Patent ID: 7432904

Claim:
A source driver of a liquid crystal display device that drives adjacent source lines with source line driving signals having a mutually inverted phase relationship, the source driver comprising: a normal amplifier that amplifies an analog image signal and generates a source line driving signal that drives one of the source lines in response to a polarity control signal; a logic circuit that generates at least one of a switch signal and an inverted signal of the switch signal in response to the polarity control signal and an external control signal; and a repair amplifier that, when connected to the source line driving signal, amplifies the source line driving signal, in response to the at least one of the switch signal and the inverted signal of the switch signal, to generate a repair source line driving signal that drives a repair line, wherein the repair line is connected to a part of the source line that is not driven by the source line driving signal due to a defect of the source line.