LIGHT EMITTING DIODE CIRCUIT AND ARRANGEMENT AND DEVICE
First Claim
1. A light emitting diode circuit comprisinga first sub-circuit comprising at least one first light emitting diode and connected to a pair of terminals, comprising a first terminal and a second terminal anda second sub-circuit comprising at least one second light emitting diode and connected to the pair of terminals in parallel with the first sub-circuit, the second sub-circuit further comprising a first switch for, in a conducting state, switching on the second light emitting diode and switching off the first light emitting diode and for, in a non-conducting state, switching off the second light emitting diode and switching on the first light emitting diode.
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Accused Products
Abstract
Disclosed are light emitting diode circuits employing first sub-circuits including first light emitting diodes and connected in parallel with second sub-circuits including second light emitting diodes and switches for, in conducting states, switching on the second light emitting diodes and switching off the first light emitting diodes and for, in non-conducting states, switching off the second light emitting diodes and switching on the first light emitting diodes. The first sub-circuits and the second sub-circuits have different signal characteristics such as different minimum threshold voltages to be realized by using different kinds of light emitting diodes, by using different total numbers of serial light emitting diodes, or by adding threshold voltage elements to the first sub-circuits.
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Citations
16 Claims
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1. A light emitting diode circuit comprising
a first sub-circuit comprising at least one first light emitting diode and 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 and connected to the pair of terminals in parallel with the first sub-circuit, the second sub-circuit further comprising a first switch for, in a conducting state, switching on the second light emitting diode and switching off the first light emitting diode and for, in a non-conducting state, switching off the second light emitting diode and switching on the first light emitting diode.
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13-14. -14. (canceled)
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15. A method for controlling light emitting diodes of a light emitting diode circuit comprising (i) a first sub-circuit comprising at least one first light emitting diode and connected to a pair of terminals, and (ii) a second sub-circuit comprising at least one second light emitting diode connected to the pair of terminals in parallel with the first sub-circuit second sub-circuit further comprising a switch, the method comprises the steps of:
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bringing the switch in a conducting state for switching on the second light emitting diode and switching off the first light emitting diode, and bringing the switch in a non-conducting state for switching off the second light emitting diode and switching on the first light emitting diode.
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16-17. -17. (canceled)
Specification