发明授权
- 专利标题: Composite high reflectivity layer
- 专利标题(中): 复合高反射层
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申请号: US13071349申请日: 2011-03-24
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公开(公告)号: US08598609B2公开(公告)日: 2013-12-03
- 发明人: James Ibbetson , Ting Li , Monica Hansen
- 申请人: James Ibbetson , Ting Li , Monica Hansen
- 申请人地址: US CA Goleta
- 专利权人: Cree, Inc.
- 当前专利权人: Cree, Inc.
- 当前专利权人地址: US CA Goleta
- 代理机构: Koppel Patrick Heybl & Philpott
- 主分类号: H01L33/00
- IPC分类号: H01L33/00
摘要:
A high efficiency light emitting diode with a composite high reflectivity layer integral to said LED to improve emission efficiency. One embodiment of a light emitting diode (LED) chip comprises an LED and a composite high reflectivity layer integral to the LED to reflect light emitted from the active region. The composite layer comprises a first layer, and alternating plurality of second and third layers on the first layer, and a reflective layer on the topmost of said plurality of second and third layers. The second and third layers have a different index of refraction, and the first layer is at least three times thicker than the thickest of the second and third layers. For composite layers internal to the LED chip, conductive vias can be included through the composite layer to allow an electrical signal to pass through the composite layer to the LED.
公开/授权文献
- US20110169036A1 COMPOSITE HIGH REFLECTIVITY LAYER 公开/授权日:2011-07-14
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