Patent ID: 8681186
Filing Date: 2014-03-25
Classification: G09G

Abstract:
1. A data driver comprising: an amplifier comprising respective output buffers corresponding to respective data lines, the respective output buffers being configured to output data signals to the respective data lines; and a switch unit between output terminals of the output buffers and the data lines corresponding thereto, wherein the switch unit comprises a first switch coupled between a source for providing a middle voltage and the output terminals; and a second switch coupled between the output terminals and the data lines, wherein the middle voltage is one half (½) of a maximum swing voltage of the data signals implemented as a plurality of gray scale voltages, wherein the middle voltage is implemented by comparing ½ of a sum of a first gray scale voltage of the gray scale voltages at a 0 gray scale level and a second gray scale voltage of the gray scale voltages at a maximum gray scale level, with a middle gray scale voltage of the gray scale voltages and selecting one of the gray scale voltages that is closest to the ½ of the sum of the first gray scale voltage at the 0 gray scale level and the second gray scale voltage at the maximum gray scale level.