Patent ID: 7969407

Claim:
A backlight driving circuit comprising: a first power supply; a second power supply; a signal output terminal; an AND gate, which comprises two input ends as two signal input ends of the backlight driving circuit, and an output end; a follower comprising a first positive power supply terminal connected to the second power supply through a diode, in which a cathode of the diode is connected to the first positive power supply terminal, and an anode of the diode is connected to the second power supply, and a first negative power supply terminal connected to the signal output terminal; a capacitor connected between the first positive power supply terminal and the first negative power supply terminal of the follower; a reverser, which comprises a second positive power supply terminal connected to the second power supply, and a second negative power supply terminal grounded; a first transistor, which is a N-Channel mode metal-oxide-semiconductor field-effect transistor, having a gate electrode connected to the output end of the AND gate through the follower, a source electrode connected to the signal output terminal, a drain electrode connected to the first power supply; and a second transistor, which is a N-Channel mode metal-oxide-semiconductor field-effect transistor, comprising a gate electrode connected to the output end of the AND gate through the reverser, a source electrode connected to the ground, a drain electrode connected to the signal output terminal.