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. 28, 2017
Filed:
Mar. 26, 2013
Applicant:
Ube Material Industries, Ltd., Ube-shi, Yamaguchi, JP;
Inventors:
Assignees:
UBE MATERIAL INDUSTRIES, LTD., Ube-Shi, Yamaguchi, JP;
UBE INDUSTRIES, LTD., Ube-Shi, Yamaguchi, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); C09K 11/66 (2006.01);
U.S. Cl.
CPC ...
C09K 11/665 (2013.01); C09K 11/663 (2013.01); H01L 33/502 (2013.01); H01L 2224/48091 (2013.01); H01L 2224/73265 (2013.01);
Abstract
The deep red light-emitting magnesium fluorogermanate phosphor prepared by calcining a mixture comprising a fine magnesium oxide powder having a BET specific surface area in the range of 5-200 m/g, a fluorine compound, a germanium compound and a manganese compound gives a light emission having a maximum peak of increased strength in the wavelength region of 640-680 nm upon excitation with a light having a wavelength of 400 nm.