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Arokia Nathan, Peyman Servati, Kapil Sakariya, Anil Kumar: Pixel current driver for organic light emitting diode displays. Ignis Innovation, Pearne & Gordon, August 19, 2008: US07414600 (160 worldwide citation)

A pixel current driver comprises a plurality of thin film transistors (TFTs) each having dual gates and for driving OLED layers. A top gate of the dual gates is formed between a source and a drain of each of the thin film transistors, to thereby minimize parasitic capacitance. The top gate is ground ...


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Arokia Nathan, Gholamreza Reza Chaji, Peyman Servati: Method and system for programming, calibrating and driving a light emitting device display. Ignis Innovation, Pearne & Gordon, November 17, 2009: US07619597 (159 worldwide citation)

A method and system for programming, calibrating and driving a light emitting device display is provided. The system may include extracting a time dependent parameter of a pixel for calibration.


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Nathan Arokia, Chaji Gholamreza Reza, Servati Peyman: Method and system for programming, calibrating and driving a light emitting device display. Ignis Innovation, Nathan Arokia, Chaji Gholamreza Reza, Servati Peyman, HARRIS John D, June 22, 2006: WO/2006/063448 (156 worldwide citation)

A method and system for programming, calibrating and driving a light emitting device display is provided. The system may include extracting a time dependent parameter of a pixel for calibration.


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Arokia Nathan, Peyman Servati, Kapil Sakariya, Anil Kumar: Pixel driver circuit and pixel circuit having the pixel driver circuit. Ignis Innovation, Pearne & Gordon, August 4, 2009: US07569849 (147 worldwide citation)

A pixel driver circuit for driving a light-emitting element and a pixel circuit having the pixel driver circuit are provided. The pixel driver circuit includes a data line, address lines, switch thin film transistors, feedback thin film transistors and drive thin film transistors. The pixel circuit ...


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Arokia Nathan, Peyman Servati, Karim S Karim: Organic light emitting diode display having shield electrodes. Ignis Innovation, Pearne & Gordon, July 24, 2007: US07248236 (144 worldwide citation)

An organic light emitting diode (OLED) display includes at least one shield electrode between a cathode layer and an OLED drive circuit. The OLED drive circuit has at least one thin-film transistor (TFT), and the shield electrode is disposed to correspond to the thin-film transistor and closer to th ...


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Arokia Nathan, Rick Huang, Stefan Alexander: Voltage-programming scheme for current-driven AMOLED displays. Ignis Innovation, Nixon Peabody, February 14, 2012: US08115707 (116 worldwide citation)

A system and method for driving an AMOLED display is provided. The AMOLED display includes a plurality of pixel circuits. A voltage-programming scheme, a current-programming scheme or a combination thereof is applied to drive the display. Threshold shift information, and/or voltage necessary to obta ...


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Nathan Arokia, Chaji Reza G: Method and system for driving an active matrix display circuit. Ignis Innovation, Nathan Arokia, Chaji Reza G, HARRIS John D, July 19, 2007: WO/2007/079572 (115 worldwide citation)

A method and system for driving an active matrix display is provided. The system includes a drive circuit for a pixel having a light emitting device. The drive circuit includes a drive transistor for driving the light emitting device. The system includes a mechanism for adjusting the gate voltage of ...


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Nathan Arokia, Sakariya Kapil V, Servati Peyman, Jafarabadiashtiani Shahin: Pixel driver circuit. Ignis Innovation, Nathan Arokia, Sakariya Kapil V, Servati Peyman, Jafarabadiashtiani Shahin, HARRIS John D, March 31, 2005: WO/2005/029455 (113 worldwide citation)

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 driv ...


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Nathan Arokia, Chaji Reza G, Peyman Servati: System and driving method for active matrix light emitting device display. Ignis Innovation, Nathan Arokia, Chaji Reza G, Peyman Servati, HARRIS John, May 26, 2006: WO/2006/053424 (113 worldwide citation)

Active matrix light emitting device display and its driving technique is provided. The pixel includes a light emitting device and a plurality of transistors. A capacitor may be used to store a voltage applied to a driving transistor so that a current through the light emitting device is independent ...