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: 20190172391
    Abstract: A display device including: a plurality of sub-pixels arranged in a matrix, each including an electro-optical element having a structure in which a display functional layer is sandwiched between an upper electrode and a lower electrode; and an auxiliary interconnect contact in a pixel area in which the plurality of sub-pixels are arranged in a matrix and electrically connecting the upper electrode to an auxiliary interconnect, wherein m (m is an integer equal to or larger than two) sub-pixels adjacent to each other along an arrangement direction of the sub-pixels are regarded as one group, and n (n is a natural number smaller than m) auxiliary interconnect contacts are formed for each group.
    Type: Application
    Filed: February 8, 2019
    Publication date: June 6, 2019
    Applicant: Sony Corporation
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Publication number: 20190172389
    Abstract: An electroluminescent display panel has pixel circuits for an active matrix driving system. At least one of the pixel circuits has a thin-film transistor in which a portion of a pattern of a metal wiring material above a channel layer of the thin-film transistor is disposed to shield the channel region of the thin-film transistor.
    Type: Application
    Filed: January 21, 2019
    Publication date: June 6, 2019
    Inventors: Junichi Yamashita, Tetsuro Yamamoto, Katsuhide Uchino
  • Publication number: 20190157365
    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: Application
    Filed: October 25, 2018
    Publication date: May 23, 2019
    Inventors: Takayuki Taneda, Tetsuro Yamamoto, Katsuhide Uchino
  • Publication number: 20190130829
    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: December 27, 2018
    Publication date: May 2, 2019
    Applicant: Sony Corporation
    Inventors: Katsuhide UCHINO, Junichi YAMASHITA, Tetsuro YAMAMOTO
  • Patent number: 10276102
    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: January 12, 2018
    Date of Patent: April 30, 2019
    Assignee: Sony Corporation
    Inventors: Katsuhide Uchino, Junichi Yamashita, Tetsuro Yamamoto
  • Patent number: 10276645
    Abstract: The present invention relates to an image display device and a method for repairing a short circuit failure. The present invention is applicable to, for example, an active matrix type image display device using an organic EL device, and a short circuit location between wiring patterns is able to be repaired. In a scanning line WSL or a signal line DTL, a bypass wiring pattern BP for bypassing a region where the signal line DTL and the scanning line WSL intersect with each other is provided. By using the bypass wiring pattern BP, a short circuit location between wiring patterns is repaired.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: April 30, 2019
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Takayuki Taneda, Katsuhide Uchino
  • Patent number: 10276814
    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: July 26, 2018
    Date of Patent: April 30, 2019
    Assignee: JOLED Inc.
    Inventors: Tetsuo Minami, Katsuhide Uchino
  • Publication number: 20190109183
    Abstract: A display device including a pixel array unit having a matrix of pixels each configured such that an anode electrode of an organic electroluminescent element is connected to a source electrode of a drive transistor, a gate electrode of the drive transistor is connected to a source or drain electrode of a writing transistor, and a storage capacitor is connected between the gate and source electrodes of the drive transistor, scanning lines and power supply lines for individual pixel rows, and signal lines for individual pixel columns. A video signal reference potential is supplied to the signal lines for a period during which a scanning signal is supplied to the scanning lines during driving of pixels in a preceding row. During threshold correction for the drive transistor in a current pixel, the video signal reference potential and a potential of the cathode electrode of the organic electroluminescent element are equal.
    Type: Application
    Filed: November 29, 2018
    Publication date: April 11, 2019
    Applicant: Sony Corporation
    Inventors: Yukihito Iida, Mitsuru Asano, Katsuhide Uchino
  • Patent number: 10242614
    Abstract: A display device including: a plurality of sub-pixels arranged in a matrix, each including an electro-optical element having a structure in which a display functional layer is sandwiched between an upper electrode and a lower electrode; and an auxiliary interconnect contact in a pixel area in which the plurality of sub-pixels are arranged in a matrix and electrically connecting the upper electrode to an auxiliary interconnect, wherein m (m is an integer equal to or larger than two) sub-pixels adjacent to each other along an arrangement direction of the sub-pixels are regarded as one group, and n (n is a natural number smaller than m) auxiliary interconnect contacts are formed for each group.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: March 26, 2019
    Assignee: SONY CORPORATION
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Publication number: 20190073959
    Abstract: A display device according to the present disclosure includes: a pixel array unit (30) in which pixel circuits (20A) are disposed in a matrix form, the pixel circuits each including a light emission unit (21), a write transistor (23) that writes a signal voltage (Vsig) of a video signal, a retention capacitor (24) that retains the signal voltage (Vsig) written by the write transistor (23), a drive transistor (22) that drives the light emission unit (21) on the basis of the signal voltage (Vsig) retained by the retention capacitor (24), and an auxiliary capacitor (25) of which one terminal is connected to a source node of the drive transistor (22); and a control unit (90) that provides a potential change to a source electrode of the drive transistor (22) by coupling through the auxiliary capacitor (25) to set an operation point of the drive transistor (22) as a cut-off region after the threshold value correction process.
    Type: Application
    Filed: November 1, 2018
    Publication date: March 7, 2019
    Inventors: Naobumi Toyomura, Katsuhide Uchino, Yuki Seo
  • Patent number: 10217405
    Abstract: An electroluminescent display panel has pixel circuits for an active matrix driving system. At least one of the pixel circuits has a thin-film transistor in which a portion of a pattern of a metal wiring material above a channel layer of the thin-film transistor is disposed to shield the channel region of the thin-film transistor.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: February 26, 2019
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Tetsuro Yamamoto, Katsuhide Uchino
  • Publication number: 20190057653
    Abstract: A display device includes: a pixel array unit with pixel circuits disposed in matrix form, the pixel circuit including a driving transistor, an electro-optic element, a storage capacitor, and a sampling transistor, with the electro-optic element emitting light by generating a driving current based on information stored in the storage capacitor at the driving transistor to be applied to the electro-optic element; and a control unit, of which the output stage includes a buffer transistor, to output a pulse signal for driving the pixel array unit from the buffer transistor; wherein the pixel array unit and the control unit are formed with long laser beam irradiation to be scanned in the vertical direction or horizontal direction; and wherein with the control unit, the size of the buffer transistor is equal to or greater than the pixel pitch in the scanning direction of the laser beam.
    Type: Application
    Filed: October 19, 2018
    Publication date: February 21, 2019
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Publication number: 20190058023
    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: Application
    Filed: October 17, 2018
    Publication date: February 21, 2019
    Inventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
  • Patent number: 10170533
    Abstract: A display device including a pixel array unit having a matrix of pixels each configured such that an anode electrode of an organic electroluminescent element is connected to a source electrode of a drive transistor, a gate electrode of the drive transistor is connected to a source or drain electrode of a writing transistor, and a storage capacitor is connected between the gate and source electrodes of the drive transistor, scanning lines and power supply lines for individual pixel rows, and signal lines for individual pixel columns. A video signal reference potential is supplied to the signal lines for a period during which a scanning signal is supplied to the scanning lines during driving of pixels in a preceding row. During threshold correction for the drive transistor in a current pixel, the video signal reference potential and a potential of the cathode electrode of the organic electroluminescent element are equal.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: January 1, 2019
    Assignee: SONY CORPORATION
    Inventors: Yukihito Iida, Mitsuru Asano, Katsuhide Uchino
  • Patent number: 10170041
    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: Grant
    Filed: February 5, 2018
    Date of Patent: January 1, 2019
    Assignee: Sony Corporation
    Inventors: Katsuhide Uchino, Junichi Yamashita, Tetsuro Yamamoto
  • Patent number: 10147355
    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: Grant
    Filed: October 27, 2016
    Date of Patent: December 4, 2018
    Assignee: Sony Corporation
    Inventors: Tetsuo Minami, Yukihito Iida, Katsuhide Uchino
  • Publication number: 20180342204
    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: Application
    Filed: August 3, 2018
    Publication date: November 29, 2018
    Inventors: Tetsuo Minami, Katsuhide Uchino
  • Patent number: 10140924
    Abstract: A display device according to the present disclosure includes: a pixel array unit (30) in which pixel circuits (20A) are disposed in a matrix form, the pixel circuits each including a light emission unit (21), a write transistor (23) that writes a signal voltage (Vsig) of a video signal, a retention capacitor (24) that retains the signal voltage (Vsig) written by the write transistor (23), a drive transistor (22) that drives the light emission unit (21) on the basis of the signal voltage (Vsig) retained by the retention capacitor (24), and an auxiliary capacitor (25) of which one terminal is connected to a source node of the drive transistor (22); and a control unit (90) that provides a potential change to a source electrode of the drive transistor (22) by coupling through the auxiliary capacitor (25) to set an operation point of the drive transistor (22) as a cut-off region after the threshold value correction process.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: November 27, 2018
    Assignee: Sony Corporation
    Inventors: Naobumi Toyomura, Katsuhide Uchino, Yuki Seo
  • Patent number: 10141388
    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: Grant
    Filed: February 15, 2018
    Date of Patent: November 27, 2018
    Assignee: SONY CORPORATION
    Inventors: Tetsuro Yamamoto, Katsuhide Uchino
  • Patent number: 10134331
    Abstract: A display device includes: a pixel array unit with pixel circuits disposed in matrix form, the pixel circuit including a driving transistor, an electro-optic element, a storage capacitor, and a sampling transistor, with the electro-optic element emitting light by generating a driving current based on information stored in the storage capacitor at the driving transistor to be applied to the electro-optic element; and a control unit, of which the output stage includes a buffer transistor, to output a pulse signal for driving the pixel array unit from the buffer transistor; wherein the pixel array unit and the control unit are formed with long laser beam irradiation to be scanned in the vertical direction or horizontal direction; and wherein with the control unit, the size of the buffer transistor is equal to or greater than the pixel pitch in the scanning direction of the laser beam.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: November 20, 2018
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Katsuhide Uchino