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:
Mar. 30, 2021
Filed:
Sep. 19, 2016
Osram Opto Semiconductors Gmbh, Regensburg, DE;
Yi Zheng, Lynnfield, MA (US);
Sonja Tragl, Augsburg, DE;
Juliane Kechele, Stadtbergen, DE;
Johanna Strube-Knyrim, Weil, DE;
Madis Raukas, Lexington, MA (US);
Stefan Lange, Augsburg, DE;
Daniel Bichler, Augsburg, DE;
Osram Oled GmbH, Regensburg, DE;
Abstract
Wavelength converters including coarse particles/grains of a red nitride phosphor are disclosed. In some embodiments the red nitride phosphor is a (Ca,Sr,Ba)SiN:Eu phosphor with a D50 grain size or a D50 particle size that is ≥5 microns. The red nitride phosphor may be encapsulated within an organic matrix or present in an inorganic matrix. In the latter case, the inorganic matrix may include fine grains with a D50 grain size <5 microns. Methods of making such wavelength converters and devices including such wavelength converters are also described.