DROOP-FREE HIGH OUTPUT LIGHT EMITTING DEVICES AND METHODS OF FABRICATING AND OPERATING SAME
First Claim
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1. A light emitting device comprising:
- a semiconductor light emitting diode that is configured to operate at a substantially droop-free quantum efficiency while producing warm white light output of at least about 100 lumens/cool white light output of at least about 130 lumens.
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Abstract
Light emitting devices include a semiconductor light emitting diode that is configured to operate at a substantially droop-free quantum efficiency while producing warm white light output of at least about 100 lumens/cool white light output of at least about 130 lumens. The semiconductor light emitting diode may include a single semiconductor die of at least about 4 mm2 in area that operates at a current density of less than about 9 A/cm2, so as to operate at the substantially droop-free quantum efficiency. Related fabricating and operating methods are also disclosed.
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17 Claims
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1. A light emitting device comprising:
a semiconductor light emitting diode that is configured to operate at a substantially droop-free quantum efficiency while producing warm white light output of at least about 100 lumens/cool white light output of at least about 130 lumens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of fabricating a light emitting device that can produce at least about 100 lumens of warm white light/at least about 130 lumens of cool white light comprising:
increasing a die size of a semiconductor light emitting diode to at least about 4 mm2 so as to reduce operating current density in the semiconductor light emitting diode to less than about 9 A/cm2 and operate the semiconductor light emitting diode at a substantially droop-free quantum efficiency. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of operating a light emitting device to produce at least about 100 lumens of warm white light/at least about 130 lumens of cool white light comprising:
reducing operating current density in a semiconductor light emitting diode having a die size of at least about 4 mm2 to less than about 9 A/cm2 so as to operate the semiconductor light emitting diode at a substantially droop-free quantum efficiency. - View Dependent Claims (16, 17)
Specification