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:
Jan. 26, 2021
Filed:
Mar. 08, 2019
Applicant:
Nichia Corporation, Anan, JP;
Inventors:
Assignee:
NICHIA CORPORATION, Anan, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); G02F 1/13357 (2006.01); C09K 11/77 (2006.01); C09K 11/08 (2006.01); C09K 11/64 (2006.01); H01L 33/32 (2010.01); H01L 33/48 (2010.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); C09K 11/0883 (2013.01); C09K 11/643 (2013.01); C09K 11/7731 (2013.01); C09K 11/7734 (2013.01); G02F 1/1336 (2013.01); H01L 33/32 (2013.01); H01L 33/507 (2013.01); H01L 33/508 (2013.01); H01L 33/486 (2013.01); H01L 2933/0091 (2013.01);
Abstract
Provided is a light-emitting device including a light-emitting element having a peak emission wavelength in a range of from 400 nm to 470 nm, and a fluorescent member including a first fluorescent material including an aluminate that contains Mg, Mn, and at least one alkali earth metal selected from the group consisting of Ba, Sr, and Ca, a second fluorescent material having a different composition from the first fluorescent material, and a third fluorescent material. The first, second and third fluorescent materials have a peak emission wavelength in a range of from 510 nm to 525 nm, from 510 nm to 550 nm, and from 620 nm to 670 nm, respectively.