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).

  • Publication number: 20140209882
    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: March 31, 2014
    Publication date: July 31, 2014
    Applicant: Sony Corporation
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Patent number: 8780020
    Abstract: A self-luminous display device includes: pixel circuits; and a drive signal generating circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, and the drive signal generating circuit generates the drive signal containing a second level signal adapted to stop the light emission without reverse-biasing the light-emitting diode, a first level signal, lower than the second level signal, adapted to reverse-bias the light-emitting diode, and a third level signal, higher than the second level signal, adapted to enable the light-emitting diode to emit light, the drive signal generating circuit supplying the drive signal to the pixel circuits.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: July 15, 2014
    Assignee: Sony Corporation
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Patent number: 8730135
    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: Grant
    Filed: November 2, 2011
    Date of Patent: May 20, 2014
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Yutaka Mitomi, Mitsuru Asano, Tetsuo Minami, Takao Tanikame, Katsuhide Uchino
  • Publication number: 20140132648
    Abstract: In the present invention, there is provided a display panel driving method of the type wherein the total light emitting period length within a one-field period is controlled to variably control the peak luminance level of a display panel, including the step of: variably controlling, where the one-field period has N light emitting periods, N being equal to or greater than 2, the end timing of the ith light emitting period and the start timing of the i+1th light emitting period so as to satisfy the total light emitting period length within the one-field period, i being an odd number which satisfies 1?i?N?1 while i+1 satisfies 2?i+1?N.
    Type: Application
    Filed: January 23, 2014
    Publication date: May 15, 2014
    Applicant: Sony Corporation
    Inventor: Mitsuru Asano
  • Patent number: 8723416
    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: November 15, 2013
    Date of Patent: May 13, 2014
    Assignee: Sony Corporation
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Patent number: 8674910
    Abstract: In the present invention, there is provided a display panel driving method of the type wherein the total light emitting period length within a one-field period is controlled to variably control the peak luminance level of a display panel, including the step of: variably controlling, where the one-field period has N light emitting periods, N being equal to or greater than 2, the end timing of the ith light emitting period and the start timing of the i+1th light emitting period so as to satisfy the total light emitting period length within the one-field period, i being an odd number which satisfies 1?i?N?1 while i+1 satisfies 2?i+1?N.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: March 18, 2014
    Assignee: Sony Corporation
    Inventor: Mitsuru Asano
  • Publication number: 20140071031
    Abstract: A self-luminous display device includes: pixel circuits; and a drive signal generating circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, and the drive signal generating circuit generates the drive signal containing a second level signal adapted to stop the light emission without reverse-biasing the light-emitting diode, a first level signal, lower than the second level signal, adapted to reverse-bias the light-emitting diode, and a third level signal, higher than the second level signal, adapted to enable the light-emitting diode to emit light, the drive signal generating circuit supplying the drive signal to the pixel circuits.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: SONY CORPORATION
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Publication number: 20140070694
    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: November 15, 2013
    Publication date: March 13, 2014
    Applicant: SONY CORPORATION
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Patent number: 8669922
    Abstract: An image display panel includes: a lower substrate; self-light emitting elements for image display that are arranged on the lower substrate in a matrix shape and form an image display unit; a self-light emitting element for monitoring that is arranged on the lower substrate and emits monitoring light for the image display unit; and an upper substrate that holds the self-light emitting elements for image display and the self-light emitting element for monitoring in conjunction with the lower substrate, wherein the self-light emitting elements for image display emit emission light to the lower substrate side or the upper substrate side, and the self-light emitting element for monitoring emits the monitoring light to at least the upper substrate side or the lower substrate side.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: March 11, 2014
    Assignee: Sony Corporation
    Inventor: Mitsuru Asano
  • Patent number: 8653532
    Abstract: Disclosed herein is a display device, including: a substrate; a circuit part configured to include a drive element; a planarization insulating layer; an electrically-conductive layer including a plurality of first electrodes and an auxiliary interconnect; an aperture-defining insulating layer configured to insulate the plurality of first electrodes from each other and have an aperture through which part of the first electrode is exposed; a plurality of light emitting elements; and a separator configured to be formed by removing the planarization insulating layer at a position between a display area, in which the plurality of light emitting elements connected to the drive element are disposed, and a peripheral area which is surrounding the display area. A method of manufacturing a display device is also provided.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: February 18, 2014
    Assignee: Sony Corporation
    Inventors: Akiko Tsuji, Toshiki Matsumoto, Hirofumi Fujioka, Mitsuru Asano, Hiroshi Sagawa, Kiwamu Miura
  • Patent number: 8643572
    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 29, 2012
    Date of Patent: February 4, 2014
    Assignee: Sony Corporation
    Inventor: Mitsuru Asano
  • Patent number: 8610348
    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: April 30, 2013
    Date of Patent: December 17, 2013
    Assignee: Sony Corporation
    Inventors: Masatsugu Tomida, Mitsuru Asano
  • Publication number: 20130320847
    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: June 25, 2013
    Publication date: December 5, 2013
    Applicant: SONY CORPORATION
    Inventors: Yukihito Iida, Mitsuru Asano, Katsuhide Uchino
  • Publication number: 20130315627
    Abstract: A slit nozzle is moved by a nozzle lifting/lowering mechanism and a nozzle sliding mechanism relative to substrates held in a substantially horizontal attitude by spin chucks. A development liquid is discharged on each substrate from a discharge port of the slit nozzle such that development processing for the substrate is performed. After the development liquid is discharged, the slit nozzle is moved to a waiting position excluding positions over the substrates held by the spin chucks. In waiting pods provided at the waiting positions, cleaning processing for the slit nozzle is performed by a cleaning liquid with gas bubbles mixed therein.
    Type: Application
    Filed: May 16, 2013
    Publication date: November 28, 2013
    Inventors: Minoru SUGIYAMA, Mitsuru ASANO, Fumiya OKAZAKI
  • Patent number: 8570245
    Abstract: A display device includes 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: December 7, 2009
    Date of Patent: October 29, 2013
    Assignee: Sony Corporation
    Inventors: Yukihito Iida, Mitsuru Asano, Katsuhide Uchino
  • Publication number: 20130264557
    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: June 6, 2013
    Publication date: October 10, 2013
    Inventor: Mitsuru Asano
  • Publication number: 20130264950
    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 15, 2013
    Publication date: October 10, 2013
    Inventor: Mitsuru Asano
  • Publication number: 20130249385
    Abstract: A display device including: a substrate with a display area having a plurality of organic EL devices and a peripheral area having a driving circuit for the organic EL devices and surrounding the display area on the substrate; an organic insulating film covering at least the driving circuit; and a groove in the organic insulating film along a line between the display area and the peripheral area, an inorganic but not an not the organic insulating film being present in an outermost portion of the peripheral area spaced apart from the groove.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 26, 2013
    Applicant: SONY CORPORATION
    Inventors: HIROSHI FUJIMURA, MASUMITSU INO, MITSURU ASANO, AKIRA YUMOTO, YUICHI IWASE
  • Publication number: 20130241906
    Abstract: Disclosed herein is a display apparatus, including, a pixel array section including a plurality of pixel circuits arrayed in rows and columns of a matrix and each including a light emitting portion, a plurality of signal lines disposed individually for the pixel columns of the matrix array of the pixel circuits and connected to the pixel circuits belonging to the pixel columns, and a selector circuit for distributing display signals given thereto in a time series from an input signal line time-divisionally to the signal lines, the pixel array section has, in regard to any of combinations of those two signal lines which are individually connected to the pixel circuits which belong to those two pixel columns which neighbor with each other, a first wiring region, and a second wiring region.
    Type: Application
    Filed: April 8, 2013
    Publication date: September 19, 2013
    Applicant: SONY CORPORATION
    Inventor: Mitsuru Asano
  • Patent number: RE44914
    Abstract: The present invention provides a display device including a pixel array unit, a first power supply line, and a second power supply line. The pixel array unit is formed by two-dimensionally arranging pixel circuits each including an electrooptic element determining display luminance and a driving circuit for driving the electrooptic element in a form of a matrix. The first power supply line is for supplying a first power supply potential to the pixel circuits. The first power supply line is arranged along a direction of pixel arrangement of a pixel column in the pixel array unit. The second power supply line is for supplying a second power supply potential to the pixel circuits. The second power supply line isw arranged along the direction of the pixel arrangement of the pixel column in the pixel array unit.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: May 27, 2014
    Assignee: Sony Corporation
    Inventors: Mitsuru Asano, Seiichiro Jinta, Hiroshi Fujimura, Masatsugu Tomida