Output buffer circuit and source driving circuit including the same

摘要

A source driving circuit includes an output buffer circuit to compensate for slew rate of signals used to drive a display device. The output buffer circuit includes a bias current control signal generating circuit and a channel amplifying circuit. The bias current control signal generating circuit performs an exclusive OR operation on an input signal and an output signal of a reference operational amplifier to generate a bias current control signal. The channel amplifying circuit adjusts the slew rate of a plurality of output voltage signals in response to the bias current control signal. The output signals are then used to control the display device.