Patent ID: 8054269

Claim:
An electronic device for enhancing voltage driving efficiency for a source driver of a liquid crystal display (LCD) monitor, the electronic device comprising: a reference voltage generator for generating a plurality of grayscale reference voltages; a plurality of first coupling lines, each of the plurality of first coupling lines for transmitting one of the plurality of grayscale reference voltages; a second coupling line for transmitting one of the plurality of grayscale reference voltages, a width of the second coupling line being wider than a width of each of the plurality of first coupling lines; a data statistical unit for statistically calculating a plurality of grayscale data values to yield a statistic result which indicates a grayscale reference voltage corresponding to the most of the plurality of grayscale data values among the plurality of grayscale reference voltages; and a reference voltage modulating module coupled between the reference voltage generator and the plurality of first coupling lines and the second coupling line, for adjusting a transmission relationship between the plurality of grayscale reference voltages and the plurality of first coupling lines and the second coupling line according to the statistic result to transmit the grayscale reference voltage corresponding to the most of the plurality of grayscale data values through the second coupling line.