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. 22, 2015
Filed:
Mar. 04, 2013
Hong Luo, San Jose, CA (US);
Shiyong Zhang, Acton, MA (US);
Yiming Zhang, San Jose, CA (US);
OSRAM SYLVANIA Inc., Danvers, MA (US);
Abstract
A lighting deviceincludes a light source, a first phosphor layerdisposed directly or indirectly on top of the light source, a first quantum dots layerdisposed directly on top of the first phosphor layer, and a second phosphor layerdisposed directly on top of the first quantum dots layer. The first quantum dots layerincludes a population of quantum dotsdispersed in a first matrix material. Each of the first and second phosphor layersincludes a population of conventional phosphor particles. Another embodiment is a lighting devicethat includes a light sourceand a wavelength-shifting phosphor layerdisposed on top of the light source. The wavelength-shifting phosphor layerincludes a population of quantum dotsand a population of phosphor particlesboth dispersed in a matrix material
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile