee: JOLED INC.
    Inventors: Tetsuro Yamamoto, Yasunobu Hiromasu
  • Patent number: 10727290
    Abstract: An active-matrix display device includes pixels arranged in a matrix, and each of the pixels includes subpixels that are arranged along an X direction and emit light of mutually different colors. Each of the subpixels includes a TFT element provided on a TFT substrate and an organic EL element provided on the TFT substrate. The organic EL element has an opening which is a region from which emitted light exits, and the TFT substrate includes a first layer and a second layer. When same-colored subpixels of two of the pixels adjacent in the X direction are seen in a plan view, the first layer has a portion arranged in line symmetry between the same-colored subpixels and the second layer is disposed at an identical position in the openings of the same-colored subpixels.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: July 28, 2020
    Assignee: JOLED INC.
    Inventor: Tetsuro Yamamoto
  • Patent number: RE48891
    Abstract: A display apparatus includes a pixel unit in which pixels are arranged in a matrix pattern; and a driving circuit for driving the pixel unit. Each of the pixels includes a signal level holding capacitor; a first transistor that is turned on/off in response to a writing signal and via which one end of the signal level holding capacitor is connected to a signal line; a second transistor having one end of the signal level holding capacitor connected to a gate thereof and the other end of the signal level holding capacitor connected to a source thereof; a current-driven self-light-emitting element whose cathode is held at a cathode potential and whose anode is connected to the source of the second transistor; a third transistor that is turned on/off in response to a driving pulse signal; and a fourth transistor that is turned on/off in response to a control signal.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: January 11, 2022
    Assignee: Sony Group Corporation
    Inventors: Katsuhide Uchino, Tetsuro Yamamoto, Junichi Yamashita