Invention Grant
- Patent Title: Light-emitting device
- Patent Title (中): 发光装置
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Application No.: US14009650Application Date: 2012-02-22
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Publication No.: US09166119B2Publication Date: 2015-10-20
- Inventor: Haruka Shimizu , Masaaki Inamura , Asuka Sasakura , Akinori Kumagai
- Applicant: Haruka Shimizu , Masaaki Inamura , Asuka Sasakura , Akinori Kumagai
- Applicant Address: JP Tokyo
- Assignee: Mitsui Mining & Smelting Co., Ltd.
- Current Assignee: Mitsui Mining & Smelting Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: The Webb Law Firm
- Priority: JP2011-083834 20110405
- International Application: PCT/JP2012/054226 WO 20120222
- International Announcement: WO2012/137552 WO 20121011
- Main IPC: H01L33/00
- IPC: H01L33/00 ; H01L33/50 ; H01L33/56

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 1, a metal member 2 reacting with sulfuric gas and a phosphor-containing layer 5 that contains a phosphor 3, the phosphor-containing layer 5 containing a sulfuric gas-adsorbing substance 4 that adsorbs sulfuric gas, and, when the phosphor-containing layer 5 is 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 substance 4 in the proximal layer portion is made to be higher than those for the intermediate layer portion and the outer layer portion.
Public/Granted literature
- US20140021502A1 Light-Emitting Device Public/Granted day:2014-01-23
Information query
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