LIGHT-EMITTING DEVICE
First Claim
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1. A light-emitting device, comprising:
- a substrate;
a semiconductor stack capable of emitting a light;
a first reflecting structure between the substrate and the semiconductor stack to reflect the light; and
a second reflecting structure between the substrate and the semiconductor stack, wherein the first reflecting structure has a maximum reflectivity when the light is incident to the first reflecting structure at a first incident angle, the second reflecting structure has a maximum reflectivity when the light incident to the second reflecting structure at a second incident angle, and the second incident angle is larger than the first incident angle.
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Abstract
A light-emitting device comprising a substrate; a semiconductor stack capable of emitting a light; a first reflecting structure between the substrate and the semiconductor stack to reflect the light; and a second reflecting structure between the substrate and the semiconductor stack, wherein the first reflecting structure has a maximum reflectivity when the light is incident to the first reflecting structure at a first incident angle, the second reflecting structure has a maximum reflectivity when the light is incident to the second reflecting structure at a second incident angle.
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Citations
20 Claims
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1. A light-emitting device, comprising:
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a substrate; a semiconductor stack capable of emitting a light; a first reflecting structure between the substrate and the semiconductor stack to reflect the light; and a second reflecting structure between the substrate and the semiconductor stack, wherein the first reflecting structure has a maximum reflectivity when the light is incident to the first reflecting structure at a first incident angle, the second reflecting structure has a maximum reflectivity when the light incident to the second reflecting structure at a second incident angle, and the second incident angle is larger than the first incident angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A light-emitting device, comprising:
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a substrate; a semiconductor stack capable of emitting a light having a dominant wavelength; a first reflecting structure between the substrate and the semiconductor stack, wherein the first reflecting structure has a first maximum reflectivity to the dominant wavelength normally incident to the first reflecting structure; and a second reflecting structure between the substrate and the semiconductor stack, wherein the second reflecting structure comprises a second maximum reflectivity to a reference wavelength incident normally to the second reflecting structure and to the dominant wavelength obliquely incident to the second reflecting structure. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification