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:
Jan. 25, 2022
Filed:
Aug. 31, 2018
Applicant:
Lumileds Llc, San Jose, CA (US);
Inventors:
Hans-Helmut Bechtel, Aachen, DE;
Gregoire Denis, San Jose, CA (US);
Erik Maria Roeling, Aachen, DE;
Danielle Russell Chamberlin, Belmont, CA (US);
Sumit Gangwal, San Jose, CA (US);
Assignee:
LUMILEDS LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/60 (2010.01); H01L 33/50 (2010.01); H01L 33/58 (2010.01); C09K 11/02 (2006.01); C09K 11/77 (2006.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); C09K 11/025 (2013.01); C09K 11/7734 (2013.01); H01L 33/58 (2013.01); H01L 33/60 (2013.01);
Abstract
A light emitting diode (LED) device may include an LED die having a first surface on a substrate. A first phosphor layer may be formed on a second surface and sides of the LED die. The second surface may be opposite the first surface. A second phosphor layer may be formed on the first phosphor layer. The second phosphor layer may have a peak emission wavelength (L2) located between a peak emission wavelength of the LED die (LD) and a peak emission wavelength of the first phosphor layer (L2).