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:
Jul. 16, 2013
Filed:
Jun. 04, 2010
Applicants:
Hideyuki Emoto, Machida, JP;
Toshiaki Nagumo, Machida, JP;
Inventors:
Hideyuki Emoto, Machida, JP;
Toshiaki Nagumo, Machida, JP;
Assignee:
Denki Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01);
U.S. Cl.
CPC ...
Abstract
An Eu-activated β-sialon phosphor showing a high luminance, the use thereof and the method of producing the same. The β-sialon phosphor includes, as a matrix, a β-sialon crystal represented by a general formula: SiAlON(0<z<4.2), wherein Eu, which serves as an activator, is solid-soluted in the β-sialon crystal, and the ratio of Eu/(Eu+Eu) is 0.8 or more. It is preferred that the amount of Eu in the solid solution is 0.1 to 1 mass % with respect to the mass of the β-sialon crystal.