Invention Grant
- Patent Title: Phosphor composition and method for producing the same, and light-emitting device using the same
- Patent Title (中): 荧光体组合物及其制造方法以及使用其的发光装置
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Application No.: US12099511Application Date: 2008-04-08
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Publication No.: US08221649B2Publication Date: 2012-07-17
- Inventor: Shozo Oshio
- Applicant: Shozo Oshio
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2004-131770 20040427; JP2004-182797 20040621; JP2004-194196 20040630; JP2004-250739 20040830; JP2004-363534 20041215
- Main IPC: H01L33/00
- IPC: H01L33/00
Abstract:
A light-emitting device is produced using a phosphor composition containing a phosphor host having as a main component a composition represented by a composition formula: aM3N2.bAlN.cSi3N4, where “M” is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn, and “a”, “b”, and “c” are numerical values satisfying 0.2≦a/(a+b)≦0.95, 0.05≦b/(b+c)≦0.8, and 0.4≦c/(c+a)≦0.95. This enables a light-emitting device emitting white light and satisfying both a high color rendering property and a high luminous flux to be provided.
Public/Granted literature
- US20080211389A1 PHOSPHOR COMPOSITION AND METHOD FOR PRODUCING THE SAME, AND LIGHT-EMITTING DEVICE USING THE SAME Public/Granted day:2008-09-04
Information query
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