Semiconductor light-emitting device
AssigneeHuga Optotech Inc.
InventorsCHIH CHING CHENG, TZONG-LIANG TSAI, SHU HUI LIN
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Abstract
A semiconductor light-emitting device comprises a substrate, a first conductive type semiconductor layer positioned on the substrate, a light-emitting structure positioned on the first conductive type semiconductor layer, and a second conductive type semiconductor layer positioned on the light-emitting structure. The substrate includes an upper surface and a plurality of protrusions positioned on the upper surface. Each of the protrusions includes a top surface, a plurality of wall surfaces, and a plurality of inclined surfaces sandwiched between the top surface and the wall surfaces.
Claims23
A semiconductor light-emitting device, comprising:
- a substrate including an upper surface and a plurality of protrusions positioned on the upper surface, wherein each of the protrusions includes a top surface, a plurality of wall surfaces, a plurality of inclined surfaces sandwiched between the top surface and the wall surfaces, and each of inclined surfaces is between two of the wall surfaces;
- a first conductive type semiconductor layer positioned on the substrate;
- a light-emitting structure positioned on the first conductive type semiconductor layer;
- and
- a second conductive type semiconductor layer positioned on the light-emitting structure.
A semiconductor light-emitting device, comprising:
- a substrate including an upper surface and a plurality of protrusions positioned on the upper surface, wherein each of the protrusions includes a ridge portion having a plurality of branches, a plurality of wall surfaces, and a plurality of inclined surfaces positioned on free ends of the branches, with the free ends being adjacent to the upper surface;
- a first conductive type semiconductor layer positioned on the substrate;
- a light-emitting structure positioned on the first conductive type semiconductor layer;
- and
- a second conductive type semiconductor layer positioned on the light-emitting structure.
Dependencies are inferred from the claim text.