Method and apparatus for driving liquid crystal display

Details Method and apparatus for driving liquid crystal display Method and apparatus for driving liquid crystal display

2004-06-28

2010-12-07

Eisen, Alexander (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S089000, C345S690000, C348S672000, C348S678000

Reexamination Certificate

active

07847782

ABSTRACT:
A driving method and apparatus for a liquid crystal display is provided in which a contrast ratio of data to be displayed can be expanded and the brightness of a back light can be changed using an accumulated result of a plurality of frames. In the driving method, data to be displayed is converted into brightness components and arranged into a histogram for each frame. Second data having an expanded contrast is generated using the histograms of at least two frames, including the histogram of the current frame. Averages of the histograms are calculated and used to control the brightness of the back light. The averages may be weighted such that frames closer to the current frame have a larger effect.

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