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:
Oct. 20, 2015
Filed:
Feb. 22, 2012
Haruka Shimizu, Ageo, JP;
Masaaki Inamura, Ageo, JP;
Asuka Sasakura, Ageo, JP;
Akinori Kumagai, Ageo, JP;
Haruka Shimizu, Ageo, JP;
Masaaki Inamura, Ageo, JP;
Asuka Sasakura, Ageo, JP;
Akinori Kumagai, Ageo, JP;
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Abstract
A highly reliable light-emitting device is provided, which is capable of effectively suppressing detrimental effects of sulfuric gas. A light-emitting device comprising a solid light-emitting element, a metal memberreacting with sulfuric gas and a phosphor-containing layerthat contains a phosphor, the phosphor-containing layercontaining a sulfuric gas-adsorbing substancethat adsorbs sulfuric gas, and, when the phosphor-containing layeris tripartitioned from the side near the metal member to far into a proximal layer portion, an intermediate layer portion and an outer layer portion, the concentration of sulfuric gas-adsorbing substancein the proximal layer portion is made to be higher than those for the intermediate layer portion and the outer layer portion.