Light-emitting devices and methods of manufacturing the same
First Claim
Patent Images
1. A light-emitting device, comprising:
- a light-emitting structure, the light-emitting structure includinga first-conductivity-type nitride semiconductor layer on a substrate,an active layer on the first-conductivity-type nitride semiconductor layer, anda second-conductivity-type nitride semiconductor layer on the active layer;
a buffer layer between the substrate and the light-emitting structure, the buffer layer includinga plurality of voids, the plurality of voids extending vertically into the buffer layer from a surface of the buffer layer, the surface proximate to the light-emitting structure, the plurality of voids having different horizontal sectional areas; and
a mask layer between the buffer layer and the light-emitting structure, the mask layer including a plurality of openings.
1 Assignment
0 Petitions
Accused Products
Abstract
A light-emitting device includes a light-emitting structure including a first-conductivity-type nitride semiconductor layer on a substrate, an active layer on the first-conductivity-type nitride semiconductor layer, and a second-conductivity-type nitride semiconductor layer on the active layer, and a buffer layer between the substrate and the light-emitting structure. The buffer layer includes a plurality of voids. The plurality of voids extend vertically into the buffer layer from a surface of the buffer layer. The surface of the buffer layer is proximate to the light-emitting structure. The plurality of voids have different horizontal sectional areas.
47 Citations
19 Claims
-
1. A light-emitting device, comprising:
-
a light-emitting structure, the light-emitting structure including a first-conductivity-type nitride semiconductor layer on a substrate, an active layer on the first-conductivity-type nitride semiconductor layer, and a second-conductivity-type nitride semiconductor layer on the active layer; a buffer layer between the substrate and the light-emitting structure, the buffer layer including a plurality of voids, the plurality of voids extending vertically into the buffer layer from a surface of the buffer layer, the surface proximate to the light-emitting structure, the plurality of voids having different horizontal sectional areas; and a mask layer between the buffer layer and the light-emitting structure, the mask layer including a plurality of openings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A light-emitting device comprising:
-
a light-emitting structure, the light-emitting structure including a first-conductivity-type nitride semiconductor layer on a substrate, an active layer on the first-conductivity-type nitride semiconductor layer, and a second-conductivity-type nitride semiconductor layer on the active layer; a buffer layer between the substrate and the light-emitting structure, the buffer layer including a plurality of voids, the plurality of voids extending vertically into the buffer layer from a surface of the buffer layer, the surface proximate to the light-emitting structure; and a mask layer between the buffer layer and the light-emitting structure, the mask layer including a plurality of openings, each opening of the plurality of openings having a horizontal sectional shape that is a substantially circular shape. - View Dependent Claims (14, 15)
-
-
16. A light-emitting device comprising:
-
a light-emitting structure on a light-transmissive substrate, the light-emitting structure including a first-conductivity-type nitride semiconductor layer, an active layer, and a second-conductivity-type nitride semiconductor layer; a buffer layer between the light-transmissive substrate and the light-emitting structure, the buffer layer including a plurality of voids, the plurality of voids extending vertically into the buffer layer from a surface of the buffer layer, the surface proximate to the light-emitting structure, the plurality of voids having different horizontal sectional areas; a first electrode on the first-conductivity-type nitride semiconductor layer, the first electrode coupled to the first-conductivity-type nitride semiconductor layer; a second electrode on the second-conductivity-type nitride semiconductor layer, the second electrode coupled to the second-conductivity-type nitride semiconductor layer; and a mask layer between the buffer layer and the light-emitting structure, the mask layer including a plurality of openings. - View Dependent Claims (17, 18, 19)
-
Specification