Source line repair circuit, source driver circuit, liquid crystal display device with source line repair function, and method of repairing source line

摘要

A source driver circuit provides a source driving signal to a disconnected source line. The source driver circuit includes a shift register, a latch unit, a DAC unit, a buffer unit, and a source line repair circuit. A source line repair circuit receives a common voltage signal and a source driving signal corresponding to the disconnected source line, selects an amplifier having a same polarity type as a polarity type of an amplifier constituting the buffer unit in response to a source driving signal to provide an output signal of the selected amplifier to the disconnected source line. The source driver circuit includes the source line repair circuit which may select the amplifier having the same polarity as the polarity of the amplifier of the buffer, and thus may safely provide the source driving signal to the disconnected source line.