| 申请日期 | 2025-09-15 | 申请号 | JP2000122883 |
| 公开（公告）号 | JP4374114B2 | 公开（公告）日 | 2009-12-02 |
| 公开国别 | JP | 申请人省市代码 | 全国 |
| 申请人 | OSRAM MELCO LTD | ||
| 简介 | PROBLEM TO BE SOLVED : To provide a method for producing a fluorescent substance having uniform and high luminous efficiency. SOLUTION : This method for producing the objective fluorescent substance comprises the following process : an aqueous solution of phosphoric acid is added to a rare earth element oxide made from La, Tb and Ce and obtained by burning the corresponding coprecipitated salt, to effect reaction, and the resultant reaction product is burned. | ||
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