Patents by Inventor Shahin Jafarabadiashtiani

Shahin Jafarabadiashtiani 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: 10089929
    Abstract: A pixel circuit for use in a display comprising a plurality of pixels is provided. The load-balanced current mirror pixel circuit can compensate for device degradation and/or mismatch, and changing environmental factors like temperature and mechanical strain. The pixel circuit comprises a pixel drive circuit comprising, switching circuitry, a current mirror having a reference transistor and a drive transistor, the reference transistor and the drive transistor each having a first and second node and a gate, the gate of the reference transistor being connected to the gate of the drive transistor; and a capacitor connected between the gate of the reference transistor and a ground potential, and a load connected between the current mirror and a ground potential, the load having a first load element and a second load element, the first load element being connected to the first node of the reference transistor and the second load element being connected to the first node of the drive transistor.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: October 2, 2018
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
  • Patent number: 10019941
    Abstract: A method and system for compensation for luminance degradation in electro-luminance devices is provided. The system includes a pixel circuit having a light emitting device, a storage capacitor, a plurality of transistors, and control signal lines to operate the pixel circuit. The storage capacitor is connected or disconnected to the transistor and a signal line(s) when programming and driving the pixel circuit.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: July 10, 2018
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Gholamreza Chaji, Shahin Jafarabadiashtiani
  • Patent number: 9852689
    Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: December 26, 2017
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
  • Publication number: 20170004769
    Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.
    Type: Application
    Filed: September 15, 2016
    Publication date: January 5, 2017
    Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
  • Publication number: 20160379565
    Abstract: A pixel circuit for use in a display comprising a plurality of pixels is provided. The load-balanced current mirror pixel circuit can compensate for device degradation and/or mismatch, and changing environmental factors like temperature and mechanical strain. The pixel circuit comprises a pixel drive circuit comprising, switching circuitry, a current mirror having a reference transistor and a drive transistor, the reference transistor and the drive transistor each having a first and second node and a gate, the gate of the reference transistor being connected to the gate of the drive transistor; and a capacitor connected between the gate of the reference transistor and a ground potential, and a load connected between the current mirror and a ground potential, the load having a first load element and a second load element, the first load element being connected to the first node of the reference transistor and the second load element being connected to the first node of the drive transistor.
    Type: Application
    Filed: September 8, 2016
    Publication date: December 29, 2016
    Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
  • Patent number: 9472139
    Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: October 18, 2016
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
  • Patent number: 9472138
    Abstract: A pixel circuit for use in a display comprising a plurality of pixels is provided. The load-balanced current mirror pixel circuit can compensate for device degradation and/or mismatch, and changing environmental factors like temperature and mechanical strain. The pixel circuit comprises a pixel drive circuit comprising, switching circuitry, a current mirror having a reference transistor and a drive transistor, the reference transistor and the drive transistor each having a first and second node and a gate, the gate of the reference transistor being connected to the gate of the drive transistor; and a capacitor connected between the gate of the reference transistor and a ground potential, and a load connected between the current mirror and a ground potential, the load having a first load element and a second load element, the first load element being connected to the first node of the reference transistor and the second load element being connected to the first node of the drive transistor.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: October 18, 2016
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
  • Publication number: 20150097874
    Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.
    Type: Application
    Filed: December 12, 2014
    Publication date: April 9, 2015
    Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
  • Patent number: 8941697
    Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: January 27, 2015
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
  • Publication number: 20140232623
    Abstract: A method and system for compensation for luminance degradation in electro-luminance devices is provided. The system includes a pixel circuit having a light emitting device, a storage capacitor, a plurality of transistors, and control signal lines to operate the pixel circuit. The storage capacitor is connected or disconnected to the transistor and a signal line(s) when programming and driving the pixel circuit.
    Type: Application
    Filed: May 1, 2014
    Publication date: August 21, 2014
    Applicant: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Gholamreza Chaji, Shahin Jafarabadiashtiani
  • Patent number: 8749595
    Abstract: A method and system for compensation for luminance degradation in electro-luminance devices is provided. The system includes a pixel circuit having a light emitting device, a storage capacitor, a plurality of transistors, and control signal lines to operate the pixel circuit. The storage capacitor is connected or disconnected to the transistor and a signal line(s) when programming and driving the pixel circuit.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: June 10, 2014
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Gholamreza Chaji, Shahin Jafarabadiashtiani
  • Publication number: 20140028738
    Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.
    Type: Application
    Filed: October 4, 2013
    Publication date: January 30, 2014
    Applicant: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
  • Publication number: 20130334979
    Abstract: A pixel circuit for use in a display comprising a plurality of pixels is provided. The load-balanced current mirror pixel circuit can compensate for device degradation and/or mismatch, and changing environmental factors like temperature and mechanical strain. The pixel circuit comprises a pixel drive circuit comprising, switching circuitry, a current mirror having a reference transistor and a drive transistor, the reference transistor and the drive transistor each having a first and second node and a gate, the gate of the reference transistor being connected to the gate of the drive transistor; and a capacitor connected between the gate of the reference transistor and a ground potential, and a load connected between the current mirror and a ground potential, the load having a first load element and a second load element, the first load element being connected to the first node of the reference transistor and the second load element being connected to the first node of the drive transistor.
    Type: Application
    Filed: July 2, 2013
    Publication date: December 19, 2013
    Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
  • Patent number: 8553018
    Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: October 8, 2013
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
  • Patent number: 8502751
    Abstract: A pixel circuit for use in a display comprising a plurality of pixels is provided. The load-balanced current mirror pixel circuit can compensate for device degradation and/or mismatch, and changing environmental factors like temperature and mechanical strain. The pixel circuit comprises a pixel drive circuit comprising, switching circuitry, a current mirror having a reference transistor and a drive transistor, the reference transistor and the drive transistor each having a first and second node and a gate, the gate of the reference transistor being connected to the gate of the drive transistor; and a capacitor connected between the gate of the reference transistor and a ground potential, and a load connected between the current mirror and a ground potential, the load having a first load element and a second load element, the first load element being connected to the first node of the reference transistor and the second load element being connected to the first node of the drive transistor.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: August 6, 2013
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
  • Patent number: 8223177
    Abstract: A method and system for driving a pixel circuit in an active matrix display is provided. The system implements a feedback driving scheme to enhance programming speed of the pixel circuit. The system includes a column driver for driving the pixel circuit with feedback. A controller controls a signal on a programming signal line during a programming cycle. For example, the driver may include a model for reducing the settling time of a pixel current. During the programming mode, an accelerating pulse may be provided to accelerate the programming of the pixel circuit.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: July 17, 2012
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Shahin Jafarabadiashtiani, G. Reza Chaji
  • Patent number: 8188946
    Abstract: A method and system for compensation for luminance degradation in electro-luminance devices is provided. The system includes a pixel circuit having a light emitting device, a storage capacitor, a plurality of transistors, and control signal lines to operate the pixel circuit. The storage capacitor is connected or disconnected to the transistor and a signal line(s) when programming and driving the pixel circuit.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: May 29, 2012
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, G. Reza Chaji, Shahin Jafarabadiashtiani
  • Publication number: 20110248980
    Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.
    Type: Application
    Filed: May 23, 2011
    Publication date: October 13, 2011
    Applicant: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
  • Patent number: 7978187
    Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: July 12, 2011
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
  • Publication number: 20110141160
    Abstract: A method and system for compensation for luminance degradation in electro-luminance devices is provided. The system includes a pixel circuit having a light emitting device, a storage capacitor, a plurality of transistors, and control signal lines to operate the pixel circuit. The storage capacitor is connected or disconnected to the transistor and a signal line(s) when programming and driving the pixel circuit.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 16, 2011
    Applicant: Ignis Innovation Inc.
    Inventors: Arokia Nathan, G. Reza Chaji, Shahin Jafarabadiashtiani