发明授权
- 专利标题: Broadband dielectric reflectors for LED with varying thickness
- 专利标题(中): 适用于不同厚度LED的宽带电介质反射器
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申请号: US14045595申请日: 2013-10-03
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公开(公告)号: US08889517B2公开(公告)日: 2014-11-18
- 发明人: Richard A. Bradley, Jr. , Georg J. Ockenfuss
- 申请人: Richard A. Bradley, Jr. , Georg J. Ockenfuss
- 申请人地址: US CA Milpitas
- 专利权人: JDS Uniphase Corporation
- 当前专利权人: JDS Uniphase Corporation
- 当前专利权人地址: US CA Milpitas
- 代理机构: JDS Uniphase Corporation
- 主分类号: H01L33/46
- IPC分类号: H01L33/46 ; H01L33/60 ; H01L33/64
摘要:
A broadband, omnidirectional, multi-layer, dielectric reflector for an LED in a white light emitting device provides both near 100% reflectivity across the visible spectrum of light, and electrical insulation between the substrate and the electrical circuitry used to power and control the LED. When a sealant material, having a higher index of refraction than air, is used to protect the LED and the accompanying electrical circuitry, an aluminum reflector layer or substrate is provided to make up for the loss of reflectivity at certain angles of incidence. The dielectric reflector includes two separate sections with two different thicknesses, a thinner section below the LED providing better heat conductivity, and a thicker section surrounding the LED providing better reflectivity.
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