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. 29, 2023
Filed:
Jan. 27, 2021
Applicant:
Lumileds Llc, San Jose, CA (US);
Inventors:
Peter Josef Schmidt, Aachen, DE;
Oleg Borisovich Shchekin, San Francisco, CA (US);
Walter Mayr, Aachen, DE;
Hans-Helmut Bechtel, Aachen, DE;
Danielle Chamberlin, Belmont, CA (US);
Regina Mueller-Mach, San Jose, CA (US);
Gerd Mueller, San Jose, CA (US);
Assignee:
Lumileds LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
H01L 33/508 (2013.01); H01L 33/502 (2013.01); H01L 33/504 (2013.01); H01L 33/501 (2013.01);
Abstract
In a method according to embodiments of the invention, for a predetermined amount of light produced by a light emitting diode and converted by a phosphor layer comprising a host material and a dopant, and for a predetermined maximum reduction in efficiency of the phosphor at increasing excitation density, a maximum dopant concentration of the phosphor layer is selected.