WAVELENGTH-CONVERTED SEMICONDUCTOR LIGHT EMITTING DEVICE
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Accused Products
Abstract
A material such as a phosphor is optically coupled to a semiconductor structure including a light emitting region disposed between an n-type region and a p-type region, in order to efficiently extract light from the light emitting region into the phosphor. The phosphor may be phosphor grains in direct contact with a surface of the semiconductor structure, or a ceramic phosphor bonded to the semiconductor structure, or to a thin nucleation structure on which the semiconductor structure may be grown. The phosphor is preferably highly absorbent and highly efficient. When the semiconductor structure emits light into such a highly efficient, highly absorbent phosphor, the phosphor may efficiently extract light from the structure, reducing the optical losses present in prior art devices.
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Citations
18 Claims
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1-12. -12. (canceled)
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13. A structure comprising:
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a ceramic body; and a nucleation structure thinner than one hundred microns; and a bonded interface that connects the ceramic body to the nucleation structure, the bonded interface being disposed between the ceramic body and the nucleation layer;
wherein;the nucleation structure is configured such that an epitaxial structure may be grown on the nucleation structure; and any separation between the ceramic body and the nucleation structure is less than one hundred microns. - View Dependent Claims (14, 15, 16)
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17. A structure comprising:
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a package element; a ceramic body; and a semiconductor structure disposed between and connected to the ceramic body and the package element, the semiconductor structure comprising a light emitting region disposed between an n-type region and a p-type region, the light emitting region being configured to emit light of the first peak wavelength; wherein the package element is separated from the ceramic body by less than one hundred microns and the package element has a lateral extent exceeding a lateral extent of the semiconductor structure. - View Dependent Claims (18)
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Specification