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:
Aug. 09, 2016
Filed:
Apr. 17, 2015
Applicant:
Cree, Inc., Durham, NC (US);
Inventors:
Thomas Place, Franklinton, NC (US);
Bennett Dean Langsdorf, Cary, NC (US);
Assignee:
CREE, INC., Durham, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 31/0256 (2006.01); H01L 33/38 (2010.01); H01L 33/08 (2010.01);
U.S. Cl.
CPC ...
H01L 33/382 (2013.01); H01L 33/08 (2013.01);
Abstract
The present disclosure provides various embodiments of light emitting chips and packages with improved current spreading structures, such as non-uniform via structures or varied via structures. In some embodiments, these structures may be used to regulate current flow and current crowding in order to improve emitter efficiency and uniformity. Some embodiments of this disclosure may also refer to contact pad placement to improve current flow. In some embodiments of non-uniform via structures, the size of the vias may vary, whereas in other embodiments, the shape or spacing between the vias may vary.