Patent ID: 8212845

Claim:
A liquid crystal display device comprising: a liquid crystal panel configured to include a plurality of liquid crystal cells formed in regions which are defined by crossing a plurality of gate lines and a plurality of data lines; an image analyzer configured to analyze whether or not an image data corresponds to a specific pattern in which a black or white gray-scale data having a large difference between positive and negative data voltages is continuously opposed to the liquid crystal cells of a vertical direction; a polarity control signal modulator configured to respond to a control signal from the image analyzer and modulate a polarity control signal, so as to prevent the black or white gray-scale data continuously opposed to the liquid crystal cells of the vertical direction from being polarity-inverted; and a data driver configured to apply the data voltages to the data lines on the liquid crystal panel on the basis of the modulated polarity control signal applied from the polarity control signal modulator.