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:
Aug. 13, 2019
Filed:
Mar. 02, 2017
Applicants:
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
National Institute for Materials Science, Tsukuba-shi, Ibaraki, JP;
Inventors:
Kenichi Yoshimura, Sakai, JP;
Makoto Izumi, Sakai, JP;
Hiroshi Fukunaga, Sakai, JP;
Naoto Hirosaki, Tsukuba, JP;
Assignees:
SHARP KABUSHIKI KAISHA, Sakai, JP;
NATIONAL INSTITUTE FOR MATERIALS SCIENCE, Ibaraki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); C09K 11/08 (2006.01); C09K 11/61 (2006.01); C09K 11/64 (2006.01); H01L 27/15 (2006.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); C09K 11/0883 (2013.01); C09K 11/617 (2013.01); C09K 11/641 (2013.01); H01L 27/156 (2013.01);
Abstract
A light-emitting device includes a light-emitting element that emits blue light, a Mn-activated γ-AlON green phosphor, and a dispersing material in which the green phosphor is dispersed. The green phosphor has an in-crystal Mn concentration of 2.5 wt % or more. The shortest path of the blue light through the dispersing material is 1 mm long or shorter.