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:
Dec. 17, 2019
Filed:
Aug. 27, 2018
Applicant:
Denka Company Limited, Tokyo, JP;
Inventors:
Shunsuke Mitani, Omuta, JP;
Masayoshi Ichikawa, Omuta, JP;
Assignee:
DENKA COMPANY LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01); C09K 11/61 (2006.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
C09K 11/617 (2013.01); H01L 33/502 (2013.01);
Abstract
Provided is a fluoride phosphor having a composition represented by the general formula (1):ASiF:Mn  (1)in which A represents at least one alkali metal comprising at least K. The fluoride phosphor has a ratio (A1/A2) of an area (A1) of a spectrum in a range of from 637 eV or more to less than 645 eV in XPS measurement to an area (A2) of a spectrum in a range of from 682.8 eV or more to less than 690 eV in XPS measurement, of 0.0008 to 0.0025.