Light emitting devices with improved light extraction efficiency
First Claim
1. A device comprising:
- a first semiconductor light emitting device comprising a stack of semiconductor layers including an active region; and
an optical element bonded to the first semiconductor light emitting device;
wherein the optical element is elongated in a first direction.
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Accused Products
Abstract
A device includes a light emitting semiconductor device bonded to an optical element. In some embodiments, the optical element may be elongated or shaped to direct a portion of light emitted by the active region in a direction substantially perpendicular to a central axis of the semiconductor light emitting device and the optical element. In some embodiments, the semiconductor light emitting device and optical element are positioned in a reflector or adjacent to a light guide. The optical element may be bonded to the first semiconductor light emitting device by a bond at an interface disposed between the optical element and the semiconductor light emitting device. In some embodiments, the bond is substantially free of organic-based adhesives.
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Citations
44 Claims
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1. A device comprising:
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a first semiconductor light emitting device comprising a stack of semiconductor layers including an active region; and
an optical element bonded to the first semiconductor light emitting device;
wherein the optical element is elongated in a first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A device comprising:
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a semiconductor light emitting device comprising a stack of semiconductor layers including an active region; and
an optical element bonded to the semiconductor light emitting device;
wherein the semiconductor light emitting device and the optical element are positioned in a reflector. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A device comprising:
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a first semiconductor light emitting device comprising a stack of semiconductor layers including an active region;
an optical element bonded to the semiconductor light emitting device; and
a light guide adjacent to the optical element. - View Dependent Claims (23, 24, 25)
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26. A device comprising:
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a semiconductor light emitting device comprising a stack of semiconductor layers including an active region; and
an optical element bonded to the first semiconductor light emitting device;
wherein the optical element comprises a material selected from the group of an oxide of tellurium, aluminum oxynitride, cubic zirconia, transparent alumina, and spinel. - View Dependent Claims (27)
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28. A device comprising:
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a semiconductor light emitting device comprising a stack of semiconductor layers including an active region;
an optical element bonded to the semiconductor light emitting device; and
a bonding layer disposed between the optical element and the semiconductor light emitting device;
wherein the bonding layer comprises an oxide of tellurium. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification