Patent ID: 8907992

Claim:
An overdriving value generating method, adapted to a liquid crystal display (LCD), and the overdriving value generating method comprising: receiving a current gray value and a previous gray value, wherein the current gray value and the previous gray value correspond to a pixel of the LCD; obtaining a first gray reference value and a second gray reference value closed to the current gray value, and a first previous gray reference value and a second previous gray reference value closed to the previous gray value according to a look-up table, and obtaining four first overdriving values according the first gray reference value, the second gray reference value, the first previous gray reference value and the second previous gray reference value, wherein the first gray reference value is the same to the first previous gray reference value, and the second gray reference value is the same to the second previous gray reference value; and obtaining a target overdriving value corresponding to the current gray value and the previous gray value through a parallelogram interpolation operation according to the current gray value, the previous gray value, the first gray reference value, the second gray reference value, the first previous gray reference value, the second previous gray reference value and the first overdriving values, wherein the parallelogram interpolation operation calculates an extending overdriving value according to three of the first overdriving values closed to the target overdriving value, and then performs an interpolation operation according to the three first overdriving values closed to the target overdriving value and the extending overdriving value to obtain the overdriving value, and the extending overdriving value is in outside of an area formed by the three first overdriving values closed to the target overdriving value.