Patent ID: 6958742

Claim:
A current drive system for current-driving a plurality of display element circuits in a display panel, the system comprising: a plurality of drivers associated with the respective display element circuits, each of the drivers including at least one transistor whose gate is connected to a bias line and which allows a current in an amount corresponding to a bias voltage applied through the bias line to flow between the source and drain of the transistor and at least one switch associated with the transistor and performing switching operation based on display data to electrically connect or disconnect the transistor to/from a drive line for driving an associated one of the display element circuits; and a bias circuit having an output impedance which is low enough to have a voltage variation occurring on the bias line due to the switching operation of the switch converge within a period during which the display data is written, the bias circuit generating the bias voltage and outputting the bias voltage to the bias line.