Patents by Inventor Yutaka Mitomi

Yutaka Mitomi 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: 20220171058
    Abstract: To detect damage, peeling and the like of a diffusion plate accurately. A light source module according to an embodiment includes a light source (121), a case (125) that houses the light source and includes an emission opening through which light emitted from the light source is emitted, a cover member (125) that is disposed at the emission opening of the case and through which the light emitted from the light source is transmitted, a wave guide (126, 127) that guides a part of the light, which is emitted from the light source, in a direction that is different from the traveling direction of the light emitted from the light source, a detection unit (131) that detects the quantity of the light guided via the wave guide, and a driving unit (120) that drives the light source based on the quantity of the light detected by the detection unit.
    Type: Application
    Filed: February 28, 2020
    Publication date: June 2, 2022
    Inventor: YUTAKA MITOMI
  • Patent number: 11114029
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: September 7, 2021
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Publication number: 20200402456
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 24, 2020
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Patent number: 10706777
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: July 7, 2020
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Publication number: 20190172393
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Application
    Filed: February 6, 2019
    Publication date: June 6, 2019
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Patent number: 10229638
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: March 12, 2019
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Patent number: 9984621
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: May 29, 2018
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Publication number: 20180096651
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Application
    Filed: November 21, 2017
    Publication date: April 5, 2018
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Patent number: 9818340
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: November 14, 2017
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Patent number: 9548027
    Abstract: Disclosed herein is a display apparatus, including: a pixel array section including a plurality of pixels, a writing transistor, a driving transistor, a first switching transistor, a holding capacitor, and a second switching transistor; a first scanning section configured to drive the writing transistor in a unit of a row of the pixels; a second scanning section configured to drive the switching transistors in synchronism with scanning by the first scanning section; and a third scanning section configured to control the second switching transistors to a non-conducting state within a period after the image signal is written by the writing transistor until the signal writing period of the same row of the pixels ends but to a conducting state within any other period.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: January 17, 2017
    Assignee: Sony Corporation
    Inventors: Yutaka Mitomi, Masatsugu Tomida, Katsuhide Uchino
  • Patent number: 9460654
    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: April 4, 2014
    Date of Patent: October 4, 2016
    Assignee: JOLED Inc.
    Inventors: Yukihito Iida, Yutaka Mitomi, Mitsuru Asano, Tetsuo Minami, Takao Tanikame, Katsuhide Uchino
  • Publication number: 20160217738
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Application
    Filed: April 6, 2016
    Publication date: July 28, 2016
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Publication number: 20160125805
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Publication number: 20160049117
    Abstract: Disclosed herein is a display apparatus, including: a pixel array section including a plurality of pixels, a writing transistor, a driving transistor, a first switching transistor, a holding capacitor, and a second switching transistor; a first scanning section configured to drive the writing transistor in a unit of a row of the pixels; a second scanning section configured to drive the switching transistors in synchronism with scanning by the first scanning section; and a third scanning section configured to control the second switching transistors to a non-conducting state within a period after the image signal is written by the writing transistor until the signal writing period of the same row of the pixels ends but to a conducting state within any other period.
    Type: Application
    Filed: June 18, 2015
    Publication date: February 18, 2016
    Inventors: Yutaka Mitomi, Masatsugu Tomida, Katsuhide Uchino
  • Patent number: 9165501
    Abstract: Disclosed herein is a display apparatus, including: a pixel array section including a plurality of pixels, a writing transistor, a driving transistor, a first switching transistor, a holding capacitor, and a second switching transistor; a first scanning section configured to drive the writing transistor in a unit of a row of the pixels; a second scanning section configured to drive the switching transistors in synchronism with scanning by the first scanning section; and a third scanning section configured to control the second switching transistors to a non-conducting state within a period after the image signal is written by the writing transistor until the signal writing period of the same row of the pixels ends but to a conducting state within any other period.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: October 20, 2015
    Assignee: Sony Corporation
    Inventors: Yutaka Mitomi, Masatsugu Tomida, Katsuhide Uchino
  • Patent number: 9013372
    Abstract: Disclosed herein is a display apparatus, including: a pixel array section including a plurality of pixels, a writing transistor, a driving transistor, a first switching transistor, a holding capacitor, and a second switching transistor; a first scanning section configured to drive the writing transistor in a unit of a row of the pixels; a second scanning section configured to drive the switching transistors in synchronism with scanning by the first scanning section; and a third scanning section configured to control the second switching transistors to a non-conducting state within a period after the image signal is written by the writing transistor until the signal writing period of the same row of the pixels ends but to a conducting state within any other period.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: April 21, 2015
    Assignee: Sony Corporation
    Inventors: Yutaka Mitomi, Masatsugu Tomida, Katsuhide Uchino
  • Publication number: 20140347406
    Abstract: Disclosed herein is a display apparatus, including: a pixel array section including a plurality of pixels, a writing transistor, a driving transistor, a first switching transistor, a holding capacitor, and a second switching transistor; a first scanning section configured to drive the writing transistor in a unit of a row of the pixels; a second scanning section configured to drive the switching transistors in synchronism with scanning by the first scanning section; and a third scanning section configured to control the second switching transistors to a non-conducting state within a period after the image signal is written by the writing transistor until the signal writing period of the same row of the pixels ends but to a conducting state within any other period.
    Type: Application
    Filed: August 12, 2014
    Publication date: November 27, 2014
    Applicant: Sony Corporation
    Inventors: Yutaka Mitomi, Masatsugu Tomida, Katsuhide Uchino
  • 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: 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
  • Patent number: 8659522
    Abstract: In a display apparatus, as shown in FIG. 1, by using a reference signal, a shift register and a logical operation circuit generate a driving signal in periods for correcting a threshold voltage based on a rectangular wave signal. Also by using the reference signal, a write signal in a mobility correcting period is generated by an inverter, a NAND circuit, a level conversion circuit, a buffer circuit, a driving power generating unit, and a low-pass filter including a resistor and a capacitor. The signals are separately generated and are selectively output. Thus, excessive or insufficient mobility correction based on emission brightness can be prevented.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: February 25, 2014
    Assignee: Sony Corporation
    Inventors: Yutaka Mitomi, Yukihito Iida, Takao Tanikame, Katsuhide Uchino