Patent ID: 8076872

Claim:
A light emitting diode circuit comprising: a first sub-circuit comprising at least one first light emitting diode serially connected with a threshold voltage element, the first sub-circuit being connected to a pair of terminals, comprising a first terminal and a second terminal; and a second sub-circuit comprising at least one second light emitting diode serially connected with a first switch, the second sub-circuit being connected to the pair of terminals in parallel with the first sub-circuit, wherein the first switch, in a conducting state, switches on the second light emitting diode and switches off the first light emitting diode and, in a non-conducting state, switches off the second light emitting diode and switches on the first light emitting diode, and wherein the threshold voltage element is not a light emitting diode, and is configured to increase a first minimum threshold voltage of the first sub-circuit to be greater than a second minimum threshold voltage of the second sub-circuit.