The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 2018
Filed:
Jul. 06, 2010
Sungsoo Yi, Sunnyvale, CA (US);
Nathan F. Gardner, Sunnyvale, CA (US);
Michael R. Krames, Los altos, CA (US);
Linda T. Romano, Sunnyvale, CA (US);
Sungsoo Yi, Sunnyvale, CA (US);
Nathan F. Gardner, Sunnyvale, CA (US);
Michael R. Krames, Los altos, CA (US);
Linda T. Romano, Sunnyvale, CA (US);
Koninklijke Phillips N.V., Eindhoven, NL;
Lumileds LLC, San Jose, CA (US);
Abstract
In accordance with embodiments of the invention, at least partial strain relief in a light emitting layer of a III-nitride light emitting device is provided by configuring the surface on which at least one layer of the device grows such that the layer expands laterally and thus at least partially relaxes. This layer is referred to as the strain-relieved layer. In some embodiments, the light emitting layer itself is the strain-relieved layer, meaning that the light emitting layer is grown on a surface that allows the light emitting layer to expand laterally to relieve strain. In some embodiments, a layer grown before the light emitting layer is the strain-relieved layer. In a first group of embodiments, the strain-relieved layer is grown on a textured surface.