Light Emitting Device Including Luminescent Ceramic and Light-Scattering Material
First Claim
1. A device comprising:
- a semiconductor structure comprising a light emitting region disposed between an n-type region and a p-type region;
a ceramic body comprising a wavelength converting material, the ceramic body being disposed in a path of light emitted by the light emitting region; and
a layer of transparent material disposed in a path of light emitted by the light emitting region, wherein a plurality of particles configured to scatter light emitted by the light emitting region are disposed in the layer of transparent material.
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Accused Products
Abstract
A ceramic body comprising a wavelength converting material is disposed in the path of light emitted by the light emitting region of a semiconductor structure comprising a light emitting region disposed between an n-type region and a p-type region. A layer of transparent material is also disposed in the path of light emitted by the light emitting region. The transparent material may connect the ceramic body to the semiconductor structure. Particles configured to scatter light emitted by the light emitting region are disposed in the layer of adhesive material. In some embodiments the particles are phosphor; in some embodiments the particles are not a wavelength-converting material.
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Citations
22 Claims
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1. A device comprising:
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a semiconductor structure comprising a light emitting region disposed between an n-type region and a p-type region; a ceramic body comprising a wavelength converting material, the ceramic body being disposed in a path of light emitted by the light emitting region; and a layer of transparent material disposed in a path of light emitted by the light emitting region, wherein a plurality of particles configured to scatter light emitted by the light emitting region are disposed in the layer of transparent material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device comprising:
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a semiconductor structure comprising a light emitting region disposed between an n-type region and a p-type region; a ceramic body comprising a first wavelength converting material, the ceramic body being disposed in a path of light emitted by the light emitting region; and a layer of transparent material disposed in a path of light emitted by the light emitting region, wherein a plurality of particles of a second wavelength converting material are disposed in the layer of transparent material. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification