Display device and driver thereof

A driver for driving a light emitting unit array of a display device, the driver including:

• a plurality of driving units, each of the plurality of driving units includes:
• a driving circuit configured to provide a driving current to a corresponding column of light emitting units in the light emitting unit array according to a pulse width modulation signal, during a turn-on period of a channel switch;
• a charge path circuit configured to be connected in parallel with the driving circuit, and to be turned on during the turn-on period of the channel switch to form a charge path, and provide a charging current to the corresponding column of the light emitting units through the charge path;
• and
• a discharge path circuit configured to be connected in parallel with the driving circuit, and to be turned-on after the channel switch is turned off, to form a discharge path, so that the residual charges of the corresponding column of the light emitting units are discharged through the discharge path.