Patent ID: 8098224

Claim:
A driver circuit for a display device including a plurality of signal supply lines, the driver circuit comprising: a write circuit for writing write signals onto the signal supply lines line by line or by units of lines so that periods in each of which the write signals are written to the signal supply lines overlap; a precharge circuit for precharging the signal supply lines, the precharge circuit including precharge switches each configured to precharge corresponding signal supply lines based on receipt of a control signal of a low level; and a NOR circuit configured to output a nondisjunction of a first precharge control signal and a second precharge control signal directly to the precharge circuit, the precharge switches of the precharge circuit including a P-channel MOS transistor having a gate configured to receive the output directly from the NOR circuit, the precharge circuit being configured to precharge the signal supply lines so that during the period in which a write signal is written by the write circuit onto a signal supply line, the precharge circuit precharges a first other signal supply line in a first period and precharges a second other signal supply line in a second period, the first period and the second period not overlapping, and, while no write signal is written by the write circuit onto any of the signal supply lines, the precharge circuit precharges the signal supply lines simultaneously.