| (19) |
 |
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(11) |
EP 2 500 333 A8 |
| (12) |
CORRECTED EUROPEAN PATENT APPLICATION |
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published in accordance with Art. 153(4) EPC |
| (15) |
Correction information: |
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Corrected version no 1 (W1 A1) |
| (48) |
Corrigendum issued on: |
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21.11.2012 Bulletin 2012/47 |
| (88) |
Date of publication A3: |
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19.09.2012 Bulletin 2012/38 |
| (43) |
Date of publication: |
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19.09.2012 Bulletin 2012/38 |
| (22) |
Date of filing: 01.11.2010 |
|
| (51) |
International Patent Classification (IPC):
|
| (86) |
International application number: |
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PCT/JP2010/069448 |
| (87) |
International publication number: |
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WO 2011/058902 (19.05.2011 Gazette 2011/20) |
|
| (84) |
Designated Contracting States: |
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AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL
NO PL PT RO RS SE SI SK SM TR |
| (30) |
Priority: |
13.11.2009 JP 2009260243
|
| (71) |
Applicant: Denki Kagaku Kogyo Kabushiki Kaisha |
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Tokyo 103-8338 (JP) |
|
| (72) |
Inventors: |
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- NOMIYAMA Tomohiro
Machida-city
Tokyo 194-8560 (JP)
- YAMADA Suzuya
Machida-city
Tokyo 194-8560 (JP)
- HASHIMOTO Hisayuki
Machida-city
Tokyo 194-8560 (JP)
|
| (74) |
Representative: Gulde Hengelhaupt Ziebig & Schneider |
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Patentanwälte - Rechtsanwälte
Wallstrasse 58/59
10179 Berlin
10179 Berlin (DE) |
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| |
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| (54) |
METHOD FOR PRODUCING BETA-SIALON PHOSPHOR |
(57) Provided is a production method of a β-sialon phosphor that europium ions are solid-solved
in β-sialon, including a mixing process for mixing raw materials of the β-sialon phosphor;
a burning process for burning the raw materials after the mixing process to form the
β-sialon phosphor; a HIP treatment process in which the β-sialon phosphor after the
burning process is subjected to a HIP treatment; an annealing process in which the
β-sialon phosphor after the HIP treatment process is subjected to an annealing treatment;
and an acid treatment process in which the β-sialon phosphor after the annealing process
is subjected to an acid treatment. According to the production method of a β-sialon
phosphor, a β-sialon phosphor excellent in luminescence intensity is obtained.