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Title:
PHOSPHOR AND LIGHT EMISSION APPLIANCE USING PHOSPHOR
Document Type and Number:
WIPO Patent Application WO/2005/052087
Kind Code:
A1
Abstract:
A solid solution crystal phase phosphor which comprises an inorganic compound having a crystal structure being the same as that of the CaSiAlN3 crystal phase as a base crystal and M [wherein M represents one or more elements selected from among Mn, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu] being added as a luminescent center; and a white light emitting diode using the above phosphor. The above phosphor is an inorganic phosphor having fluorescent characteristics suitable for emitting an orange or red light, which has a wave length greater than that of a light emitted by a conventional sialon phosphor activated with a rare earth element, and the above white light emitting diode is rich in a reddish component and exhibits good color rendering.

Inventors:
HIROSAKI NAOTO (JP)
UEDA KYOTA (JP)
YAMAMOTO HAJIME (JP)
Application Number:
PCT/JP2004/017895
Publication Date:
June 09, 2005
Filing Date:
November 25, 2004
Export Citation:
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Assignee:
INDP ADMINISTRATIVE INST NIMS (JP)
HIROSAKI NAOTO (JP)
UEDA KYOTA (JP)
YAMAMOTO HAJIME (JP)
International Classes:
C01B21/06; C01B21/082; C04B35/58; C04B35/581; C04B35/584; C04B35/597; C09K3/00; C09K11/08; C09K11/64; C09K11/66; C09K11/67; C09K11/77; C09K11/80; (IPC1-7): C09K11/64; C04B35/00; H01J1/62; H01L33/00
Foreign References:
JP2002076434A2002-03-15
JP2002363554A2002-12-18
JP2003124527A2003-04-25
JP2003203504A2003-07-18
JP2003206481A2003-07-22
JP2005008793A2005-01-13
JP2005008794A2005-01-13
JP2003336059A2003-11-28
JP2004277663A2004-10-07
JP2004067837A2004-03-04
JP2003206481A2003-07-22
JP2002322474A2002-11-08
JP2003321675A2003-11-14
JP2002363554A2002-12-18
US6682663B22004-01-27
JP2003277746A2003-10-02
JP2004010786A2004-01-15
JP2900928B21999-06-02
JP2927279B21999-07-28
JP3364229B22003-01-08
JPH10163535A1998-06-19
JPH05152609A1993-06-18
JPH0799345A1995-04-11
Other References:
ZHEN-KUN HUANG ET AL: "Phase Relations of the Sin3N4-A1N-CaO System", JOURNAL OF MATERIALS SCIENCE LETTERS, vol. 4, no. 3, 1985, pages 255 - 259, XP002985078
J. W. H. VAN KREVEL: "On new rare-earth doped M-Si-Al-O-N materials", TU EINDHOVEN, 2000
ZHEN-KUN-HUANG, JOURNAL OF MATERIALS SCIENCE LETTERS, vol. 4, 1985, pages 255 - 259
See also references of EP 1696016A1
Attorney, Agent or Firm:
Miyakoshi, Noriaki (7-13 Nishi-Shimbashi 1-chom, Minato-ku Tokyo, JP)
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