发明授权
- 专利标题: Surface textured LEDs and method for making the same
- 专利标题(中): 表面纹理LED及其制作方法
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申请号: US11592486申请日: 2006-11-02
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公开(公告)号: US07977702B2公开(公告)日: 2011-07-12
- 发明人: Michael R. T. Tan , Michael H. Leary
- 申请人: Michael R. T. Tan , Michael H. Leary
- 申请人地址: SG Singapore
- 专利权人: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
- 当前专利权人: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
- 当前专利权人地址: SG Singapore
- 主分类号: H01L33/00
- IPC分类号: H01L33/00
摘要:
A light-emitting device that includes an LED and a light extraction layer and the method for making the same are disclosed. The LED includes a substrate on which an active layer is sandwiched between a p-type layer and an n-type layer, the active layer generating light in a band of wavelengths about a central wavelength when holes and electrons recombine therein. The n-type layer, active layer, and p-type layer are formed on the substrate. First and second electrodes for providing a potential difference between the p-type layer and the n-type layer are included in the LED. The light extraction layer includes a clear layer of material having a first surface in contact with a surface of the LED and a second surface having light scattering features with dimensions greater than 0.5 times the central wavelength. The material of the clear layer can be polycrystalline or amorphous.
公开/授权文献
- US20080105882A1 Surface textured LEDs and method for making the same 公开/授权日:2008-05-08
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