发明申请
- 专利标题: Phosphor converted LED
- 专利标题(中): 磷光转换LED
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申请号: US13522723申请日: 2011-01-27
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公开(公告)号: US20120286647A1公开(公告)日: 2012-11-15
- 发明人: Peter Josef Schmidt , Hans-Helmut Bechtel
- 申请人: Peter Josef Schmidt , Hans-Helmut Bechtel
- 申请人地址: NL EINDHOVEN
- 专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人地址: NL EINDHOVEN
- 优先权: EP10152489.0 20100203
- 国际申请: PCT/IB2011/050362 WO 20110127
- 主分类号: H01J1/63
- IPC分类号: H01J1/63
摘要:
The invention is directed to a light emitting comprising a blue emitting LED, a first phosphor layer exited at the emitting wavelength of the LED, which phosphor has an emission wavelength within a range of between 500 nm and 560 nm, and a second phosphor layer having a color point u′ in the range between 0.24 and 0.35 and a peak emission of the phosphor layer of λp>600 nm of the emission spectra, especially a pcLED comprising a combination of a green emitting luminescent ceramic material and a second phosphor material having a broad emission spectra. The second phosphor material can comprise a compound of the general formula M1-x-y-zSi1+zAl1−zN3−zOz:Eu2+xCe2+y, whereby M is selected from the group consisting of Ca, Sr or mixtures thereof and 0.0001≦x≦0.005; 0.001≦y≦0.05 and 0≦z≦0.25.
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