Title: Method and apparatus for driving liquid crystal display
Application Number: 200410059443 Application Date: 2004.06.28
Publication Number: 1617213 Publication Date: 2005.05.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G09G3/36
Applicant(s) Name: LG Philips LCD Co., Ltd. Address:
Inventor(s) Name: Baik Seong H.
Attorney & Agent: xu jinguo qi jianguo
Abstract:
    A driving method and apparatus for a liquid crystal display capable of selectively emphasizing a contrast is disclosed. In the apparatus, an image signal modulator partially expands or reduces the contrast of input data to generate output data. The brightness components for one frame are divided into a plurality of areas and an area having a large brightness difference is removed from each area to thereby produce new data. Gray levels of the new data are divided into a plurality of regions of different slopes. The range of output gray levels is enlarged in proportion to the slopes, thereby partially emphasizing the contrast ratio. A timing controller re-arranges the output data to apply it to a data driver.
Time: 5
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