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. 13, 2017
Filed:
Feb. 25, 2015
Denka Company Limited, Tokyo, JP;
Hideyuki Emoto, Tokyo, JP;
Shinichi Yanagi, Tokyo, JP;
Masayoshi Ichikawa, Fukuoka, JP;
Kazuhiro Ito, Tokyo, JP;
DENKA COMPANY LIMITED, Tokyo, OT, JP;
Abstract
The present invention relates to an Mn-activated complex fluoride phosphor with improved moisture resistance due to modification of the particle surface, and a light emitting element and light emitting device having excellent color rendering properties and stability due to the use of this phosphor. The phosphor of the present invention is characterized in that it is represented by the general formula: AMF:Mn, wherein element A is an alkali metal element comprising at least K, element M is one or more metal elements chosen from among Si, Ge, Sn, Ti, Zr and Hf, F is fluorine, and Mn is manganese, wherein the phosphor comprises Ca in a concentration range of at least 20 ppm and at most 10,000 ppm or Cl in a concentration range of at least 20 ppm and at most 300 ppm.