High-efficiency light-emitting device and manufacturing method thereof
First Claim
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1. A high-efficiency light-emitting device comprising:
- a substrate;
a first semiconductor layer formed on the substrate;
an active layer formed on the first semiconductor layer; and
a second semiconductor formed on the active layer having a first surface composed of a first lower region and a first higher region wherein the first surface is away from the active layer and wherein a roughness of the first lower region is less than that of the first higher region.
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Abstract
This invention provides a high-efficiency light-emitting device and the manufacturing method thereof. The high-efficiency light-emitting device includes a substrate; a reflective layer; a bonding layer; a first semiconductor layer; an active layer; and a second semiconductor layer formed on the active layer. The second semiconductor layer includes a first surface having a first lower region and a first higher region.
32 Citations
30 Claims
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1. A high-efficiency light-emitting device comprising:
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a substrate; a first semiconductor layer formed on the substrate; an active layer formed on the first semiconductor layer; and a second semiconductor formed on the active layer having a first surface composed of a first lower region and a first higher region wherein the first surface is away from the active layer and wherein a roughness of the first lower region is less than that of the first higher region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of manufacturing the high-efficiency light-emitting device comprising the steps of:
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providing a substrate; forming a first semiconductor layer on the substrate; forming an active layer on the first semiconductor layer; forming a second semiconductor layer having a first surface on the active layer wherein the first surface is away from the active layer; and forming a first lower region and a first higher region on the first surface wherein a roughness of the first lower region is less than that of the first higher region. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification