发明授权
- 专利标题: High reflective board or substrate for LEDs
- 专利标题(中): 高反射板或LED基板
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申请号: US13370696申请日: 2012-02-10
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公开(公告)号: US09105824B2公开(公告)日: 2015-08-11
- 发明人: Sten Heikman , Zhimin Jamie Yao , James Ibbetson , Fan Zhang
- 申请人: Sten Heikman , Zhimin Jamie Yao , James Ibbetson , Fan Zhang
- 申请人地址: US NC Durham
- 专利权人: Cree, Inc.
- 当前专利权人: Cree, Inc.
- 当前专利权人地址: US NC Durham
- 代理机构: Koppel, Patrick, Heybl & Philpott
- 主分类号: H01L33/46
- IPC分类号: H01L33/46 ; H01L33/60 ; H01L33/54 ; H01L33/62
摘要:
Light emitting devices and methods are disclosed that provide improved light output. The devices have an LED mounted to a substrate, board or submount characterized by improved reflectivity, which reduces the absorption of LED light. This increases the amount of light that can emit from the LED device. The LED devices also exhibit improved emission characteristics by having a reflective coating on the submount that is substantially non-yellowing. One embodiment of a light emitting device according to the present invention comprises a submount having a circuit layer. A reflective coating is included between at least some of the elements of the circuit layer. A light emitting diode mounted to the circuit layer, the reflective coating being reflective to the light emitted by the light emitting diode. In some embodiments, the reflective coating comprises a carrier with scattering particles having a different index of refraction than said carrier material.
公开/授权文献
- US20120199843A1 HIGH REFLECTIVE BOARD OR SUBSTRATE FOR LEDS 公开/授权日:2012-08-09
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