Pixel Structure

The present invention discloses a pixel structure which drives a luminous diode and includes a driving transistor, a bias voltage generator, an initialize switch, a first scanning switch, a second scanning switch and a coupling switch. The driving transistor receives the bias voltage produced by the bias voltage generator. The initialize switch is coupled between the bias voltage generator and a first reference voltage to conduct or disconnect according to the initialize signal. The first scanning switch is coupled between the bias voltage generator and a second reference voltage to conduct or disconnect according to the preceding stage scanning signal. The second scanning switch conducts or disconnects according to the current scanning signal. The coupling switch is coupled between the bias voltage generator and the driving transistor to conduct or disconnect according to the coupling control signal.