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. 01, 2019
Filed:
Dec. 20, 2016
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Koji Omura, Osaka, JP;
Ayako Tsukitani, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21K 9/64 (2016.01); F21V 7/04 (2006.01); F21V 9/30 (2018.01); F21V 19/00 (2006.01); F21V 23/00 (2015.01); H01L 33/50 (2010.01); F21Y 113/13 (2016.01); F21Y 113/17 (2016.01); F21Y 115/10 (2016.01); H01L 25/075 (2006.01);
U.S. Cl.
CPC ...
F21K 9/64 (2016.08); F21V 7/041 (2013.01); F21V 9/30 (2018.02); F21V 19/003 (2013.01); F21V 23/002 (2013.01); H01L 25/0753 (2013.01); F21Y 2113/13 (2016.08); F21Y 2113/17 (2016.08); F21Y 2115/10 (2016.08); H01L 33/502 (2013.01); H01L 33/504 (2013.01); H01L 2224/48137 (2013.01); H01L 2924/181 (2013.01);
Abstract
A light-emitting device includes blue LED chips having a light emission peak wavelength of at least 430 nm and at most 470 nm and red LED chips having a light emission peak wavelength of at least 600 nm and at most 640 nm. The light-emitting device includes a yellow phosphor having a light emission peak wavelength of at least 500 nm and at most 580 nm and a red phosphor having a light emission peak wavelength of at least 640 nm and at most 670 nm. The light-emitting device emits white light through mixing of light emitted by each of the blue LED chips, the red LED chips, the yellow phosphor, and the red phosphor.