A source driver that drives source lines of an LCD panel includes a first driver block including first to pth source output blocks arranged along a first direction, each of the source output blocks including a first output circuit that drives a source line, a second driver block including (p+1)th to qth source output blocks arranged along the first direction, each of the source output blocks including a second output circuit that drives a source line, and a precharge line that supplies a precharge voltage for precharging each of a first output of the first output circuit and a second output of the second output circuit. The precharge voltage is supplied to a voltage supply point of the precharge line provided so that a load from the voltage supply point to an edge of the pth source output block is equal to a load from the voltage supply point to an edge of the (p+1)th source output block.