Patents by Inventor Yukihito Iida

Yukihito Iida 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: 9135857
    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: February 2, 2015
    Date of Patent: September 15, 2015
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
  • Patent number: 9099041
    Abstract: A display device includes pixel array unit and a driver unit. A sampling transistor samples a signal potential to hold the signal potential in a holding capacitor. A driver transistor flows a drive current to a light emitting element in accordance with the signal potential held. A main scanner in the driver unit outputs the control signal having a shorter pulse width than the time period to the scan line to make the sampling transistor conductive during a time period while the signal line is at the signal potential, thereby adding the signal potential a correction for a mobility of the driver transistor when the signal potential is held in the holding capacitor.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: August 4, 2015
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Tetsuro Yamamoto, Katsuhide Uchino
  • Publication number: 20150213759
    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: February 2, 2015
    Publication date: July 30, 2015
    Inventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
  • Patent number: 9041627
    Abstract: A display apparatus including a pixel array and a driver configured to drive the pixel array, the pixel array having scanning lines as rows, signal lines as columns, a matrix of pixels disposed at respective intersections of the scanning lines and the signal lines, and power supply lines disposed along respective rows of the pixels, the driver having a main scanner for successively supplying control signals to the scanning lines to perform line-sequential scanning on the rows of the pixels, a power supply scanner for supplying a power supply voltage, which selectively switches between a first potential and a second potential, to the power supply lines in synchronism with the line-sequential scanning, and a signal selector for supplying a signal potential, which serves as a video signal, and a reference potential to the signal lines as the columns in synchronism with the line-sequential scanning.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: May 26, 2015
    Assignee: Sony Corporation
    Inventors: Katsuhide Uchino, Yukihito Iida
  • Publication number: 20150138052
    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: Application
    Filed: December 3, 2014
    Publication date: May 21, 2015
    Applicant: SONY CORPORATION
    Inventors: Yukihito Iida, Takayuki Taneda, Katsuhide Uchino
  • Publication number: 20150108459
    Abstract: Disclosed herein is a display apparatus has a pixel array section including: pixel circuits which are each provided with a driving transistor and an electro-optical device and are laid out to form a matrix; and a draw wire provided in each of the pixel circuits to serve as a wire connecting the driving transistor to a power-supply providing line, wherein the resistance of the draw wire is relatively large in the pixel circuit close to a source applying a power-supply voltage to the power-supply providing line.
    Type: Application
    Filed: November 13, 2014
    Publication date: April 23, 2015
    Inventors: Takayuki Taneda, Katsuhide Uchino, Yukihito Iida
  • Patent number: 8994623
    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. The drive wiring is formed on a first wiring layer and connected to the control terminal of the switching transistor. The data wiring is formed on a second wiring layer and connected to a first terminal of the switching transistor. A multi-layered wiring structure is used so that the second wiring layer is formed on a layer different from that on which the first wiring layer is formed.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: March 31, 2015
    Assignee: Sony Corporation
    Inventors: Tetsuo Minami, Yukihito Iida, Katsuhide Uchino
  • Publication number: 20150084030
    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. The drive wiring is formed on a first wiring layer and connected to the control terminal of the switching transistor. The data wiring is formed on a second wiring layer and connected to a first terminal of the switching transistor. A multi-layered wiring structure is used so that the second wiring layer is formed on a layer different from that on which the first wiring layer is formed.
    Type: Application
    Filed: December 1, 2014
    Publication date: March 26, 2015
    Inventors: Tetsuo Minami, Yukihito Iida, Katsuhide Uchino
  • Patent number: 8988330
    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: August 5, 2014
    Date of Patent: March 24, 2015
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Mitsuru Asano, Katsuhide Uchino
  • Publication number: 20150070342
    Abstract: A display panel including pixels disposed on a substrate, where each of the pixels includes a light emitting element, and a capacitor. The capacitor of a first one of the pixels is partially overlapped, in a vertical direction, by respective pixel areas of two of the pixels. The anode of the capacitor of the first one of the pixels may be disposed closer to the substrate than a cathode of the capacitor, thereby reducing a parasitic capacitance between the capacitor and an anode of the light emitting element of one of the two pixels overlapping the capacitor.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Inventors: Mitsuru Asano, Yukihito Iida
  • Patent number: 8976089
    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: July 31, 2014
    Date of Patent: March 10, 2015
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
  • Patent number: 8921865
    Abstract: A display panel including pixels disposed on a substrate, where each of the pixels includes a light emitting element, and a capacitor. The capacitor of a first one of the pixels is partially overlapped, in a vertical direction, by respective pixel areas of two of the pixels. The anode of the capacitor of the first one of the pixels may be disposed closer to the substrate than a cathode of the capacitor, thereby reducing a parasitic capacitance between the capacitor and an anode of the light emitting element of one of the two pixels overlapping the capacitor.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: December 30, 2014
    Assignee: Sony Corporation
    Inventors: Mitsuru Asano, Yukihito Iida
  • Patent number: 8913091
    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 25, 2009
    Date of Patent: December 16, 2014
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Takayuki Taneda, Katsuhide Uchino
  • Patent number: 8907874
    Abstract: Disclosed herein is a display apparatus has a pixel array section including: pixel circuits which are each provided with a driving transistor and an electro-optical device and are laid out to form a matrix; and a draw wire provided in each of the pixel circuits to serve as a wire connecting the driving transistor to a power-supply providing line, wherein the resistance of the draw wire is relatively large in the pixel circuit close to a source applying a power-supply voltage to the power-supply providing line.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: December 9, 2014
    Assignee: Sony Corporation
    Inventors: Takayuki Taneda, Katsuhide Uchino, Yukihito Iida
  • Publication number: 20140339534
    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: August 5, 2014
    Publication date: November 20, 2014
    Inventors: Yukihito Iida, Mitsuru Asano, Katsuhide Uchino
  • Publication number: 20140339531
    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: July 31, 2014
    Publication date: November 20, 2014
    Applicant: SONY CORPORATION
    Inventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
  • Publication number: 20140332797
    Abstract: An EL display panel having a pixel structure corresponding to an active-matrix drive system, the EL display panel including a current supply line configured to be connected to a plurality of pixel circuits in common, line width of an intersection part of the current supply line with a signal line being smaller than line width of the other part of the current supply line.
    Type: Application
    Filed: July 29, 2014
    Publication date: November 13, 2014
    Applicant: Sony Corporation
    Inventors: Takayuki Taneda, Katsuhide Uchino, Yukihito Iida, Mitsuru Asano
  • Publication number: 20140320548
    Abstract: A self-luminous display panel driving method for driving a self-luminous display panel of the active matrix driving type, includes the step of executing threshold value correction operation for a driving transistor divisionally in a plurality of periods within at least one of which, after a point of time of an end of a preceding correction period till a point of time of a start of a succeeding correction period, a potential to be applied to the drain electrode of the driving transistor is controlled to an intermediate potential between a first potential for lighting driving of the driving transistor and a second potential for initialization applied within a preparation period of the first one of the correction periods.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 30, 2014
    Applicant: SONY CORPORATION
    Inventors: Yukihito Iida, Yutaka Mitomi, Mitsuru Asano, Tetsuo Minami
  • Patent number: 8836617
    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: March 22, 2012
    Date of Patent: September 16, 2014
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Akitsuna Takagi, Katsuhide Uchino
  • Patent number: 8836690
    Abstract: Disclosed herein is a display apparatus including a pixel array section and a drive section. The pixel array section has power supply lines, scan lines arranged in row, signal lines arranged in column, and pixels arranged in matrix at intersections of each of the scan lines and each of the signal lines. The drive transistor is connected at one of a pair of current terminals to the light emitting device and at the other of the pair of current terminals to the power supply line. The drive section supplies a control signal to each scan line and a video signal to each signal line to drive each pixel, executing a threshold voltage correcting operation, a write operation, and a light emitting operation.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: September 16, 2014
    Assignee: Sony Corporation
    Inventors: Tetsuo Minami, Masatsugu Tomida, Yukihito Iida, Katsuhide Uchino