Adjustment method of LCD overdrive voltage and device thereof

摘要

Disclosed are an adjustment method of an LCD (Liquid Crystal Display) overdrive voltage and the device. The adjustment method comprises steps below: locating a transistor at a position capable of sensing a temperature of an LCD panel; providing a constant current source to a drain of the transistor and a conducting voltage to the transistor, and a voltage difference between a source and a gate changing according to a temperature changing of the LCD panel; receiving voltages of the source and the gate of the transistor to calculate a voltage difference therebetween and outputting an amplified value of the voltage difference by an error amplifier; receiving the amplified value of the voltage difference and outputting corresponding binary signals by an analog to digital converter; providing a selector storing a plurality of overdrive voltages for selecting different overdrive voltages according to the different binary signals to adjust the LCD overdrive voltage.

主权项

1. An adjustment method of an LCD (Liquid Crystal Display) overdrive voltage, wherein the adjustment method comprises steps of:
locating a transistor at a position capable of sensing a temperature of an LCD panel; providing a constant current source to a drain of the transistor and a conducting voltage to the transistor, and a voltage difference between a source and a gate of the transistor changing according to the temperature change of the LCD panel; receiving voltages of the source and the gate of the transistor to calculate a voltage difference between the source and the gate and outputting an amplified value of the voltage difference by an error amplifier; receiving the amplified value of the voltage difference and outputting corresponding binary signals by an analog to digital converter; providing a selector of storing a plurality of overdrive voltages, and the selector selecting different overdrive voltages according to the different binary signals to adjust the LCD overdrive voltage; and utilizing different overdrive voltages under different temperature conditions.