Patent ID: 7663594
Filing Date: 2010-02-16
Classification: G09G

Abstract:
1. A liquid crystal display device comprising: a liquid crystal panel having a plurality of gate line and a plurality of data line; a data driver that drives data lines of the liquid crystal panel such that a pair of pixels adjacent along the data line are charged with pixel data voltages of polarity opposite to that of another pair of pixels adjacent to the pair of the pixels; a polarity controller that controls the data driver such that a polarities of the pixel data voltages to be outputted from the data driver to the data lines are inverted according to the pixels adjacent in a horizontal or vertical direction; a charge sharing unit configurable to selectively allow the data lines to share charges at intervals between periods in which the pixel data voltages with a same polarity are supplied to the pair of the pixels adjacent along the data line; and a charge sharing controller that controls the charge sharing unit such that the charge sharing is selectively skipped based on the pixel data voltages of the pair of the pixels adjacent along the data line, wherein the charge sharing unit includes a plurality of first switches connected between the data lines and the data driver and a plurality of second switched connected between the data lines, wherein the charge sharing controller generates a charge sharing control signal to be applied to the charge sharing unit based on the pixel data voltages, a horizontal sync signal and a polarity signal from the polarity controller.