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.

主权项

1. An output buffer circuit, comprising:
a bias current control signal generating circuit including a reference operational amplifier, the bias current control signal generating circuit to perform an exclusive OR operation on an input signal and an output signal of the reference operational amplifier to generate a bias current control signal; and a channel amplifying circuit to adjust a slew rate of a plurality of output voltage signals in response to the bias current control signal, the channel amplifying circuit to perform buffering on a plurality of input voltage signals to generate the plurality of output voltage signals.