Solid state lighting apparatus and methods using integrated driver circuitry
First Claim
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1. A lighting apparatus comprising:
- a first substrate comprising a switching circuit; and
a second substrate mechanically attached to the first substrate and comprising at least two light emitting diodes (LEDs) interfaced with the switching circuit, the switching circuit being configured to vary interconnections among the at least two LEDs responsive to a varying voltage produced by a power source to provide a plurality of different parallel and serial arrangements of the at least two LEDs including an arrangement wherein at least two parallel interconnected subsets of the at least two LEDs are connected in series with each other.
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Abstract
A lighting apparatus includes a first substrate including a switching circuit, the switching circuit including a first port, a second port and a current control circuit configured to generate a current at the second port of the current control circuit responsive to a varying voltage at the first port. The apparatus further includes a second substrate mounted on the first substrate and including at least two LEDs electrically coupled to the second port of the current control circuit of the first substrate.
428 Citations
20 Claims
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1. A lighting apparatus comprising:
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a first substrate comprising a switching circuit; and a second substrate mechanically attached to the first substrate and comprising at least two light emitting diodes (LEDs) interfaced with the switching circuit, the switching circuit being configured to vary interconnections among the at least two LEDs responsive to a varying voltage produced by a power source to provide a plurality of different parallel and serial arrangements of the at least two LEDs including an arrangement wherein at least two parallel interconnected subsets of the at least two LEDs are connected in series with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device comprising:
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a control circuit substrate configured to be mechanically attached to an LED substrate and comprising a switching circuit and a plurality of contacts coupled to the switching circuit and configured to be electrically coupled to corresponding contacts of the LED substrate, wherein the switching circuit is configured to vary interconnections among at least two LEDs on the LED substrate responsive to a varying voltage produced by a power source to provide a plurality of different parallel and serial arrangements of the at least two LEDs including an arrangement wherein at least two parallel interconnected subsets of the at least two LEDs are connected in series with each other. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus comprising;
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a first planar substrate comprising at least two LEDs; and a second planar second substrate mechanically attached to the first planar substrate in a stacked relationship and comprising a switching circuit electrically coupled to the at least two LEDs and configured to vary interconnections among the at least two LEDs responsive to a varying voltage produced by a power source to provide a plurality of different parallel and serial arrangements of the at least two LEDs including an arrangement wherein at least two parallel interconnected subsets of the at least two LEDs are connected in series with each other. - View Dependent Claims (20)
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Specification