发明申请
- 专利标题: LIGHT SOURCE INCLUDING A WAVELENGHT-CONVERETED SEMICONDUCTOR LIGHT EMITTING DEVICE AND A FILTER
- 专利标题(中): 光源,包括波导转换半导体发光器件和滤波器
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申请号: US12985394申请日: 2011-01-06
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公开(公告)号: US20110097833A1公开(公告)日: 2011-04-28
- 发明人: Michael R. Krames
- 申请人: Michael R. Krames
- 申请人地址: NL Eindhoven US CA San Jose
- 专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.,PHILIPS LUMILEDS LIGHTING COMPANY, LLC
- 当前专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.,PHILIPS LUMILEDS LIGHTING COMPANY, LLC
- 当前专利权人地址: NL Eindhoven US CA San Jose
- 主分类号: H01L33/44
- IPC分类号: H01L33/44
摘要:
A semiconductor light emitting device comprises a light emitting layer disposed between an n-type region and a p-type region. The light emitting layer is adapted to emit first light having a first peak wavelength. A first wavelength converting material is adapted to absorb the first light and emit second light having a second peak wavelength. A second wavelength converting material is adapted to absorb either the first light or the second light and emit third light having a third peak wavelength. A filter is adapted to reflect fourth light having a fourth peak wavelength. The fourth light is either a portion of the second light or a portion of the third light. The filter is configured to transmit light having a peak wavelength longer or shorter than the fourth peak wavelength. The filter is disposed over the light emitting device in the path of at least a portion of the first, second, and third light.
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