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:
Apr. 10, 2012
Filed:
Jan. 31, 2008
Peter J. Schmidt, Aachen, DE;
Walter Mayr, Alsdorf, DE;
Joerg Meyer, Aachen, DE;
Wolfgang Schnick, Gauting, DE;
Cora Sieglinde Hecht, Ebersberg, DE;
Florian Stadler, Geretsried, DE;
Peter J. Schmidt, Aachen, DE;
Walter Mayr, Alsdorf, DE;
Joerg Meyer, Aachen, DE;
Wolfgang Schnick, Gauting, DE;
Cora Sieglinde Hecht, Ebersberg, DE;
Florian Stadler, Geretsried, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to an improved red light emitting material of the formula MASiNO:RE whereby M is selected out of the group comprising Ba, Sr, Ca, Mg or mixtures thereof, A is selected out of the group comprising Al, Ga, B or mixtures thereof, RE is selected out of the group comprising rare earth metals, Y, La, Sc or mixtures thereof and x is ≧0 and ≦1 and y is ≧0 and ≦0.2. This material is believed to crystallize in a novel structure type that comprises two individual lattice sites for rare 10 earth metal incorporation, which leads to an improved lighting behavior.