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:
Sep. 11, 2018
Filed:
Aug. 28, 2014
Applicant:
Cree, Inc., Durham, NC (US);
Inventors:
Robert Wilcox, Rolesville, NC (US);
Brian Thomas Collins, Holly Springs, NC (US);
Assignee:
Cree, Inc., Durham, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 33/14 (2006.01); H01L 51/54 (2006.01); H01L 33/50 (2010.01); C09K 11/08 (2006.01); C09K 11/77 (2006.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); C09K 11/0883 (2013.01); C09K 11/7734 (2013.01); H01L 33/502 (2013.01);
Abstract
A light emitting device includes a light emitting diode chip ('LED') that emits light having a dominant wavelength in the blue color range and a recipient luminophoric medium that is configured to down-convert at least some of the light emitted by the LED. The recipient luminophoric medium includes a green phosphor, a yellow phosphor, a first red phosphor having a first dominant wavelength and a second red phosphor having a second dominant wavelength that is different from the first dominant wavelength.