Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2008-05-20
2008-05-20
Lefkowitz, Sumati (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S094000
Reexamination Certificate
active
07375707
ABSTRACT:
A gamma voltage compensating apparatus and method for a liquid crystal display wherein a gamma voltage is compensated to improve a charge characteristic of a pixel. In the apparatus, a pre-charge voltage generator generates a pre-charge voltage allowing a gamma voltage to be higher than a target voltage in a certain time interval every one horizontal period. A gamma voltage generator adds the pre-charge voltage from the pre-charge voltage generating means to a predetermined reference voltage in such a manner to have a different level in accordance with a voltage level of an image signal, thereby generating a gamma voltage. Accordingly, a gamma voltage including a pre-charge voltage higher than the target gamma voltage is applied to improve a charge characteristic of the pixel, thereby preventing a charged voltage difference from being generated between the horizontal and vertical pixels.
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Kumar Srilakshmi K
Lefkowitz Sumati
LG.Philips LCD Co. , Ltd.
McKenna Long & Aldridge LLP
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