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:
Mar. 19, 2024
Filed:
Mar. 19, 2019
Applicant:
Denka Company Limited, Tokyo, JP;
Inventors:
Yusuke Takeda, Fukuoka, JP;
Tomohiro Nomiyama, Fukuoka, JP;
Marina Takamura, Fukuoka, JP;
Shintaro Watanabe, Fukuoka, JP;
Assignee:
DENKA COMPANY LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/77 (2006.01); C01B 21/06 (2006.01); C09K 11/08 (2006.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
C09K 11/77348 (2021.01); C01B 21/0602 (2013.01); C09K 11/0883 (2013.01); H01L 33/502 (2013.01); C01P 2006/11 (2013.01);
Abstract
A red phosphor represented by general formula: MSiAlN, wherein M is at least one or more elements selected from Mg, Ca, Sr and Ba, and is partially replaced with Eu and has, as a host crystal, a crystal structure identical to that of a CaAlSiNcrystal phase, and the phosphor has a bulk density of 0.70 g/cmor more and 2.30 g/cmor less. There is also provided a light-emitting element including the red phosphor and a semiconductor light-emitting element capable of exciting the red phosphor.