Nitride semiconductor light-emitting device and method for fabrication thereof
First Claim
1. A nitride semiconductor light-emitting device comprising a substrate and a nitride semiconductor layer including a light-emitting layer stacked on the substrate, wherein a first normal line relative to at least a lateral face of the nitride semiconductor layer between the substrate and the light-emitting layer and a second normal line relative to a lower surface of the nitride semiconductor layer intersect to form an angle θ
- larger than 90 degrees, wherein the lateral face of the nitride semiconductor layer is an external surface of the nitride semiconductor light-emitting device, the lateral face of the nitride semiconductor layer and a lateral side of the substrate form a discontinuous face, a principal plane of the substrate abuts the lower surface of the nitride semiconductor layer, the principal plane of the substrate and the lateral face of the nitride semiconductor layer form an acute angle, the substrate is formed from a material selected from the group consisting of sapphire and silicon carbide, and the lateral face of the nitride semiconductor layer excludes a lateral face of the light-emitting layer such that the lateral faces do not share a common normal line, the lateral faces being located on a same lateral side of the nitride semiconductor light-emitting device.
2 Assignments
0 Petitions
Accused Products
Abstract
A nitride semiconductor light-emitting device includes a substrate and a nitride semiconductor layer including a light-emitting layer stacked on the substrate, wherein a normal line relative to a lateral face of the nitride semiconductor layer is not perpendicular to a normal line relative to a principal plane of the substrate. A method for the production of a nitride semiconductor light-emitting device that includes a substrate and a nitride semiconductor layer including a light-emitting layer stacked on the substrate includes the steps of covering a first surface of the nitride semiconductor layer with a mask provided with a prescribed pattern, removing the nitride semiconductor layer in regions to be divided into component devices till the substrate, subjecting the nitride semiconductor layer to wet-etching treatment and dividing the nitride semiconductor layer into the component devices.
-
Citations
20 Claims
-
1. A nitride semiconductor light-emitting device comprising a substrate and a nitride semiconductor layer including a light-emitting layer stacked on the substrate, wherein a first normal line relative to at least a lateral face of the nitride semiconductor layer between the substrate and the light-emitting layer and a second normal line relative to a lower surface of the nitride semiconductor layer intersect to form an angle θ
- larger than 90 degrees, wherein the lateral face of the nitride semiconductor layer is an external surface of the nitride semiconductor light-emitting device, the lateral face of the nitride semiconductor layer and a lateral side of the substrate form a discontinuous face, a principal plane of the substrate abuts the lower surface of the nitride semiconductor layer, the principal plane of the substrate and the lateral face of the nitride semiconductor layer form an acute angle, the substrate is formed from a material selected from the group consisting of sapphire and silicon carbide, and the lateral face of the nitride semiconductor layer excludes a lateral face of the light-emitting layer such that the lateral faces do not share a common normal line, the lateral faces being located on a same lateral side of the nitride semiconductor light-emitting device.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 19)
-
11. A nitride semiconductor light-emitting device comprising a substrate and a nitride semiconductor layer including a light-emitting layer stacked on the substrate, wherein a first normal line relative to at least a lateral face of the nitride semiconductor layer between the substrate and the light-emitting layer and a second normal line relative to a lower surface of the nitride semiconductor layer intersect to form an angle θ
- larger than 90 degrees, wherein the lateral face of the nitride semiconductor layer is an external surface of the nitride semiconductor light-emitting device, the lateral face of the nitride semiconductor layer and a lateral side of the substrate form a discontinuous face, a principal plane of the substrate abuts the lower surface of the nitride semiconductor layer, the substrate is formed from a material selected from the group consisting of sapphire and silicon carbide, and the lateral face of the nitride semiconductor layer excludes a lateral face of the light-emitting layer such that the lateral faces do not share a common normal line, the lateral faces being located on a same lateral side of the nitride semiconductor light-emitting device, and the nitride semiconductor layer has an additional lateral face adjoining the lateral face of the light-emitting layer and the lateral face of the nitride semiconductor, the additional lateral face being perpendicular to the principal plane of the substrate, and the additional lateral face, the lateral face of the light-emitting layer and the lateral face of the nitride semiconductor layer are located on the same lateral side of the nitride semiconductor light-emitting device.
- View Dependent Claims (12, 13, 14)
-
15. A method for the production of a nitride semiconductor light-emitting device comprising a substrate and a nitride semiconductor layer including a light-emitting layer stacked on the substrate, wherein a first normal line relative to at least a lateral face of the nitride semiconductor layer between the substrate and the light-emitting layer and a second normal line relative to a lower surface of the nitride semiconductor layer intersect to form an angle θ
- larger than 90 degrees, wherein the lateral face of the nitride semiconductor layer is an external surface of the nitride semiconductor light-emitting device, the lateral face of the nitride semiconductor layer and a lateral side of the substrate form a discontinuous face, a principal plane of the substrate abuts the lower surface of the nitride semiconductor layer, the principal plane of the substrate and the lateral face of the nitride semiconductor layer form an acute angle, the substrate is formed from a material selected from the group consisting of sapphire and silicon carbide, and the lateral face of the nitride semiconductor layer excludes a lateral face of the light-emitting layer such that the lateral faces do not share a common normal line, the lateral faces being located on a same lateral side of the nitride semiconductor light-emitting device, said method comprising the steps of covering a first surface of the nitride semiconductor layer with a mask provided with a prescribed pattern, removing the nitride semiconductor layer in regions to be divided into component devices, subjecting the nitride semiconductor layer to wet-etching treatment and dividing the nitride semiconductor layer into the component devices.
- View Dependent Claims (16, 17, 18, 20)
Specification