Patent ID: 7133006

Claim:
A drive apparatus for driving a display panel having a plurality of row electrode groups each including a plurality of row electrodes, and a plurality of column electrodes arrayed in the direction intersecting with each row electrode of said plurality of row electrode groups so as to form display cells at the intersection points; said drive apparatus further comprising: a controller for generating a control signal for each of said row electrode groups; a row electrode drive circuit provided for each of said row electrode groups, for generating a drive pulse in response to said control signal and supplying the drive pulse to each row electrode of the corresponding row electrode group; and an adjusting device for delaying the control signal which is supplied to said drive circuit for each of said row electrode groups so that the drive circuits of all of said row electrode groups respectively generate the drive pulses at the same timing, wherein said adjusting device is a delay circuit including a variable resistor and a capacitor provided for each of said row electrode groups.