Patent ID: 9697785
Date: 2017-07-04
CPC Classifications: G09G

Claim:
1. A display device comprising: a display panel including gate lines and data lines crossing each other to define a plurality of liquid crystal cells; a gate driver to supply a scan signal to the gate lines sequentially; a data driver to supply a data voltage to the data lines in a response to a data drive control signal; a timing controller to drive the gate driver and the data driver based on at least a vertical synchronization signal and a horizontal synchronization signal that define a plurality of horizontal periods, with one horizontal period being defined by a duration from a start point of a high level period of a data enable signal to a start point of a next high level period; and a gamma voltage generator including a gamma voltage selector to supply a plurality of gamma reference voltages and a reference voltage of a black gradation to the data driver, wherein the timing controller controls the gamma voltage selector by generating a selection control signal based on at least the horizontal synchronization signal and supplying the selection control signal to the gamma voltage selector, and wherein one of the plurality of gamma reference voltages corresponding to an input image data and the reference voltage of the black gradation are alternated in each of the plurality of horizontal periods.