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:
Jul. 01, 2014
Filed:
Jun. 29, 2012
Applicants:
Yi Zheng, Lynnfield, MA (US);
Nathan Zink, North Andover, MA (US);
Victor Perez, Lawrence, MA (US);
Inventors:
Assignee:
Osram Sylvania Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/62 (2006.01); H01J 63/04 (2006.01); C04B 35/44 (2006.01); C09K 11/77 (2006.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
C09K 11/7774 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/764 (2013.01); C04B 2235/9661 (2013.01); C04B 2235/656 (2013.01); C04B 2235/6582 (2013.01); C04B 35/44 (2013.01); C04B 2235/3229 (2013.01); C04B 2235/6588 (2013.01); C04B 2235/9653 (2013.01); H01L 33/502 (2013.01); C04B 2235/3224 (2013.01);
Abstract
There is herein described a phosphor for use in white pc-LED applications. The phosphor has a composition represented by (YGdCe)(AlSc)Owherein 0<x≦0.3, 0<y≦0.04 and 0<z≦0.3. White pc-LEDs containing the phosphor exhibit less sensitivity to variations in the blue emission of LED dies than pc-LEDs containing conventional YAG:Ce and YGdAG:Ce phosphors. The phosphor may used in multiple pc-LED configurations including as a sintered ceramic converter or applied as a powder dispersed in a silicone encapsulant.