白光 LED 空間色偏分佈之研究

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姓名

邱志煜(Chih-yu Chiu) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

白光 LED 空間色偏分佈之研究
(The study of angular correlated color temperature deviation for white light LEDs)

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摘要(中)

本論文中，我們將研究不同的白光LED 封裝型式其在空間上色彩均勻性的差異。我們將利用已建立之YAG 螢光粉模型，在相同色溫下分析各種封裝型式的空間色偏。
接著針對特定封裝形式，藉由改變其封裝體外型，在固定整體色溫下有效降低該封裝形式之空間色偏，亦即增加其空間上的色彩均勻性。
最後，再分析不同封裝形式在中場範圍內空間色偏的表現與定義其色彩之準遠場距離。

摘要(英)

In this thesis, we study color uniformity of white light LEDs with different package types. Based on the YAG phosphor model, we analyze the angular correlated color temperature deviation (ACCTD) for white light LEDs with different package types and find out which one is lowest.
After that, we modify the ACCTD of specific package types with the same correlated color temperature by changing the structure of the package. Finally, we study the ACCTD changes in mid-field region for white light LEDs and
define the distance of quasi far-field in color.

關鍵字(中)

★ 發光二極體
★ 空間色偏

關鍵字(英)

★ LED
★ ACCTD

論文目次

摘要 ........................................................................................................................ i
Abstract ................................................................................................................. ii
誌謝 ...................................................................................................................... iii
目錄 ...................................................................................................................... vi
圖目錄 .................................................................................................................. ix
表目錄 ................................................................................................................. xv
第一章緒論 ......................................................................................................... 1
1.1 LED 發展背景 ......................................................................................... 1
1.2 研究動機與目的 ..................................................................................... 4
1.3 論文大綱 ................................................................................................. 6
第二章基本原理 ............................................................................................... 7
2.1 引言 ......................................................................................................... 7
2.2 LED 發光原理 ......................................................................................... 7
2.3 螢光粉原理 ........................................................................................... 10
2.4 混光原理 ............................................................................................... 13
2.5 封裝技術 ............................................................................................... 16
第三章白光 LED 之空間色偏分析 ............................................................. 22
3.1 引言 ....................................................................................................... 22
3.2 螢光粉模型 ........................................................................................... 22
3.3 文獻回顧 ............................................................................................... 25
3.4 空間色偏之定義 ................................................................................... 27
3.5 不同封裝型式空間色偏之分析 ........................................................... 28
3.5.1 封裝架構架構之建立與分析 ..................................................... 29
3.6 不同封裝體大小空間色偏之分析 ....................................................... 34
3.6.1 封裝架構之建立 ......................................................................... 34
3.6.2 不同封裝體大小之空間色偏分析 ............................................. 35
3.7 空間色偏之優化 .................................................................................... 41
3.7.1 半球封裝增厚之空間色偏分析 ................................................. 44
3.7.2 遠離式半球封裝增厚之空間色偏分析 ..................................... 46
3.7.3 半球封裝增厚並改變螢光粉層結構之空間色偏分析 .............. 48
3.7.4 半球封裝增厚並改變透鏡結構之空間色偏分析 ...................... 49
3.7.5 空間色偏優化結論 ...................................................................... 52
3.7.6 半球封裝增厚形式實驗 ............................................................. 53
第四章白光 LED 之中遠場空間色偏分析 ................................................. 58
4.1 引言 ....................................................................................................... 58
4.2 中場理論與相關係數 ........................................................................... 58
4.3 不同封裝形式在中場之空間色偏 ....................................................... 60
4.4 不同封裝形式色彩之準遠場定義 ....................................................... 64
第五章結論 ..................................................................................................... 71
參考文獻 ............................................................................................................. 73
中英文名詞對照表 ............................................................................................. 77

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指導教授

孫慶成(Ching-cherng Sun)

審核日期

2012-8-7

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