Patent ID: 8866404

Claim:
A backlight module, wherein the backlight module comprises: a back bezel; a plurality of light-emitting diodes disposed on the back bezel; and a driving circuit electrically connected to the light-emitting diodes for driving the light-emitting diodes, wherein the driving circuit comprises: a first inductor connected between the light-emitting diodes and a power supply; a second inductor connected between the light-emitting diodes and the power supply; a p-channel metal-oxide-semiconductor (PMOS) transistor connected between the first inductor and the light-emitting diodes; an n-channel metal-oxide-semiconductor (NMOS) transistor connected between the second inductor and the light-emitting diodes; a driving circuit unit configured to output a driving signal which has a high level and a low level; and a push-pull circuit connected to a gate of the PMOS transistor and a gate of the NMOS transistor and configured to receive the driving signal with the high level or the low level, and to drive the PMOS transistor and the NMOS transistor to be alternately turned on according to the driving signal with the high level or the low level, wherein the push-pull circuit comprises a first transistor and a second transistor, and a collector of the first transistor is directly connected to another power supply, and an emitter of the first transistor is connected to an emitter of the second transistor, and a base of the first transistor is connected to the driving circuit unit, and a collector of the second transistor is electrically connected to ground, and a base of the second transistor is connected to the driving circuit unit; wherein, when the driving signal with the high level is provided to the push-pull circuit, the first transistor is turned on, and the PMOS transistor is turned on, and the NMOS transistor is turned off, and at this time, the first inductor is in a discharging state, and the second inductor is in a charging state; wherein, when the driving signal with the low level is provided to the push-pull circuit, the first transistor is turned off, and the PMOS transistor is turned off, and the NMOS transistor is turned on, and at this time, the first inductor is in the charging state, and the second inductor is in the discharging state.