Patent ID: 8519630

Claim:
A driving circuit capable of enhancing energy conversion efficiency, the driving circuit comprising: a switch having a first terminal for receiving a first voltage, a second terminal, and a third terminal for being coupled to a first terminal of at least one series of light emitting diodes; a detecting unit having a first terminal for being coupled to a second terminal of the at least one series of light emitting diodes, a second terminal coupled to the second terminal of the switch for outputting a switch control signal, and a third terminal coupled to ground, wherein the detecting unit is used for generating the switch control signal according to a voltage of the second terminal of the at least one series of light emitting diodes; a current supply unit having a first terminal for being coupled to the second terminal of the at least one series of light emitting diodes, and a second terminal coupled to the ground, wherein the current supply unit is used for providing a driving current to the at least one series of light emitting diodes; and an energy storage unit having a first terminal for being coupled to the first terminal of the at least one series of light emitting diodes, and a second terminal coupled to the ground, wherein the energy storage unit is used for being charged according to a charge current when the switch is turned on, and transmitting energy stored in the energy storage unit to the at least one series of light emitting diodes when the switch is turned off.