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:
Jun. 23, 2015
Filed:
Nov. 30, 2012
Naoto Hirosaki, Ibaraki, JP;
Takashi Takeda, Ibaraki, JP;
Shiro Funahashi, Ibaraki, JP;
National Institute For Materials Science, Tsukuba-shi, JP;
Abstract
Provided is a chemically-thermally stable phosphor having different emission characteristics from the conventional and exhibiting high emission intensity with an LED of 470 nm or less. A phosphor of the present invention includes an inorganic crystal of a crystal represented by SrSiAlON, another inorganic crystal represented by A(D,E)Xand having the same crystal structure as SrSiAlON, and/or a solid-solution crystal thereof, all with M (one or more kinds of elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb) being solid-solved, wherein A is one or more kinds selected from Mg, Ca, Sr and Ba; D is one or more kinds selected from Si, Ge, Sn, Ti, Zr and Hf; E is one or more kinds selected from B, Al, Ga, In, Sc, Y and La; and X is one or more kinds selected from O, N and F.