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. 25, 2017
Filed:
Dec. 19, 2013
Applicant:
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Inventors:
Kenichi Yoshimura, Osaka, JP;
Hiroshi Fukunaga, Osaka, JP;
Masamichi Harada, Osaka, JP;
Kohsei Takahashi, Osaka, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01); H01L 21/00 (2006.01); C09K 11/77 (2006.01); H01L 33/56 (2010.01); C09K 11/02 (2006.01); H01L 33/50 (2010.01); C09K 11/08 (2006.01);
U.S. Cl.
CPC ...
C09K 11/7734 (2013.01); C09K 11/02 (2013.01); C09K 11/0883 (2013.01); H01L 33/502 (2013.01); H01L 33/56 (2013.01); H01L 2224/48091 (2013.01); H01L 2224/73265 (2013.01); H01L 2933/0091 (2013.01);
Abstract
In a light-emitting device, a 50%-area average diameter of primary particles of a Eu-activated β SiAlON fluorescent material is 10 μm or more, a scattering probability of scattering materials at a peak wavelength of excitation light emitted from an excitation light source is 0.1 mmor more and 0.5 mmor less, and the Eu-activated β SiAlON fluorescent material is entrapped inside a transparent member in a dispersed state together with the scattering materials.