Patent ID: 8456105

Claim:
A driving circuit capable of enhancing energy conversion efficiency, the driving circuit comprising: a switch having a first terminal for coupling to a first terminal of a first light emitting diode group of a plurality of light emitting diode groups, and receiving a first voltage, a second terminal, and a third terminal for coupling to a first terminal of a last light emitting diode group of the plurality of light emitting diode groups; a detecting unit having an output terminal coupled to the second terminal of the switch for outputting a switch control signal, wherein the switch control signal is used for controlling turning-on and turning-off of the switch; and a current supply unit having a plurality of input current terminals, and a ground terminal coupled to ground, wherein each input current terminal of the plurality of input current terminals is used for coupling to a second terminal of a corresponding light emitting diode group of the plurality of light emitting diode groups.