Patent ID: 7394448
Filing Date: 2008-07-01
Classification: G09G

Abstract:
1. An apparatus for driving a liquid crystal, comprising: a picture quality improving unit that receives first data, extracts a brightness component for at least one liquid crystal cell of the liquid crystal display from the first data, analyzes brightness of the first data using the extracted brightness component, and generates second data having a contrast extended from that of the first data in accordance with the analyzed brightness; a timing controller that rearranges the second data to supply the second data to a data driver; a backlight that supplies light to the liquid crystal panel divided into a plurality of regions in accordance with a driving voltage or current, wherein the backlight comprises a plurality of lamps, each of the lamps providing light to a different region of the plurality of regions; and an inverter that supplies the driving voltage or current to the backlight; wherein the picture quality improving unit controls individually the plurality of lamps so that light proportional to the brightness of the each region is supplied to the liquid crystal panel from the backlight.