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Student Number 93226020
Author Kuo-Feng Kao(高國峯)
Author's Email Address No Public.
Statistics This thesis had been viewed 2447 times. Download 3387 times.
Department Optics and Photonics
Year 2005
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title The study of light extraction efficiency with respect to chip structure of GaN-LEDs
Date of Defense 2006-07-09
Page Count 74
Keyword
  • LED
  • Abstract In this dissertation, we build the optical model for light extraction analysis based on Monte Carlo ray tracing to study light extraction efficiency with respect to LED’s chip process and package.
    The first topic of the study is to analyze the light extraction of micro-LEDs. We study the effect on light extraction by the diffraction effect according to very small scale. The radiance of micro-ring LED is larger 3~13% than that of micro-disc LED. The second topic is to study the light extraction enhancement by surface texture and patterned substrate. We propose the optimal structure to obtain the highest light extraction efficiency. The light extraction enhancement of wire-bounding LED with surface texture and patterned substructure is 76%. Finally, we consider the package effect on the light extraction to meet the practical condition.
    Table of Content 摘要I
    英文摘要II
    圖索引III
    表索引VI
    第一章 緒論1
    1.1 LED的發展歷史1
    1.2 LED的優勢2
    1.3 內容大綱4
    第二章 光學模型設計原理與分析方式     5
    2.1光學上常用的原理及名詞         5
    2.2提升LED光萃取效率的方法         9
    2. 2 .1造成光萃取效率低落的光損失機構原因9
    2. 2. 2增進LED的光萃取效率方法        14
    2.3光學模型建立的基本原理         18
    第三章 微米級圓盤型及圓環型LED的光萃取效率分析24
    3.1微米級圓盤型及圓環型LED之幾何結構建立與分析24
    3.2活性層吸收特性之分析              31
    3.3邊界繞射效應之分析              38
    3.4總體效應之探討                   43
    第四章 晶片微結構對光萃取效率的影響46
    4.1晶片微結構光學模型的建立     46
    4.2 LED微結構於不同封裝技術之分析53
    4. 2. 1 傳統打線封裝發光二極體之分析54
    4. 2. 2 覆晶封裝發光二極體之分析58
    4. 2. 3 薄膜封裝發光二極體之分析62
    4.3分析討論         65
     
    第五章 結論68
    參考文獻     69
    中英文名詞對照表71
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    [27] J. W. Goodman, Introduction to Fourier Optics, Second Edition, McGraw-Hill Companies, Inc., (1996).
    [28] S. J. Lee, “Study of photon extraction efficiency in InGaN light-emitting diodes depending on chip structures and chip-mount schemes, ” Optical Engineering vol. 45, 014601(2006).
    Advisor
  • Ching-Cherng Sun(孫慶成)
  • Files
  • 93226020.pdf
  • approve in 2 years
    Date of Submission 2006-07-20

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