Apparatus and method for driving a liquid crystal display

A method of driving a liquid crystal display, comprising:

• supplying a gate pulse to a plurality of gate lines provided at a liquid crystal display panel;
• supplying a positive polarity gray scale level voltage and a negative polarity gray scale level voltage to a plurality of data lines provided at the liquid crystal display panel;
• and
• alternatively supplying a first common voltage and a second common voltage defined as a division reference of the positive polarity gray scale level voltage and the negative polarity gray scale level voltage based on a supply point of a gate pulse to the liquid crystal display panel.

A driving apparatus comprising:

• a gate driver that supplies a gate pulse;
• a data driver that supplies a positive polarity gray scale level voltage and a negative polarity gray scale level voltage;
• a controller that controls a common voltage level based on a supply point of a gate pulse;
• and
• a common voltage supplier that alternatively supplies a first common voltage and a second common voltage defined as a division reference of the positive polarity gray scale level voltage and the negative polarity gray scale level voltage based on a control signal of the controller.