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).
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Patent number: 10089929Abstract: 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: GrantFiled: September 8, 2016Date of Patent: October 2, 2018Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
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Patent number: 10019941Abstract: 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: GrantFiled: May 1, 2014Date of Patent: July 10, 2018Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Gholamreza Chaji, Shahin Jafarabadiashtiani
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Patent number: 9852689Abstract: 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: GrantFiled: September 15, 2016Date of Patent: December 26, 2017Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
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Publication number: 20170004769Abstract: 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: ApplicationFiled: September 15, 2016Publication date: January 5, 2017Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
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Publication number: 20160379565Abstract: 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: ApplicationFiled: September 8, 2016Publication date: December 29, 2016Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
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Patent number: 9472139Abstract: 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: GrantFiled: December 12, 2014Date of Patent: October 18, 2016Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
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Patent number: 9472138Abstract: 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: GrantFiled: July 2, 2013Date of Patent: October 18, 2016Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
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Publication number: 20150097874Abstract: 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: ApplicationFiled: December 12, 2014Publication date: April 9, 2015Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
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Patent number: 8941697Abstract: 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: GrantFiled: October 4, 2013Date of Patent: January 27, 2015Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
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Publication number: 20140232623Abstract: 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: ApplicationFiled: May 1, 2014Publication date: August 21, 2014Applicant: Ignis Innovation Inc.Inventors: Arokia Nathan, Gholamreza Chaji, Shahin Jafarabadiashtiani
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Patent number: 8749595Abstract: 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: GrantFiled: December 10, 2010Date of Patent: June 10, 2014Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Gholamreza Chaji, Shahin Jafarabadiashtiani
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Publication number: 20140028738Abstract: 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: ApplicationFiled: October 4, 2013Publication date: January 30, 2014Applicant: Ignis Innovation Inc.Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
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Publication number: 20130334979Abstract: 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: ApplicationFiled: July 2, 2013Publication date: December 19, 2013Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
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Patent number: 8553018Abstract: 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: GrantFiled: May 23, 2011Date of Patent: October 8, 2013Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
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Patent number: 8502751Abstract: 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: GrantFiled: September 23, 2004Date of Patent: August 6, 2013Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Kapil V. Sakariya, Peyman Servati, Shahin Jafarabadiashtiani
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Patent number: 8223177Abstract: 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: GrantFiled: July 6, 2006Date of Patent: July 17, 2012Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Shahin Jafarabadiashtiani, G. Reza Chaji
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Patent number: 8188946Abstract: 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: GrantFiled: September 12, 2006Date of Patent: May 29, 2012Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, G. Reza Chaji, Shahin Jafarabadiashtiani
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Publication number: 20110248980Abstract: 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: ApplicationFiled: May 23, 2011Publication date: October 13, 2011Applicant: Ignis Innovation Inc.Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
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Patent number: 7978187Abstract: 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: GrantFiled: July 23, 2004Date of Patent: July 12, 2011Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, Yuriy Vygranenko, Shahin Jafarabadiashtiani, Peyman Servati
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Publication number: 20110141160Abstract: 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: ApplicationFiled: December 10, 2010Publication date: June 16, 2011Applicant: Ignis Innovation Inc.Inventors: Arokia Nathan, G. Reza Chaji, Shahin Jafarabadiashtiani