Patent ID: 8633656

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, wherein the driving circuit comprises: a direct-current to alternating-current power stage circuit; a resonant circuit electrically connected to the direct-current to alternating-current power stage circuit; a phase detector electrically connected to the resonant circuit and configured to detect voltage phases of an inductor and a capacitor of the resonant circuit and transmit a phase detection signal; a frequency adjusting module electrically connected to the phase detector and configured to obtain an operation frequency according to the phase detection signal; and a driving chip electrically connected to the frequency adjusting module and configured to drive the direct-current to alternating-current power stage circuit according to the operation frequency, wherein the operation frequency is equal to a resonant frequency of the resonant circuit.