发明申请
US20100102707A1 RED FLUORESCENT SUBSTANCE AND LIGHT-EMITTING DEVICE EMPLOYING THE SAME
审中-公开
红色荧光物质和使用其的发光装置
- 专利标题： RED FLUORESCENT SUBSTANCE AND LIGHT-EMITTING DEVICE EMPLOYING THE SAME
- 专利标题（中）： 红色荧光物质和使用其的发光装置
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申请号： US12606279申请日： 2009-10-27
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公开(公告)号： US20100102707A1公开(公告)日： 2010-04-29
- 发明人: Yumi FUKUDA , Naotoshi MATSUDA
- 申请人： Yumi FUKUDA , Naotoshi MATSUDA
- 申请人地址： JP Tokyo
- 专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人地址： JP Tokyo
- 优先权： JP2008-278642 20081029
- 主分类号： H01J1/63
- IPC分类号： H01J1/63 ; C09K11/64 ; C09K11/59
摘要：
The present invention provides a red fluorescent substance and a light-emitting device utilizing the substance. This device less suffers from color drift even when working with high power. The light-emitting device comprises a blue LED, a green fluorescent substance of Sr3Al3Si13O2N21 activated with a luminescent center, and the red fluorescent substance. The red fluorescent substance contains an inorganic compound comprising a metal element M, a trivalent element M1 other than the M, a tetravalent element M2 other than the M, and nitrogen element. In the inorganic compound, the M is partly replaced with a luminescent center element EC. The red fluorescent substance has basically the same crystal structure as Sr2Al3Si7ON13. The red fluorescent substance emits luminescence having a peak in the range of 580 to 650 nm when excited with light of 250 to 500 nm.