Patent ID: 7173454

Claim:
A display device driver circuit for driving a flat panel display, the display device driver circuit comprising: a plurality of output stage circuits, each output stage circuit including an input terminal, an output terminal, a high voltage supply terminal supplying a high voltage, a reference voltage supply terminal supplying a reference voltage, a first transistor electrically connected between the output terminal and the high voltage supply terminal, and a second transistor electrically connected between the output terminal and the reference voltage supply terminal, each output stage circuit turning on the first transistor or the second transistor in response to an input signal inputted from the input terminal in synchronism with a clock signal, whereby to output an output signal from the output terminal thereof; and a timer circuit, the timer circuit outputting to the output stage circuits a control signal for turning off the first transistor and the second transistor when no clock signal is inputted thereto for a predetermined period of time upon detecting a last clock signal, the output stage circuits turning off the first transistor and the second transistor in response to the control signal from the timer circuit.