A circuit is disclosed. The circuit includes a first transistor, to respond to a first scanning signal and to transmit a first voltage, a first capacitor, to store the first voltage, and an organic light emitting diode. The circuit also includes a second transistor, to provide a current to the organic light emitting diode, a third transistor, to respond to a second scanning signal and to transmit a first potential signal to the second transistor, and a fourth transistor, to respond to the first scanning signal and to form a diode connection of the second transistor. The circuit also includes a fifth transistor, to respond to a third scanning signal and to transmit a second signal voltage to the second transistor, and a sixth transistor, to respond to a light emitting scanning signal, and to output the current to the organic light emitting diode.