A source driver (20) includes: a first amplifier circuit and a second amplifier circuit each amplifying either one of input signals that are in-phase and antiphase; and a switching control circuit (29) which supplies an offset switching signal (4) for switching the input signals, the switching control circuit (29) supplying the offset switching signal (4) having a higher frequency than a horizontal synchronization signal. This provides a display drive circuit capable of enhancing a display quality while preventing a flicker from occurring in an entire display screen.