Patents by Inventor Mitsuru Asano

Mitsuru Asano 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: 9299287
    Abstract: A self-luminous display device includes: pixel circuits; and a drive circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current channel of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, the drive circuit applies a light emission enabling bias to the light-emitting diode after correcting the drive transistor and writing a data voltage to the control node, provides, during a light emission enabled period in which the light emission enabling bias is applied, a light emission interruption period adapted to change the light emission enabling bias to a non-light emission bias with the data voltage held by the holding capacitor, and performs a light emission disabling process, adapted to reverse-bias the light-emitting diode to stop the light emission, for a constant period after the light emission enabled period.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: March 29, 2016
    Assignee: JOLED Inc.
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Patent number: 9293086
    Abstract: A display apparatus disclosed herein includes a plurality of pixel circuits each having a plurality of switches configured to receive a driving signal of a predetermined period and be controlled for opening and closing operation by the driving signal; and a drive circuit configured to control the open/closed state of the switches; the drive circuit being operable to scan the pixel circuits and open and close the switches in periods independent of each other.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: March 22, 2016
    Assignee: JOLED Inc.
    Inventors: Mitsuru Asano, Takao Tanikame
  • Publication number: 20160055810
    Abstract: A display device having at least a plurality of pixel circuits, connected to signal lines to which data signals in accordance with luminance information are supplied, arranged in a matrix, wherein pixel circuits of odd number columns and even number columns adjacent sandwiching an axis in a column direction parallel to an arrangement direction of the signal lines have a mirror type circuit arrangement symmetric about the axis of the column direction, and there are lines different from the signal lines between signal lines of adjacent pixel circuits.
    Type: Application
    Filed: November 4, 2015
    Publication date: February 25, 2016
    Inventor: Mitsuru Asano
  • Patent number: 9262967
    Abstract: A display apparatus disclosed herein includes a plurality of pixel circuits, each having a plurality of switches configured to receive a driving signal of a predetermined period and to be controlled for opening and closing operation by the driving signal, a drive circuit configured to control the open/closed state of the switches, being operable to scan the pixel circuits and open and close the switches in periods independent of each other.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: February 16, 2016
    Assignee: JOLED Inc.
    Inventors: Mitsuru Asano, Takao Tanikame
  • Patent number: 9257073
    Abstract: A display panel driving method for controlling the total light emitting period length within a one-field period includes placing a first light emission period, a second light emission period, and a third light emission period within the one-field period, and adjusting, in a state in which a period length from a starting timing of the first light emission period to an ending timing of the third light emission period is at least 25% and at most 75% of a one-field period length, a first no-light emission period between the first light emission period and the second light emission period and a second no-light emission period between the second light emission period and the third light emission period.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: February 9, 2016
    Assignee: JOLED Inc.
    Inventor: Mitsuru Asano
  • Publication number: 20150349043
    Abstract: Disclosed herein is an electroluminescence display panel including a pixel circuit, a signal line, a scan line, a drive power supply line, a common power supply line, a power supply line drive circuit, a high-potential power supply line, and a low-potential power supply line.
    Type: Application
    Filed: August 13, 2015
    Publication date: December 3, 2015
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Patent number: 9202424
    Abstract: A display device having at least a plurality of pixel circuits, connected to signal lines to which data signals in accordance with luminance information are supplied, arranged in a matrix, wherein pixel circuits of odd number columns and even number columns adjacent sandwiching an axis in a column direction parallel to an arrangement direction of the signal lines have a mirror type circuit arrangement symmetric about the axis of the column direction, and there are lines different from the signal lines between signal lines of adjacent pixel circuits.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: December 1, 2015
    Assignee: Sony Corporation
    Inventor: Mitsuru Asano
  • Patent number: 9202857
    Abstract: A display device in which pixels each including an emission area are arranged in a form of a matrix, the display device including: a first electrode formed from the emission area of the pixels to a non-emission area on a periphery of the emission area; a second electrode formed so as to be common to the pixels; and a light emitting material layer formed between the first electrode and the second electrode; wherein film thickness in the non-emission area of at least one of the first electrode and the second electrode is larger than film thickness in the emission area.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: December 1, 2015
    Assignee: Sony Corporation
    Inventor: Mitsuru Asano
  • Publication number: 20150340421
    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 30, 2015
    Publication date: November 26, 2015
    Inventors: Takayuki Taneda, Katsuhide Uchino, Yukihito Iida, Mitsuru Asano
  • Publication number: 20150311270
    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: July 2, 2015
    Publication date: October 29, 2015
    Inventors: Yukihito Iida, Mitsuru Asano, Katsuhide Uchino
  • Publication number: 20150279910
    Abstract: A self-light emitting display unit capable of improving manufacturing yield is provided. Sizes of color pixel circuits corresponding to pixels for R, G, and B are respectively set unevenly within a pixel circuit according to a magnitude ratio of drive currents which allow color self-light emitting elements in the pixel to emit with a same light emission luminance. Thereby, the pattern densities of color pixel circuits respectively corresponding to the pixels for R, G, and B become even to each other, and the pattern defect rate as the whole pixel circuit is decreased.
    Type: Application
    Filed: April 20, 2015
    Publication date: October 1, 2015
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Patent number: 9135856
    Abstract: Disclosed herein is an electroluminescence display panel including a pixel circuit, a signal line, a scan line, a drive power supply line, a common power supply line, a power supply line drive circuit, a high-potential power supply line, and a low-potential power supply line.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: September 15, 2015
    Assignee: Sony Corporation
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Patent number: 9136285
    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: June 25, 2013
    Date of Patent: September 15, 2015
    Assignee: SONY CORPORATION
    Inventors: Yukihito Iida, Mitsuru Asano, Katsuhide Uchino
  • Patent number: 9136314
    Abstract: A method for manufacturing an organic electroluminescence display including multilayer structures that are each formed in a respective one of pixel areas in an effective area of a substrate and are each formed by a lower electrode, an organic layer, and an upper electrode, the organic electroluminescence display having a common electrode that electrically connects the pixel areas, the method including the steps of: forming a protective electrode and an outer-peripheral electrode that are electrically connected to the common electrode; forming the multilayer structures; and carrying out film deposition treatment involving electrification of the substrate.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: September 15, 2015
    Assignee: JOLED INC.
    Inventors: Hiroshi Fujimura, Mitsuru Asano, Toshiaki Imai
  • Publication number: 20150243713
    Abstract: A method for manufacturing an organic electroluminescence display including multilayer structures that are each formed in a respective one of pixel areas in an effective area of a substrate and are each formed by a lower electrode, an organic layer, and an upper electrode, the organic electroluminescence display having a common electrode that electrically connects the pixel areas, the method including the steps of: forming a protective electrode and an outer-peripheral electrode that are electrically connected to the common electrode; forming the multilayer structures; and carrying out film deposition treatment involving electrification of the substrate.
    Type: Application
    Filed: May 14, 2015
    Publication date: August 27, 2015
    Inventors: Hiroshi Fujimura, Mitsuru Asano, Toshiaki Imai
  • Publication number: 20150228233
    Abstract: A display device having at least a plurality of pixel circuits, connected to signal lines to which data signals in accordance with luminance information are supplied, arranged in a matrix, wherein pixel circuits of odd number columns and even number columns adjacent sandwiching an axis in a column direction parallel to an arrangement direction of the signal lines have a mirror type circuit arrangement symmetric about the axis of the column direction, and there are lines different from the signal lines between signal lines of adjacent pixel circuits.
    Type: Application
    Filed: February 20, 2015
    Publication date: August 13, 2015
    Inventor: Mitsuru Asano
  • Publication number: 20150145757
    Abstract: A display panel driving method for controlling the total light emitting period length within a one-field period includes placing a first light emission period, a second light emission period, and a third light emission period within the one-field period, and adjusting, in a state in which a period length from a starting timing of the first light emission period to an ending timing of the third light emission period is at least 25% and at most 75% of a one-field period length, a first no-light emission period between the first light emission period and the second light emission period and a second no-light emission period between the second light emission period and the third light emission period.
    Type: Application
    Filed: December 8, 2014
    Publication date: May 28, 2015
    Inventor: Mitsuru Asano
  • Patent number: 9041281
    Abstract: A self-light emitting display unit capable of improving manufacturing yield is provided. Sizes of color pixel circuits corresponding to pixels for R, G, and B are respectively set unevenly within a pixel circuit according to a magnitude ratio of drive currents which allow color self-light emitting elements in the pixel to emit with a same light emission luminance. Thereby, the pattern densities of color pixel circuits respectively corresponding to the pixels for R, G, and B become even to each other, and the pattern defect rate as the whole pixel circuit is decreased.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: May 26, 2015
    Assignee: Sony Corporation
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Publication number: 20150102322
    Abstract: A display device in which pixels each including an emission area are arranged in a form of a matrix, the display device including: a first electrode formed from the emission area of the pixels to a non-emission area on a periphery of the emission area; a second electrode formed so as to be common to the pixels; and a light emitting material layer formed between the first electrode and the second electrode; wherein film thickness in the non-emission area of at least one of the first electrode and the second electrode is larger than film thickness in the emission area.
    Type: Application
    Filed: September 22, 2014
    Publication date: April 16, 2015
    Inventor: Mitsuru Asano
  • 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