MULTI-DRIVING CIRCUIT OF LCD DRIVER FOR REDUCING VOLTAGE DIFFERENCE OF OUTPUT SIGNALS AND MAINTAINING UNIFORMITY OF OUTPUT SIGNALS

摘要

PURPOSE: A multi-driving circuit of an LCD driver for reducing voltage difference of output signals and maintaining uniformity of output signals is provided to reduce the voltage difference of the output signals and maintain constantly levels of the output signals by using the first amplifier for driving the second amplifiers to drive multi-outputs. CONSTITUTION: A multi-driving circuit includes a voltage divider, the first amplifier(11), and the second amplifier(12). The voltage divider is used for dividing a predetermined voltage and outputting the divided voltages. The first amplifier is used for receiving and amplifying the divided voltages and tracking the final target voltage of an output terminal. The second amplifier is used for receiving and amplifying an output signal of the first amplifier and driving the output signal to a particular range of the final target voltage. The multi-driving circuit further includes the first to the third transmission circuits(13,14,15). The first to the third transmission circuits are formed with transmission gates in order to be operated according to the first to the third control signals.