Patents by Inventor Katsuhide Uchino

Katsuhide Uchino 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: 20180331309
    Abstract: Disclosed herein is a display apparatus, including: a foldable substrate; a pixel array section including a plurality of pixels disposed on the substrate and each including an electro-optical device; the foldable substrate being folded at a substrate end portion at least on one side thereof around the pixel array section; a peripheral circuit section disposed on the substrate end portion and adapted to drive the pixels of the pixel array section; and a pad section provided on the substrate end portion on which the peripheral circuit section is provided and adapted to electrically connect the peripheral circuit section to the outside of the substrate.
    Type: Application
    Filed: July 26, 2018
    Publication date: November 15, 2018
    Inventors: Tetsuo Minami, Katsuhide Uchino
  • Patent number: 10121836
    Abstract: The display device including a pixel circuit has a first line, a transistor, a light emitting element, and a second line. The transistor is located between the second line and an electrode of the light emitting element. Either the first line or the second line is wired in a region that overlaps a light emitting region of the light emitting element in a lamination direction of layers. The second line intersects the first line outside of the light emitting region and overlaps a non-light emitting region of the light emitting element.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: November 6, 2018
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
  • Patent number: 10115779
    Abstract: A display unit with which lowering of long-term reliability of a transistor is decreased is provided. The display unit includes a display section having a plurality of organic EL devices with light emitting color different from each other and a plurality of pixel circuits that are singly provided for every said organic EL device for every pixel. The pixel circuit has a first transistor for writing a video signal, a second transistor for driving the organic EL device based on the video signal written by the first transistor, and a retentive capacity, and out of the first transistor and the second transistor, a third transistor provided correspondingly to a second organic EL device adjacent to a first organic EL device is arranged farther from the first organic EL device than a first retentive capacity provided correspondingly to the second organic EL device out of the retentive capacity.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: October 30, 2018
    Assignee: Sony Corporation
    Inventors: Takayuki Taneda, Tetsuro Yamamoto, Katsuhide Uchino
  • Publication number: 20180261153
    Abstract: A display device including: a pixel array section; power supply lines; and auxiliary electrodes, wherein each pixel has an auxiliary capacitance, and one of electrodes of the auxiliary capacitance is connected to the source electrode of the drive transistor, and another electrode is connected to the auxiliary electrode for the pixel.
    Type: Application
    Filed: April 19, 2018
    Publication date: September 13, 2018
    Inventors: Yukihito IIDA, Tetsuo MINAMI, Takao TANIKAME, Katsuhide UCHINO
  • Publication number: 20180261156
    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) a drive transistor having source/drain regions, a channel forming region, and a gate electrode, (B) a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and (C) a capacitive unit. In the drive transistor, (A-1) one of the source/drain regions is connected to the corresponding current supply line, (A-2) 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 (A-3) 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: Application
    Filed: April 30, 2018
    Publication date: September 13, 2018
    Applicant: Sony Corporation
    Inventors: Junichi YAMASHITA, Yusuke ONOYAMA, Tetsuo MINAMI, Naobumi TOYOMURA, Tetsuro YAMAMOTO, Katsuhide UCHINO
  • Patent number: 10074307
    Abstract: Disclosed herein is a display device in which light emitting elements of a plurality of colors including a light emitting element emitting blue light are formed in each pixel on a substrate on which a transistor is formed for each sub-pixel, and a plurality of pixels formed with sub-pixels of the plurality of colors as a unit are arranged in a form of a matrix, wherein relative positional relation between transistors of sub-pixels of respective light emission colors including blue light and a light emitting section of a light emitting element emitting the blue light is laid out such that distances between the transistors of the sub-pixels of the respective light emission colors including the blue light and the light emitting section of the light emitting element emitting the blue light are equal to each other for the respective colors.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: September 11, 2018
    Assignee: Sony Corporation
    Inventors: Tetsuo Minami, Katsuhide Uchino
  • Publication number: 20180254007
    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: May 4, 2018
    Publication date: September 6, 2018
    Applicant: Sony Corporation
    Inventors: Katsuhide UCHINO, Junichi YAMASHITA, Tetsuro YAMAMOTO
  • Publication number: 20180254005
    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: Application
    Filed: May 7, 2018
    Publication date: September 6, 2018
    Inventors: Hiroshi Sagawa, Katsuhide Uchino, Tetsuro Yamamoto
  • Patent number: 10069092
    Abstract: Disclosed herein is a display apparatus, including: a foldable substrate; a pixel array section including a plurality of pixels disposed on the substrate and each including an electro-optical device; the foldable substrate being folded at a substrate end portion at least on one side thereof around the pixel array section; a peripheral circuit section disposed on the substrate end portion and adapted to drive the pixels of the pixel array section; and a pad section provided on the substrate end portion on which the peripheral circuit section is provided and adapted to electrically connect the peripheral circuit section to the outside of the substrate.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: September 4, 2018
    Assignee: JOLED Inc.
    Inventors: Tetsuo Minami, Katsuhide Uchino
  • Publication number: 20180247594
    Abstract: A pixel circuit includes a switching transistor whose conduction is controlled by a drive signal supplied to the control terminal, a drive wiring adapted to propagate the drive signal, and a data wiring adapted to propagate a data signal. A multi-layered wiring structure is used so that a second wiring layer is formed on a layer different from that on which a first wiring layer is formed.
    Type: Application
    Filed: April 6, 2018
    Publication date: August 30, 2018
    Inventors: Tetsuo Minami, Yukihito Iida, Katsuhide Uchino
  • Publication number: 20180233112
    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: Application
    Filed: April 10, 2018
    Publication date: August 16, 2018
    Inventors: Tetsuro Yamamoto, Katsuhide Uchino, Masakazu Kato
  • Publication number: 20180204511
    Abstract: A display device is disclosed. The display device includes: a pixel array unit and a driving unit which drives the pixel array unit. The pixel array unit includes rows of first scanning lines and second scanning lines, columns of signals, pixels in a matrix state arranged at portions where the scanning lines and the signal lines cross each other and power supply lines and ground lines supplying power to respective pixels. The driving unit includes a first scanner performing line-sequential scanning to pixels by each row by supplying a first control signal to each first scanning line sequentially, a second scanner supplying a second control signal to each second scanning line sequentially so as to correspond to the line-sequential scanning and a signal selector supplying a video signal to rows of signal lines so as to correspond to the line-sequential scanning.
    Type: Application
    Filed: December 15, 2017
    Publication date: July 19, 2018
    Inventors: Junichi Yamashita, Takao Tanikame, Katsuhide Uchino
  • Publication number: 20180190746
    Abstract: A display device including a pixel array having a plurality of pixels arranged in a matrix form, each of the pixels including a sampling transistor configured to sample a data potential from a video signal line which is insulated from and intersects a control line in response to the change in potential of the control line, and a light-emitting element configured to emit light at the brightness commensurate with the magnitude of the post-sampling data potential.
    Type: Application
    Filed: February 15, 2018
    Publication date: July 5, 2018
    Applicant: Sony Corporation
    Inventors: Tetsuro Yamamoto, Katsuhide Uchino
  • Patent number: 10014355
    Abstract: The display device including a pixel circuit has a first line, a transistor, a light emitting element, and a second line. The transistor is located between the second line and an electrode of the light emitting element. Either the first line or the second line is wired in a region that overlaps a light emitting region of the light emitting element in a lamination direction of layers. The second line intersects the first line outside of the light emitting region and overlaps a non-light emitting region of the light emitting element.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: July 3, 2018
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
  • Patent number: 10002567
    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: September 9, 2016
    Date of Patent: June 19, 2018
    Assignee: Sony Corporation
    Inventors: Katsuhide Uchino, Junichi Yamashita, Tetsuro Yamamoto
  • Patent number: 9997587
    Abstract: The display device including a pixel circuit has a first line, a transistor, a light emitting element, and a second line. The transistor is located between the second line and an electrode of the light emitting element. Either the first line or the second line is wired in a region that overlaps a light emitting region of the light emitting element in a lamination direction of layers. The second line intersects the first line outside of the light emitting region and overlaps a non-light emitting region of the light emitting element.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: June 12, 2018
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
  • Publication number: 20180158412
    Abstract: A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a TFT serving as a drive transistor is connected to an anode of a light emitting element, a drain 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 serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts.
    Type: Application
    Filed: February 5, 2018
    Publication date: June 7, 2018
    Applicant: Sony Corporation
    Inventors: Katsuhide UCHINO, Junichi Yamashita, Tetsuro Yamamoto
  • Patent number: 9984625
    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: Grant
    Filed: October 31, 2017
    Date of Patent: May 29, 2018
    Assignee: SONY CORPORATION
    Inventors: Katsuhide Uchino, Junichi Yamashita, Tetsuro Yamamoto
  • Publication number: 20180137824
    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: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Inventors: Katsuhide Uchino, Junichi Yamashita, Tetsuro Yamamoto
  • Patent number: 9972282
    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: August 4, 2014
    Date of Patent: May 15, 2018
    Assignee: Sony Corporation
    Inventors: Tetsuro Yamamoto, Katsuhide Uchino, Masakazu Kato