发明名称 |
LED WITH PHOSPHOR TILE AND OVERMOLDED PHOSPHOR IN LENS |
摘要 |
<p>Overmolded lenses and certain fabrication techniques are described for LED structures. In one embodiment, thin YAG phosphor plates are formed and affixed over blue LEDs mounted on a submount wafer. A clear lens is then molded over each LED structure during a single molding process. The LEDs are then separated from the wafer. The molded lens may include red phosphor to generate a warmer white light. In another embodiment, the phosphor plates are first temporarily mounted on a backplate, and a lens containing a red phosphor is molded over the phosphor plates. The plates with overmolded lenses are removed from the backplate and affixed to the top of an energizing LED. A clear lens is then molded over each LED structure. The shape of the molded phosphor-loaded lenses may be designed to improve the color vs. angle uniformity. Multiple dies may be encapsulated by a single lens. In another embodiment, a prefabricated collimating lens is glued to the flat top of an overmolded lens.</p> |
申请公布号 |
KR20090127296(A) |
申请公布日期 |
2009.12.10 |
申请号 |
KR20097020177 |
申请日期 |
2008.02.26 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;PHILIPS LUMILEDS LIGHTING COMPANY, LLC |
发明人 |
MUELLER GERD;MUELLER MACH REGINA;BASIN GRIGORIY;WEST ROBERT SCOTT;MARTIN PAUL S.;LIM TZE SEN;EBERLE STEFAN |
分类号 |
H01L33/50;H01L33/54;H01L33/56 |
主分类号 |
H01L33/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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