Patent ID: 7446749

Claim:
A method for measuring response time of liquid crystal, comprising: generating a liquid crystal driving signal having a variable voltage level that is changed in accordance with a response property of a liquid crystal display panel and a target voltage level; supplying the liquid crystal driving signal to the liquid crystal display panel; detecting the response property of the liquid crystal display panel corresponding to the liquid crystal driving signal; adjusting the variable voltage level until the response property reaches a desired level; setting a modulated data substantially equal to the variable voltage level when the response property reaches the desired level; and searching modulated data for different temperatures by changing the temperature of the liquid crystal display panel and by repeating the generating step, the supplying step, the detecting step, the adjusting step and the setting step; wherein the modulated data comprises: a high temperature modulation data for the liquid crystal display panel in high temperature; a normal temperature modulation data for the liquid crystal display panel in normal temperature; and a low temperature modulation data for the liquid crystal display panel in low temperature.