Common voltage adjusting method for liquid crystal display

Details Common voltage adjusting method for liquid crystal display Common voltage adjusting method for liquid crystal display

2011-08-02

2011-08-02

Wang, Quan-Zhen (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S099000

Reexamination Certificate

active

07990363

ABSTRACT:
An exemplary common voltage adjusting method for a liquid crystal display (LCD) (20) includes: providing a positive high level voltage to two sub-pixels of a first pixel unit and providing a negative high level voltage to the other sub-pixel of the first pixel unit in a first frame; inspecting the first pixel unit and generating a first color parameter; providing a negative high level voltage to the two sub-pixels of a second pixel unit and providing a positive high level voltage to the other sub-pixel of the second pixel unit in a second frame; inspecting the second pixel unit and generating a second color parameter; generating a common voltage adjusting parameter according to a comparison result of the first color parameter with the second color parameter; and adjusting a common voltage of the LCD according to the common voltage adjusting parameter for confirming a preferred common voltage.

REFERENCES:
patent: 6593921 (2003-07-01), Nakanishi et al.
patent: 2005/0276502 (2005-12-01), Brown Elliott et al.
patent: 2006/0221044 (2006-10-01), Negley et al.
patent: 1632647 (2005-06-01), None

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