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US 8,283,868 B2Granted
LED light engine
AssigneeAmerican Bright Lighting, Inc.
InventorsGeorge Lee, Arthur Young, John Yang
Life of this patent
Estimating the term…
Abstract
An integrated Light Emitting Diode (LED) device including multiple LEDs connected to a circuit board, integrated circuit (IC) drivers connected to the circuit board, and a first alternating current (AC) terminal and a second AC terminal connected to the circuit board.
Claims19
An integrated Light Emitting Diode (LED) device comprising:
- a plurality of LEDs coupled to a circuit board;
- a first alternating current (AC) terminal and a second AC terminal coupled to the circuit board, the first and second AC terminals connected directly to a line voltage without an external power supply;
- one or more constant current sources connected to the first AC terminal and providing constant current to the plurality of LEDs over a range of voltage;
- and
- at least one total harmonic distortion of current (THDi) circuit.
2 more elements
A Light Emitting Diode (LED) system comprising:
- a plurality of integrated circuit (IC) boards coupled to one another, each of the plurality of IC boards comprising:
- a plurality of LEDs coupled to each IC board;
- a first pair of alternating current (AC) terminals and a second pair of AC terminals coupled to each IC board, the first and second AC terminals connected directly to a line voltage without an external power supply;
- and,
- one or more constant current sources connected to the first AC terminal and providing constant current to the plurality of LEDs over a range of voltage, wherein:
- a second pair of AC terminals of a first IC board couples with a first pair of AC terminals of a second IC board;
- each IC board further comprising at least one total harmonic distortion of current (THDi) circuit.
4 more elements
A Light Emitting Diode (LED) driving method comprising:
- providing a circuit board;
- integrating a plurality of LEDs to the circuit board;
- integrating a first alternating current (AC) terminal and a second AC terminal coupled to the circuit board, the first and second AC terminals connected directly to a line voltage without an external power supply;
- integrating one or more constant current sources connected to the first AC terminal and providing constant current to the plurality of LEDs over a range of voltage;
- wire bonding the LEDs and the constant current sources;
- coupling the circuit board to an AC line voltage source;
- and,
- coupling at least one total harmonic distortion of current (THDi) circuit to the circuit board.
5 more elements
Dependencies are inferred from the claim text.