Influence of Package Structure on LED Light Extraction

NING Lei; SHI Yong-sheng; SHI Yao-hua; CHEN Yang-yang

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Influence of Package Structure on LED Light Extraction

Device Technology & Physics | 更新时间：2020-08-12

- Influence of Package Structure on LED Light Extraction
- Chinese Journal of Liquid Crystals and Displays Vol. 25, Issue 6, Pages: 822-825(2010)
- 作者机构：
  
  陕西科技大学电气与信息工程学院,陕西西安,710021
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN312+.8
- Received：31 December 2009，
  
  Revised：14 January 2010，
  
  Published Online：20 December 2010，
  
  Published：20 December 2010
- 稿件说明：
移动端阅览
宁磊, 史永胜, 史耀华, 陈阳阳. LED封装结构对出光率的影响[J]. 液晶与显示, 2010,25(6): 822-825

NING Lei, SHI Yong-sheng, SHI Yao-hua, CHEN Yang-yang. Influence of Package Structure on LED Light Extraction[J]. , 2010,25(6): 822-825
宁磊, 史永胜, 史耀华, 陈阳阳. LED封装结构对出光率的影响[J]. 液晶与显示, 2010,25(6): 822-825 DOI：

NING Lei, SHI Yong-sheng, SHI Yao-hua, CHEN Yang-yang. Influence of Package Structure on LED Light Extraction[J]. , 2010,25(6): 822-825 DOI：

摘要

出光率是影响LED发光效率的重要因素之一

优化LED出光率可以提高LED的器件发光效率。文章利用TracePro软件模拟分析了封装结构对LED出光率的影响

分析结果表明:封装腔体的形状与出光率关系不大

而封装腔体的张角、封装腔体顶面的凹凸性与出光率有较大关系

另外出光率还与腔体的高度、封装腔体的反射率、腔体的母线均相关。总之LED封装结构会影响LED出光率

在进行LED封装时

要选择合适的封装结构才能获得较高的LED出光率。

Abstract

The light extraction plays an important role in LED encapsulation to obtain a high efficiency. The influence of package structure on LED light extraction was investigated by the TracePro simulation in this work.The results indicate that cavity shape almost have no effect on light extraction

ratio of light-out depends on the flare angle of cavity and salient of top surface

additionally

ratio of light-out is related to the height

reflectance and bus of a certain cavity. Overall

the structure of package truly affect the LED light extraction

hence package structure plays a significant role in packaging LED with high light extraction.

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Keywords

references

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