Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-06-26
2010-10-12
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S082000, C345S087000, C345S092000
Reexamination Certificate
active
07812796
ABSTRACT:
A pixel circuit includes a first transistor transmitting a reference signal or a data signal in response to a selection signal applied through a scan line, second and third transistors inputting a reference current in response to a control signal applied through a control line, a first capacitor storing a voltage compensated by the input reference current to compensate for the data signal received from the first transistor, a second capacitor storing the compensated data signal by the first capacitor, a fourth transistor receiving the compensated data signal to generate a driving current, a fifth transistor transmitting the driving current in response to the control signal applied through the control line, and an organic light emitting diode receiving the driving current from the fifth transistor to emit light.
REFERENCES:
patent: 7259735 (2007-08-01), Kasai
patent: 7573441 (2009-08-01), Kwon
patent: 7688292 (2010-03-01), Park et al.
patent: 2007/0200793 (2007-08-01), Kwon
patent: 1691116 (2005-11-01), None
patent: 2004-246204 (2004-09-01), None
Office Action issued in corresponding Chinese Patent Application No. 200710108913.5; issued Mar. 6, 2009.
Brinks Hofer Gilson & Lione
Hjerpe Richard
LG. Display Co. Ltd.
Said Mansour M
LandOfFree
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