Title:
COMPLEX METAL OXIDE, PHOSPHOR , PHOSPHOR PASTE AND LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/062889
Kind Code:
A1
Abstract:
Disclosed is a complex metal oxide which enables to obtain a phosphor exhibiting higher emission luminance. Also disclosed are a phosphor containing such a complex metal oxide, a phosphor paste and a light-emitting device. The complex metal oxide contains the following (1), (2) and (3) as metal elements: (1) an alkaline earth metal element selected from Ba, Ca and Mg; (2) aluminum (Al); and (3) at least one element (M) selected from rare earth elements and manganese. In this connection, when the molar ratio of Ba:Ca:Mg:Al:M is expressed as a:b:c:d:e, the following relations are satisfied: 0.3 ≤ a ≤ 8, 0 ≤ b < 12.5, 0 ≤ c < 12.5, 11 ≤ a + b + c ≤ 13, 13 ≤ d ≤ 15, 0.0001 ≤ e ≤ 1.0.
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Inventors:
KUZE SATORU (JP)
NAKAMURA YOSHIKO (JP)
NAKAMURA YOSHIKO (JP)
Application Number:
PCT/JP2007/072706
Publication Date:
May 29, 2008
Filing Date:
November 19, 2007
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
KUZE SATORU (JP)
NAKAMURA YOSHIKO (JP)
KUZE SATORU (JP)
NAKAMURA YOSHIKO (JP)
International Classes:
C01F7/02; C01F7/16; C01F17/00; C09K11/02; C09K11/64; H01J1/63; H01J11/22; H01J11/24; H01J11/34; H01J11/42; H01J29/20; H01J31/12; H01J61/44; H01L33/48; H01L33/50
Foreign References:
| JP2004300261A | 2004-10-28 | |||
| JP2001220582A | 2001-08-14 | |||
| JP2003238951A | 2003-08-27 | |||
| JP2005002149A | 2005-01-06 | |||
| JPH0920887A | 1997-01-21 | |||
| JP2007077283A | 2007-03-29 |
Attorney, Agent or Firm:
ENOMOTO, Masayuki et al. (Intellectual Property Service Limited,5-33, Kitahama 4-chome,Chuo-ku, Osaka-shi, Osaka 50, JP)
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