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:
Oct. 10, 2023
Filed:
Dec. 06, 2021
Applicant:
Intematix Corporation, Fremont, CA (US);
Inventors:
Assignee:
Bridgelux, Inc., Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); F21K 9/232 (2016.01); H01L 25/075 (2006.01); C09K 11/77 (2006.01); C09K 11/61 (2006.01); H01L 33/60 (2010.01);
U.S. Cl.
CPC ...
F21K 9/232 (2016.08); C09K 11/617 (2013.01); C09K 11/7774 (2013.01); C09K 11/77348 (2021.01); H01L 25/0753 (2013.01); H01L 33/504 (2013.01); H01L 33/60 (2013.01); H01L 2933/0091 (2013.01);
Abstract
An LED-filament comprising: a partially light transmissive substrate; a plurality of LED chips on a front face of the substrate; a photoluminescence material that is in direct contact with and covers all of the plurality of LED chips; and a light scattering layer that is in direct contact with and covers at least the photoluminescence material, wherein the light scattering layer comprises particles of light scattering material, and wherein the photoluminescence material comprises broadband green to red photoluminescence materials and narrowband red photoluminescence material.