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. 19, 2018
Filed:
Aug. 02, 2016
Applicant:
Samsung Electronics Co., Ltd., Suwon-si, KR;
Inventors:
Assignee:
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01); H01L 33/50 (2010.01); C09K 11/77 (2006.01); C09K 11/08 (2006.01); H01L 33/44 (2010.01);
U.S. Cl.
CPC ...
H01L 33/502 (2013.01); C09K 11/0883 (2013.01); C09K 11/7734 (2013.01); H01L 33/44 (2013.01); H01L 33/501 (2013.01); H01L 33/504 (2013.01); H01L 2224/48091 (2013.01); H01L 2224/48247 (2013.01); H01L 2224/48257 (2013.01); H01L 2924/181 (2013.01); Y02B 20/181 (2013.01);
Abstract
A red phosphor contains a nitride having a formula of SrMgSiN:Eu, in which x, y, z, and w satisfy the relationships 0.5≤x≤2, 2.5≤y≤3.5, 0.5≤z≤1.5 and 0<w≤0.1. The red phosphor is configured to emit light having a peak wavelength in a range of from 610 nm to 625 nm when irradiated by an excitation source, and the excitation source may be a blue light source having a dominant wavelength in a range of 420 nm to 470 nm. In such a case, the spectrum of the emitted light has a full-width at half-maximum (FWHM) less than or equal to 55 nm.