Patent ID: 7274351

Claim:
A driver circuit for a display device including a plurality of signal supplying lines, comprising: a writing circuit having a plurality of first switches for each of the signal supplying lines so as to carry out writing of a write signal into the signal supplying lines by bringing the first switches into conduction, the first switches being controlled between a conductive state and a non-conductive state according to a voltage of a first control terminal which is capacitive; a shift register having a plural stages of flip-flops for outputting a timing pulse used for the writing toward the first control terminal so that the timing pulse is sequentially transferred through the flip-flops so as to carry out the writing at predetermined cycles; and a pre-charging circuit having a plurality of second switches for each of the signal supplying lines so as to carry out pre-charging of the signal supplying lines by bringing the second switches into conduction, the second switches being controlled between a conductive state and a non-conductive state according to a voltage of a second control terminal which is capacitive, while the writing is carried out into a part of the signal supplying lines, the pre-charging circuit carrying out the pre-charging of at least one of remaining signal supplying lines, the shift register including control signal supplying circuits which output a pre-charging control signal for controlling the second switches to the second control terminal via a second signal line which is separated from a first signal line which transmits the timing pulse to the first control terminal.