- 专利标题: Textured encapsulant surface in LED packages
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申请号: US12002429申请日: 2007-12-14
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公开(公告)号: US09431589B2公开(公告)日: 2016-08-30
- 发明人: Ban P. Loh , Chenhua You , Bernd Keller , Nathaniel O. Cannon , Mitch Jackson , Ernest W. Combs
- 申请人: Ban P. Loh , Chenhua You , Bernd Keller , Nathaniel O. Cannon , Mitch Jackson , Ernest W. Combs
- 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: H01L33/54
- IPC分类号: H01L33/54 ; H01L25/075
摘要:
A packaged LED device having a textured encapsulant that is conformal with a mount surface on which at least one LED chip is disposed. The textured encapsulant, which can be textured using an additive or subtractive process, is applied to the LED either prior to or during packaging. The encapsulant includes at least one textured surface from which light is emitted. The textured surface helps to reduce total internal reflection within the encapsulant, improving the extraction efficiency and the color temperature uniformity of the output profile. Several chips can be mounted beneath a single textured encapsulant. A mold having irregular surfaces can be used to form multiple encapsulants over many LEDs simultaneously.
公开/授权文献
- US20090152573A1 Textured encapsulant surface in LED packages 公开/授权日:2009-06-18
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