A drive circuit, a display assembly, and a display device are provided. The drive circuit includes a display drive module, at least one display control module, and a discharge control module. The display control module is configured to receive a data signal and transmit a first power-supply voltage to the display drive module according to the data signal. The display drive module is configured to transmit, under control of a scan signal and the data signal, the first power-supply voltage to a light-emitting element upon reception of the first power-supply voltage, to drive the light-emitting element to emit lights. The discharge control module is configured to receive the first power-supply voltage, and discharge the light-emitting element by adjusting a potential of the scan signal when the first power-supply voltage drops.