博碩士論文 93226020 詳細資訊


姓名 高國峯(Kuo-Feng Kao)  查詢紙本館藏   畢業系所 光電科學與工程學系
論文名稱 GaN-LED晶片結構對光萃取效率影響的研究
(The study of light extraction efficiency with respect to chip structure of GaN-LEDs)
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摘要(中) 在本文中,我們利用蒙地卡羅光線追跡方法,建立LED光學萃取模型,分析LED晶片與封裝結構的改變對光萃取效率的影響。首先,我們針對微米級尺寸的LED進行分析。微米級LED擁有吸收小,出光面積大等優勢,此外,我們亦考慮了繞射效應對結構的光萃取效率之影響,圓環型LED之輝度比圓盤型LED提升約3~13%。再者,我們分析微陣列結構於晶片表面或界面的光萃取效率之影響,並針對其陣列結構進行優化,有織狀陣列結構且有環氧樹脂透鏡封裝的傳統打線式發光二極體可以達到最高的光萃取效率約76%。最後,我們也討論了陣列結構於不同封裝技術下,所造成的效應,以求達到擁有高效率的LED光源。
摘要(英) 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.
關鍵字(中) ★ 發光二極體 關鍵字(英) ★ LED
論文目次 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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指導教授 孫慶成(Ching-Cherng Sun) 審核日期 2006-7-20

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