Patent ID: 7859524

Claim:
A liquid crystal display comprising: a timing controller outputting digital gamma data for respective R, G and B colors; and a data driver comprising a digital gamma storage storing the digital gamma data from the timing controller, a gamma reference voltage generator generating gamma reference voltages for respective R, G and B colors, which are used in converting image signals into analog voltages on the basis of the stored digital gamma data, and a digital-to-analog converter converting image data for each of R, G and B into analog voltages to output them on the basis of the generated gamma reference voltages, wherein the gamma reference voltage generator comprises: a plurality of DACs sequentially outputting each of gamma reference voltages, which are generated by receiving and converting serialized digital gamma data with a first and a second polarities into analog data, through one output line, and provided for each of R, G and B and have a multi-to-one method; and a plurality of sample/hold circuit unit corresponding to the plurality of DACs, respectively, and outputting sampled gamma reference voltages for each of R, G and B after performing sample/hold treatment of the gamma reference voltages sequentially outputted from the DACs and having a one-to-multi method.