Title:
RARE-EARTH ALUMINUM GARNET TYPE FLUORESCENT SUBSTANCE AND LIGHT-EMITTING DEVICE OBTAINED USING SAME
Document Type and Number:
WIPO Patent Application WO/2013/005356
Kind Code:
A1
Abstract:
A novel fluorescent substance in which the luminescence wavelengths can be controlled is provided without forming a composition in which a rare and expensive raw material is used in a large amount. The fluorescent substance is a compound which contains an ion that fluoresces and which has a garnet structure that comprises a rare-earth element, aluminum, and oxygen, the compound having a composition in which the element combination of the rare-earth element and aluminum has been partly replaced with an element combination of an alkaline-earth metal and zirconium (Zr) or of an alkaline-earth metal and hafnium (Hf).
Inventors:
OSHIO SHOZO
OKUYAMA KOJIRO
OKUYAMA KOJIRO
Application Number:
PCT/JP2012/001705
Publication Date:
January 10, 2013
Filing Date:
March 12, 2012
Export Citation:
Assignee:
PANASONIC CORP (JP)
OSHIO SHOZO
OKUYAMA KOJIRO
OSHIO SHOZO
OKUYAMA KOJIRO
International Classes:
C09K11/80; H01L33/50
Domestic Patent References:
| WO2009041297A1 | 2009-04-02 | |||
| WO2006049284A1 | 2006-05-11 | |||
| WO2010043287A1 | 2010-04-22 |
Foreign References:
| CN101760197A | 2010-06-30 | |||
| JP2001192655A | 2001-07-17 | |||
| JP2009544791A | 2009-12-17 | |||
| JP2007169647A | 2007-07-05 | |||
| JP2006104049A | 2006-04-20 | |||
| JP2007145705A | 2007-06-14 | |||
| JP3503139B2 | 2004-03-02 | |||
| US6812500B2 | 2004-11-02 | |||
| JP2001192655A | 2001-07-17 | |||
| JP2006520836A | 2006-09-14 | |||
| JP2007515527A | 2007-06-14 | |||
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| JP2011013320A | 2011-01-20 |
Other References:
F. S. GALASSO; MASANORI KATO; KEIZO UEMATSU: "Fine Ceramics no Kessho Kagaku", AGNE GIJYUTSU CENTER INC., pages: 277 - 284
"Phosphor Handbook", vol. 12, OHMSHA, LTD., article "Phosphor Research Society", pages: 237 - 238,268-
See also references of EP 2730637A4
"Phosphor Handbook", vol. 12, OHMSHA, LTD., article "Phosphor Research Society", pages: 237 - 238,268-
See also references of EP 2730637A4
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (JP)
Patent business corporation Ikeuchi and Sato and partners (JP)
Patent business corporation Ikeuchi and Sato and partners (JP)
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Claims: