Light Emitting Diode with Improved Light Extraction
AssigneeCree, Inc.
InventorsMatthew Donofrio, Hua-Shuang Kong, David Slater, JR., John Edmond
Life of this patent
Estimating the term…
Abstract
A light emitting diode is disclosed that includes an active region and a plurality of exterior surfaces. A light enhancement feature is present on at least portions of one of the exterior surfaces of the diode, with the light enhancement feature being selected from the group consisting of shaping and texturing. A light enhancement feature is present on at least portions of each of the other exterior surfaces of the diode, with these light enhancement features being selected from the group consisting of shaping, texturing, and reflectors.
Claims39
A light emitting diode comprising:
- a plurality of exterior surfaces;
- a light enhancement feature on at least portions of one of said exterior surfaces of said diode, said light enhancement feature being selected from the group consisting of shaping and texturing;
- a light enhancement feature on at least portions of each of the other exterior surfaces of said diode, said light enhancement features being selected from the group consisting of shaping, texturing, and reflectors;
- and
- ohmic contacts in a lateral orientation to said active region.
A light emitting diode comprising:
- a substrate;
- a Group III nitride active region formed on said substrate;
- said substrate and said Group III nitride active region defining a plurality of exterior surfaces;
- one of said exterior surfaces having a light enhancement feature selected from the group consisting of shaping and texturing;
- the remainder of said exterior surfaces having light enhancement features selected from the group consisting of shaping, texturing, and reflectors;
- and
- ohmic contacts in a lateral orientation to said active region.
A light emitting diode comprising:
- an active region having at least one n-type layer and one p-type layer;
- a plurality of exterior surfaces;
- at least four of said exterior surfaces having light enhancement features selected from the group consisting of beveled cuts, texturing, lenticular surfaces, and reflectors;
- and
- ohmic contacts in a lateral orientation to said active region.
Dependencies are inferred from the claim text.