Timing controller, liquid crystal display device having the same, and driving method thereof

摘要

A timing controller capable of adjusting luminance of a maximum gradation according to an amount of white of image data to thus enhance picture quality and reduce power consumption of a liquid crystal display device, a liquid crystal display device having the same, and a driving method thereof are provided. The timing controller includes: a gamma adjusting unit for receiving image data and a plurality of driving signals input from the outside, generating a gate control signal and a data control signal according to the plurality of driving signals, adjusting luminance according to an amount of white in the image data, and generating a corresponding gamma control signal.

主权项

1. A timing controller comprising:
a gamma adjusting circuit configured to receive image data and adjust luminance according to an amount of white in the image data, and generate a gamma control signal for a gamma voltage generating circuit that generates a plurality of reference gamma voltages based on the gamma control signal, wherein the gamma adjusting circuit comprises:
a pixel analyzing circuit configured to count a number of data having a gradation value equal to or greater than a reference gradation value in the image data;a backlight gain setting circuit configured to set a gain according to a section to which the counted number of data belongs, and generate a luminance control signal based on the gain; anda gamma curve adjusting circuit configured to generate the gamma control signal according to the luminance control signal generated by the backlight gain setting circuit based on the gain.