Liquid crystal display device and driving method thereof

A method of driving a liquid crystal display device comprising a liquid crystal display panel on which a plurality of data lines and a plurality of gate lines cross each other and having a common electrode, the method comprising:

• generating a gate timing control signal and a data timing control signal, wherein the gate timing control signal including a first gate start pulse, a second gate start pulse, a gate shift clock, a first gate output enable signal and a second gate output enable signal, and wherein the data timing control signal including a first source output enable signal and a second source output enable signal;
• supplying positive polarity/negative polarity analog video data voltages to the data lines video data voltage to the data lines when the first and second source output enable signals are input at a same logic level, and supplying positive polarity/negative polarity black voltages to the data lines in response to a pulse of the second source output enable signal by using a data driving circuit;
• shifting the first gate start pulse in accordance with the gate shift clock and sequentially supplying first gate pulses which are synchronized with the positive polarity/negative polarity analog video data voltages to the gate lines included a first block of the liquid crystal display panel during a low logic period of the first gate output enable signal by using a first gate drive IC;
• and
• shifting a first carry signal supplied from the first gate drive IC in accordance with the gate shift clock, and sequentially supplying second gate pulses which are synchronized with the positive polarity/negative polarity black voltages to the gate lines included a second block of the liquid crystal display panel during a low logic period of the second gate output enable signal by using a second gate drive IC.