Title:
PHOSPHOR, PHOSPHOR PASTE AND LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/018575
Kind Code:
A1
Abstract:
Disclosed is a phosphor which enables to obtain a phosphor layer having high luminance even after irradiation time of an excitation source ends. Specifically disclosed is a phosphor containing a first fluorescent material, which is obtained by adding an activator (activator 1) into the base material composed of a compound represented by the formula (1) below, and a second fluorescent material, which is obtained by adding an activator (activator 2) into the base material composed of a compound represented by the formula (2) below. mM11O⋅nM21O⋅2M31O2 (1) pM12O⋅qM22O⋅2M32O2 (2) In the formulae, M11 and M12 independently represent at least one element selected from the group consisting of Ca, Sr and Ba; M21 and M22 independently represent at least one element selected from the group consisting of Mg and Zn; M31 and M32 independently represent at least one element selected from the group consisting of Si and Ge; m is not less than 2.5 but not more than 3.5; n is not less than 0.5 but not more than 1.5; p is not less than 0.5 but not more than 1.5; and q is not less than 0.5 but not more than 1.5.
Inventors:
KUZE SATORU (JP)
NAKAMURA YOSHIKO (JP)
NAKAMURA YOSHIKO (JP)
Application Number:
PCT/JP2007/065675
Publication Date:
February 14, 2008
Filing Date:
August 03, 2007
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
KUZE SATORU (JP)
NAKAMURA YOSHIKO (JP)
KUZE SATORU (JP)
NAKAMURA YOSHIKO (JP)
International Classes:
C09K11/08; C09K11/02; C09K11/59; C09K11/66; H01J1/63; H01J29/20; H01J31/12; H01J31/15; H01J61/44
Foreign References:
| JP2003206480A | 2003-07-22 | |||
| JP2002332481A | 2002-11-22 | |||
| JP2006169526A | 2006-06-29 | |||
| JP2003132803A | 2003-05-09 |
Attorney, Agent or Firm:
ENOMOTO, Masayuki et al. (Limited5-33, Kitahama 4-chome,Chuo-ku, Osaka-shi, Osaka, JP)
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