Driving method and driving apparatus of liquid crystal display

摘要

A driving method includes sensing illuminance of ambient light determining a first contrast ratio based on the sensed illuminance, determining a second contrast ratio and a relative ratio of the contrast ratio, determining a gradient of a compensation gamma curve using the relative ratio, determining an average gray of input data signals, and determining the compensation gamma curve.

主权项

1. A driving method of a liquid crystal display, comprising:
sensing illuminance of ambient light; determining a first contrast ratio based on the sensed illuminance; determining a second contrast ratio when the ambient light is substantially blocked; determining a relative ratio (K) of the second contrast ratio to the first contrast ratio; determining a gradient of a compensation gamma curve using the relative ratio (K); determining an average gray level of input data signals; determining the compensation gamma curve based on the determined average level of input data signals; and driving the liquid crystal display based on the determined compensation gamma curve, wherein the gradient (Gc) of the compensation gamma curve defined as Gc=K*Gd, where Gd is a gradient of a first relative gamma curve.