Patent ID: 7515124

Claim:
An organic EL drive circuit for resetting organic EL elements or capacitors of pixel circuits of an organic EL display panel through terminal pins of said organic EL display panel in a reset period of a timing control signal having a predetermined frequency, for dividing a display period corresponding to a scan period of one horizontal line and the reset period corresponding to a retrace period of the horizontal scan, comprising: an amplifier circuit for generating a predetermined constant voltage for resetting said organic EL elements or capacitors; a reset switch provided between an output terminal of said amplifier circuit and one of said terminal pins and ON/OFF operated by one signal of the timing control signal, a reset control signal similar to the timing control signal, a reset pulse and another pulse generated in the reset period in synchronism with one of these signals or the reset pulse; and an operating current switching circuit setting in response to the one signal an operating current of said amplifier circuit to an idling state current in the display period and a reset current required for a reset operation in the reset period or a period in which either the reset pulse or the another pulse is generated.