Lg Philips Lcd Co., Inc.

Seok Hee Jeong

Yong Min Ha

Han Sang Lee

Hoon Ju Chung

Myung Ho Lee

Dai Yun Lee

An apparatus for generating gamma voltage includes a plurality of gamma set generators and a gamma set selector. The gamma set generators generate a plurality of gamma voltage sets that include gamma voltages having different voltage levels from each other such that each gamma voltage set corresponds with a brightness mode. The gamma set selector selects any one of the gamma voltage sets in response to the brightness mode and drives data lines of a display device in accordance with the selected gamma voltage set.

Apparatus and method of generating gamma voltage

An electro-luminescence display device includes a supply voltage source; a data driver for driving a plurality of data lines arranged within a panel; a gamma voltage generator for generating gamma voltages to generate analog data voltages corresponding to externally inputted data signals provided to the data driver; and a threshold voltage compensator installed between the gamma voltage generator and the supply voltage source for controlling a supply voltage of the supply voltage source and to apply the controlled voltage to the gamma voltage generator.

Growing community of inventors

Daegu, South Korea

Seok Hee Jeong