Display apparatus and control method thereof

A display apparatus comprising:

• a light-emitting device;
• and
• a driving circuit configured to drive the light-emitting device, the driving circuit comprising a constant current output circuit configured to output a constant current, and a pulse width modulation (PWM) control circuit,
• wherein the PWM control circuit comprises:
• a first transistor including a first source connected to an output node of the constant current output circuit, a first drain connected to an anode of the light-emitting device, and a first gate connected to a control node, the first transistor being turned on or off based on a voltage applied to the first gate;
• a second transistor including a second source connected to a first input terminal, a second gate connected to a second input terminal, and a second drain connected to the control node;
• and
• a third transistor including a third source connected to the control node, a third drain connected to a third input terminal, and a third gate to which an emitting permission signal or a bias voltage is applied.