分層雙色白光LED封裝效率及色彩表現之研究

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姓名

陳鶴祥(He-xiang Chen) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

分層雙色白光LED封裝效率及色彩表現之研究
(The Study of Packaging Efficiency and Chromatic Performance of White LEDs with Double-layer Phosphors)

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摘要(中)

本論文中，將研究以紅綠雙色螢光粉為封裝材料之白光LED。利用分層雙色螢光粉光學模型，比較各種封裝結構於三種不同相關色溫下之封裝效率、演色性及空間色偏。探討反射率變化對於封裝效率之影響，並分析封裝效率下降之原因。依照模擬結果，可得到不同封裝結構於各種相關色溫下，最佳演色指數之螢光粉濃度配方及其封裝效率。最後比較實際封裝與模擬結果，驗證螢光粉光學模型之準確性。

摘要(英)

In this thesis, we develop optical models of nitride and YAG phosphors for white-LED lighting. Accordingly, we analyze packaging efficiency, color rendering index, and angular correlated color temperature deviation of white LEDs at different correlated color temperatures and packaging structures with the two-phosphor model and double layers. Besides, the packaging loss with respect to the reflectivity of the substrate is analyzed.
The simulation is used for searching the most appropriate condition of the concentration of phosphors for different packaging structures at different correlated color temperatures so that the targeted performance such as the best color rendering index and highest packaging efficiency can be obtained.
Finally, a comparison between experimental measurement and simulation is done for evaluating the performance of the developed phosphor model.

關鍵字(中)

★ 白光LED
★ 螢光粉模型
★ 演色性
★ 封裝效率
★ 空間色偏

關鍵字(英)

★ white LED
★ phosphor model
★ color rendering index
★ package efficiency
★ ACCTD

論文目次

摘要 i
Abstract ii
誌謝 iii
目錄 v
圖目錄 viii
表目錄 xv
第一章緒論 1
1.1 前言 1
1.2 LED發展背景 2
1.3 研究動機 4
1.4 論文大綱 5
第二章基本原理 7
2.1 引言 7
2.2 LED發光原理 7
2.3 螢光粉發光原理 9
2.4 色彩學 12
2.4.1 CIE XYZ 色彩空間 13
2.4.2 相關色溫 15
2.4.3 演色性 17
第三章分層雙色螢光粉光學模型 19
3.1 YAG綠色螢光粉光學模型 19
3.1.1 綠色螢光粉之散射模型 21
3.1.2 藍光光源模型之建立 26
3.1.3 綠色螢光粉之吸收及轉換係數 28
3.1.4 藍光頻譜校正 34
3.1.5 綠色螢光粉光學模型之驗證 36
3.2 Nitride紅色螢光粉光學模型 40
3.2.1 紅色螢光粉之散射模型 40
3.2.2 紅色螢光粉之吸收及轉換參數 42
3.3 分層雙色螢光粉光學模型 44
3.3.1 綠光激發紅色螢光粉之吸收與轉換係數 45
3.3.2 分層雙色螢光粉模型之驗證 46
第四章不同封裝型式之封裝效率分析 53
4.1 封裝效率之定義 53
4.2 封裝架構之建立 54
4.3 封裝效率之分析 57
第五章分層雙色LED之色彩表現 71
5.1 分層雙色LED之演色性 71
5.2 分層雙色LED之空間色偏 75
第六章結論 81
參考文獻 83
中英文名詞對照表 91

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指導教授

孫慶成(Ching-cherng Sun)

審核日期

2013-8-8

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