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:
Apr. 17, 2018
Filed:
Jun. 28, 2017
Applicant:
Nichia Corporation, Anan-shi, JP;
Inventors:
Taiki Yuasa, Tokushima, JP;
Masaki Hayashi, Anan, JP;
Assignee:
NICHIA CORPORATION, Anan-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01); H01L 33/50 (2010.01); H01L 33/60 (2010.01); H01L 33/52 (2010.01); H01L 33/32 (2010.01); H01L 27/15 (2006.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); H01L 27/15 (2013.01); H01L 33/32 (2013.01); H01L 33/507 (2013.01); H01L 33/52 (2013.01); H01L 33/60 (2013.01);
Abstract
A light emitting device includes at least one light emitting element to emit a first light having a first peak emission wavelength in a range of 420 nm to 480 nm and at least one fluorescent material to convert the first light to a second light having a second fluorescent peak wavelength in a range of 610 nm to 750 nm. The second light has chromaticity existing in an enclosed area in a CIE 1931 chromaticity diagram in which chromaticity is defined by x and y coordinates. The enclosed area is enclosed with a first straight line, a second straight line, a third straight line, and a curved line.