Operational amplifier, drive circuit, and method for driving liquid crystal display device

摘要

The present invention enables rising and falling slew rates to be symmetrized and secures a drive current at the time of 2H inversion driving. An operational amplifier in accordance with one aspect of the present invention includes: a first output transistor and a second output transistor connected in series between a first power supply and a second power supply; an output terminal connected to a node between the first output transistor and the second output transistor; a phase-compensating element provided either between the gate of the first output transistor and the output terminal or between the gate of the second output transistor and the output terminal; and a floating current source connected between the gate of the first output transistor and the gate of the second output transistor.