发明公开
- 专利标题: LED WITH PHOSPHOR TILE AND OVERMOLDED PHOSPHOR IN LENS
- 专利标题(中): LED麻醉剂磷酸二氢钠
-
申请号: EP08719476.7申请日: 2008-02-26
-
公开(公告)号: EP2115789A2公开(公告)日: 2009-11-11
- 发明人: MUELLER, Gerd , MUELLER-MACH, Regina , BASIN, Grigoriy , WEST, Robert Scott , MARTIN, Paul S. , LIM, Tze-Sen , EBERLE, Stefan
- 申请人: Koninklijke Philips Electronics N.V. , Philips Lumileds Lighting Company LLC
- 申请人地址: Groenewoudseweg 1 5621 BA Eindhoven NL
- 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: Groenewoudseweg 1 5621 BA Eindhoven NL
- 代理机构: Bekkers, Joost J.J
- 优先权: US679143 20070226
- 国际公布: WO2008104936 20080904
- 主分类号: H01L33/00
- IPC分类号: H01L33/00
摘要:
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.
信息查询
IPC分类: