Patent ID: 8373695

Claim:
A display panel drive apparatus comprising: a drive circuit outputting drive voltages to a display panel in response to a timing control signal used for timing control of image display on said display panel; and a booster circuit feeding a boosted power supply voltage to said drive circuit, said booster circuit including: a charge pump circuit generating said boosted power supply voltage by boosting an input power supply voltage in response to a boosting clock; a comparator receiving the generated boosted power supply voltage and comparing with a reference voltage to output a comparison result; and a pulse skip circuit monitoring a voltage level of said boosted power supply voltage and controlling a boosting operation of said charge pump circuit in response to said voltage level of said boosted power supply voltage, wherein said pulse skip circuit is configured to selectively allow said charge pump circuit to initiate said boosting operation in synchronization with said timing control signal including a first timing control signal for setting an impedance state of the drive circuit, wherein the pulse skip circuit comprises: a flip-flop receiving the comparison result from the comparator at a clock input and the input power supply voltage to selectively allow said charge pump circuit to initiate said boosting operation in synchronization with said timing control signal; a NOT circuit receiving the comparison result from the comparator; and an OR circuit outputting, an OR logical operation of an output of the NOT circuit and the timing control signal, to a reset input of the flip-flop.