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:
Sep. 10, 2019
Filed:
Nov. 21, 2017
Applicant:
Nichia Corporation, Anan-shi, Tokushima, JP;
Inventor:
Tsunehito Niimi, Anan, JP;
Assignee:
NICHIA CORPORATION, Anan-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01); C09K 11/61 (2006.01); H01L 33/50 (2010.01); C09K 11/02 (2006.01);
U.S. Cl.
CPC ...
C09K 11/617 (2013.01); C09K 11/025 (2013.01); C09K 11/616 (2013.01); H01L 33/504 (2013.01); H01L 2933/0041 (2013.01);
Abstract
Provided are a fluorescent material with excellent durability, which emits red light, a method of producing the same, and a light emitting device. The fluorescent material is a fluorescent material including a fluoride-containing fluorescent material core comprising Mn, at least one element selected from the group consisting of an alkali metal element and NH, and at least one element selected from the group consisting of a Group 4 element and a Group 14 element in a composition thereof; and at least one of an aluminum hydroxide particle and a calcium hydroxide particle as disposed on a surface of the fluorescent material core.