Title:
OXYNITRIDE PHOSPHOR AND LIGHT-EMITTING INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2005/019376
Kind Code:
A1
Abstract:
An oxynitride phosphor exhibiting a luminance higher than that of conventional sialon phosphor activated by rare earth. There is provided an oxynitride phosphor of material design composed mainly of a JEM phase of the general formula MAl(Si6-zAlz)N10-zOz (wherein M represents at least one element selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) so that there is realized such a high luminance that for example, the fluorescence spectrum maximum emission wavelength ranges from 420 to 500 nm and the excitation spectrum maximum excitation wavelength ranges from 250 to 400 nm.
Inventors:
HIROSAKI NAOTO (JP)
Application Number:
PCT/JP2004/012135
Publication Date:
March 03, 2005
Filing Date:
August 18, 2004
Export Citation:
Assignee:
NAT INST FOR MATERIALS SCIENCE (JP)
HIROSAKI NAOTO (JP)
HIROSAKI NAOTO (JP)
International Classes:
C04B35/58; C04B35/597; C09K11/77; C09K11/80; H01J1/63; H01J11/12; H01J11/22; H01J11/24; H01J11/26; H01J11/34; H01J11/42; H01J29/20; H01L33/50; H01L33/62; (IPC1-7): C09K11/80; C04B35/58
Foreign References:
| JP2003106481A | 2003-04-09 | |||
| JP2002363554A | 2002-12-18 |
Attorney, Agent or Firm:
Moritake, Yoshiaki (Kita-yaesu Bldg. 3rd Floor 2-11, Nihonbashi
3-Chome, Chuo-K, Tokyo 27, JP)
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