21
Nathan Arokia, Chaji G Reza: High aperture ratio pixel layout for display device. Ignis Innovation, Nathan Arokia, Chaji G Reza, HARRIS John D, May 7, 2009: WO/2009/055920 (86 worldwide citation)

A display device, pixel layout and method of forming the same is provided. The display device includes: a plurality of pixels formed in a pixel array area; and a power supply grid for distributing power to the pixels. Each pixel has a light emitting device and a plurality of transistors. The power s ...


22
Nathan Arokia, Jafarabadiashtiani Shahin, Chaji G Reza: Methode et systeme pour attaquer un circuit de pixels dans un afficheur a matrice active, Method and system for driving a pixel circuit in an active matrix display. Ignis Innovation, Ignis Innovation, GOWLING LAFLEUR HENDERSON, April 29, 2008: CA2550102 (85 worldwide citation)

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 ...


23
Nathan Arokia, Chaji Reza G: Driving circuit for current programmed organic light-emitting diode displays. Ignis Innovation, Nathan Arokia, Chaji Reza G, HARRIS John D, August 17, 2006: WO/2006/084360 (82 worldwide citation)

A load driving circuit for a load having a parasitic capacitance associated therewith is provided. The load being current programmed. The driving circuit has a data line having a voltage controlling the load, a feedback loop having a lowpass filter for monitoring the voltage of the data line; and a ...


24
Nathan Arokia, Chaji Reza G: Driving circuit for current programmed organic light-emitting diode displays. Ignis Innovation, November 14, 2007: EP1854338-A1 (73 worldwide citation)

Methods and apparatus for driving current programmed light-emitting diode (OLED) displays with high parasitic capacitance through the monitoring the voltage of the data current line, and feeding the monitoring information back to a voltage controlled current line through a differentiator.


25
CHAJI GHOLAMREZA: System and methods for aging compensation in amoled displays. IGNIS INNOVATION, June 3, 2011: WO/2011/064761 (61 worldwide citation)

Methods and systems to provide baseline measurements for aging compensation for a display device are disclosed. An example display system has a plurality of active pixels and a reference pixel. Common input signals are provided to the reference pixel and the plurality of active pixels. The outputs o ...


26
CHAJI GHOLAMREZA: High resolution pixel architecture. IGNIS INNOVATION, June 9, 2011: WO/2011/067729 (59 worldwide citation)

A high resolution pixel using organic light emitting devices (OLEDs) in a staggered arrangement to increase aperture ratio is disclosed. The arrangement may be used with both bottom and top emission type pixels. The arrangement includes a first organic light emitting device emitting light of a first ...


27
CHAJI Gholamreza, SUN LAI Jackson Chi, AZIZI Yaser, MA Maran Ran: SYSTÈME ET PROCÉDÉ DE PROGRAMMATION DE COMPENSATION RAPIDE DE PIXELS DANS UN ÉCRAN DAFFICHAGE, SYSTEM AND METHOD FOR FAST COMPENSATION PROGRAMMING OF PIXELS IN A DISPLAY. IGNIS INNOVATION, CHAJI Gholamreza, SUN LAI Jackson Chi, AZIZI Yaser, MA Maran Ran, December 6, 2012: WO/2012/164474 (57 worldwide citation)

Circuits for programming a circuit with decreased programming time are provided. Such circuits include a storage device such as a capacitor for storing display information and for ensuring a driving device such as a driving transistor drives a light emitting device according to the display informati ...


28
CHAJI Gholamreza, AZIZI Yaser: SYSTÈME ET PROCÉDÉS POUR LEXTRACTION DE PARAMÈTRES DE SEUIL ET DE MOBILITÉ DANS DES AFFICHEURS AMOLED, SYSTEM AND METHODS FOR EXTRACTION OF THRESHOLD AND MOBILITY PARAMETERS IN AMOLED DISPLAYS. IGNIS INNOVATION, CHAJI Gholamreza, AZIZI Yaser, November 29, 2012: WO/2012/160471 (56 worldwide citation)

Disclosed is a system and method to improve the extraction of transistor and OLED parameters in an AMOLED display for compensation of programming voltages to improve image quality. A pixel circuit includes an organic light emitting device, a drive device to provide a programmable drive current to th ...


29
JAFFARI Javid, CHAJI Gholamreza, HEIDARI Abdorreza: SYSTÈME DINFORMATIONS EN RETOUR ADAPTATIF DE COMPENSATION DE VIEILLISSEMENT DE ZONES DE PIXELS AVEC UNE VITESSE DESTIMATION AMÉLIORÉE, ADAPTIVE FEEDBACK SYSTEM FOR COMPENSATING FOR AGING PIXEL AREAS WITH ENHANCED ESTIMATION SPEED. IGNIS INNOVATION, JAFFARI Javid, CHAJI Gholamreza, HEIDARI Abdorreza, November 29, 2012: WO/2012/160424 (55 worldwide citation)

A local priority-based scanning scheme that focuses scanning to areas of a display panel whose measured characteristics are under continuous change (e.g., aging or relaxation). The algorithm identifies areas or regions needing compensation, using a current measurement from a single pixel in an area ...


30
CHAJI Gholamreza: SYSTÈMES ET PROCÉDÉS DE COMPENSATION DU VIEILLISSEMENT DANS DES ÉCRANS AMOLED, SYSTEMS AND METHODS FOR AGING COMPENSATION IN AMOLED DISPLAYS. IGNIS INNOVATION, CHAJI Gholamreza, December 6, 2012: WO/2012/164475 (54 worldwide citation)

Circuits for programming, monitoring, and driving pixels in a display are provided. Circuits generally include a driving transistor to drive current through a light emitting device according to programming information which is stored on a storage device, such as a capacitor. One or more switching tr ...