Pixel structure

A pixel structure, comprising:

• a light emitting diode, wherein a cathode terminal of the light emitting diode is configured to receive a first power supply voltage;
• a first transistor, wherein a first port of the first transistor is coupled to an anode terminal of the light emitting diode;
• a capacitor, wherein a first port of the capacitor is coupled to a gate of the first transistor, a second port of the capacitor is coupled to the cathode terminal of the light emitting diode, and the capacitor is configured to store a data signal in a first duration;
• a second transistor, wherein a first port of the second transistor is configured to receive a second power supply voltage, a gate of the second transistor is configured to receive a pulse width modulation (PWM) signal in a second duration, and a second port of the second transistor is coupled to a second port of the first transistor;
• a third transistor, wherein a first port of the third transistor is coupled to the gate of the first transistor, a second port of the third transistor is configured to receive the data signal, and a gate of the third transistor is configured to receive, in the first duration, a first scanning signal;
• and
• a fourth transistor, wherein a first port of the fourth transistor is coupled to the gate of the second transistor, a second port of the fourth transistor is configured to receive the PWM signal, and a gate of the fourth transistor is configured to receive, in the second duration, a second scanning signal,
• wherein the second transistor is turned on for a conducting time in the second duration according to the PWM signal, and the first transistor provides, in the conducting time, a drive current to the light emitting diode according to the data signal.