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. 03, 2017
Filed:
May. 26, 2014
Applicant:
Ube Industries, Ltd., Ube-shi, JP;
Inventors:
Mao Sumino, Ube, JP;
Takuma Sakai, Ube, JP;
Kazuki Iwashita, Ube, JP;
Masataka Fujinaga, Ube, JP;
Shinsuke Jida, Ube, JP;
Assignee:
Ube Industries, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/77 (2006.01); C09K 11/08 (2006.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
C09K 11/7792 (2013.01); C09K 11/0883 (2013.01); H01L 33/502 (2013.01); H01L 2224/48095 (2013.01); H01L 2224/48472 (2013.01); H01L 2924/181 (2013.01);
Abstract
An oxynitride phosphor powder is an α-SiAlON phosphor having a dominant wavelength of 565-577 nm and fluorescence intensity and external quantum efficiency that are high enough for practical use. The oxynitride phosphor powder comprises an α-SiAlON represented by the compositional formula: CaEuYbSiAlON(wherein 0.0<x1≦2.0, 0.0000<x2≦0.0100, 0.0000<x3≦0.0100, 0.4≦x2/x3≦1.4, 1.0≦y≦4.0, 0.5≦z≦2.0).