Patent ID: 8390554

Claim:
A liquid crystal display device comprising: a liquid crystal display panel comprising: data lines; gate lines crossing the data lines; and liquid crystal cells arranged in a matrix format at each of crossings of the data lines and the gate lines; a data drive circuit configured to convert digital video data into a positive/negative data voltage using gamma reference voltages to supply the positive/negative data voltage to the data lines; and a gamma voltage adjusting unit configured to: increase the potentials of the gamma reference voltages during a first horizontal blanking period when a polarity of a data voltage is inversed, a horizontal blanking period being a period between the application of successive data voltages to a pixel; supply a data voltage based on the increased gamma reference voltages during the first horizontal blanking period; supply a normal data voltage based on a normal gamma reference voltages during a normal period subsequent to the first horizontal blanking period; decrease the potentials of the gamma reference voltages during a second horizontal blanking period between the successively generated data voltages of the same polarity; supply a data voltage based on the decreased gamma reference voltages during the second horizontal blanking period; and supply a normal data voltage based on a normal gamma reference voltages during a normal period subsequent to the second horizontal blanking period.