LED CIRCUITS AND ASSEMBLIES
First Claim
1. An AC-driven LED circuit comprising:
- a first basic circuit having LEDs, each LED having an input and an output, and the circuit having at least first and second branches connecting at first and second common points, the common points providing input and output for an AC driving current for the circuit;
the first branch having a first and a second LED, and the second branch having a third and a fourth LED;
the first LED is connected to the second LED in opposing series relationship with the inputs of the first and second LEDs defining a first branch junction;
the third LED is connected to the fourth LED in opposing series with the outputs of the third and fourth LEDs defining a second branch junction,the first and second branches are connected to one another such that the output of the first LED is connected to the input of the third LED at the first common point and the output of the second LED is connected to the input of the fourth LED at the second common point;
a first cross-connecting circuit branch having at least a fifth LED, the first cross-connecting circuit branch being configured such that the input of the fifth LED is connected to the second branch junction and the output is connected to the first branch junction; and
,wherein the first basic circuit is formed on a single semiconductor chip.
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Accused Products
Abstract
An AC-driven LED circuit includes a first circuit having a first branch and a second branch which connect at first and second common point The common points provide input and output for an AC driving current from a driver of the circuit The first branch has first LED and second LED, the first LED being connected to second LED in opposing series relationship with the inputs of the first and second LEDs defining a first branch junction A second branch has a third LED and a fourth LED, the third LED is connected to the fourth LED in opposing series relationship with the outputs of the third and fourth LEDs defining a second branch junction Improvement in performance and scalability is provided by adding n diodes to a given basic circuit and x cross connecting circuit branch diodes and providing one or more basic circuits in series and or basic.
42 Citations
14 Claims
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1. An AC-driven LED circuit comprising:
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a first basic circuit having LEDs, each LED having an input and an output, and the circuit having at least first and second branches connecting at first and second common points, the common points providing input and output for an AC driving current for the circuit; the first branch having a first and a second LED, and the second branch having a third and a fourth LED; the first LED is connected to the second LED in opposing series relationship with the inputs of the first and second LEDs defining a first branch junction; the third LED is connected to the fourth LED in opposing series with the outputs of the third and fourth LEDs defining a second branch junction, the first and second branches are connected to one another such that the output of the first LED is connected to the input of the third LED at the first common point and the output of the second LED is connected to the input of the fourth LED at the second common point; a first cross-connecting circuit branch having at least a fifth LED, the first cross-connecting circuit branch being configured such that the input of the fifth LED is connected to the second branch junction and the output is connected to the first branch junction; and
,wherein the first basic circuit is formed on a single semiconductor chip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13)
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10. (canceled)
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14. An AC-driven LED circuit comprising:
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a first basic circuit having LEDs, each LED having an input and an output, and the circuit having at least first and second branches connecting at first and second common points, the common points providing input and output for an AC driving current for the circuit; the first branch having a first and a second LED, and the second branch having a third and a fourth LED; the first LED is connected to the second LED in opposing series relationship with the inputs of the first and second LEDs defining a first branch junction; the third LED is connected to the fourth LED in opposing series with the outputs of the third and fourth LEDs defining a second branch junction, the first and second branches are connected to one another such that the output of the first LED is connected to the input of the third LED at the first common point and the output of the second LED is connected to the input of the fourth LED at the second common point; a first cross-connecting circuit branch having at least a fifth LED, the first cross-connecting circuit branch being configured such that the input of the fifth LED is connected to the second branch junction and the output is connected to the first branch junction; and
,wherein the arrangement of the LEDs provide an imbalance bridge effect to the basic AC-driven circuit and one or more of a transient voltage suppressor device, a fuseable element, and a resistor is attached to the first basic circuit.
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Specification