稀疏排列之LED直下式背光板之二次光學設計

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姓名

彭柏翔(Bo-Xiang Peng) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

稀疏排列之LED直下式背光板之二次光學設計
(Secondary Optical Design of Sparsely-Arranged LED Direct-lit Backlight)

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至系統瀏覽論文 (2028-8-1以後開放)

摘要(中)

本論文成功提出使用雙晶封裝之白光LED 光源用於直下式背光板之二次光學設計方法。在商業考量下，此二次光學設計透鏡具有降低直下式背光板之光源使用顆數，來達成稀疏排列之效果。此論文研究具有四大部分，分別為光源模型建立、直下式背光板之二次光學設計、透鏡模型製作與透鏡實驗驗證，光形黃暈分析與黃暈解決技術。在本研究中，我們將雙晶封裝之白光LED藉由權重因子來建立其光源模型。在透鏡模型製作與實驗驗證階段，我們根據二次光學設計結果製作了相應的透鏡模型，並進行了實驗驗證。接著由於打樣模型的實驗光形具有黃暈的現象，此現象在我們使用單色之光源模型無法表現出，因此我們藉由藍光與黃光強度分布之權重因子優化原始的白光LED光源模型，此藍光與黃光之光源模型可於解釋實際樣品具有黃暈的問題。

摘要(英)

This paper successfully proposes a secondary optical design method using white light LED with dual crystal packaging for direct-type backlight modules. From a commercial perspective, this secondary optical design approach allows for a sparse arrangement of light sources, reducing the number of LEDs required in the direct-type backlight module. The research in this paper consists of four main parts: the establishment of a light source model, the secondary optical design for direct-type backlight modules, the fabrication and experimental verification of lens models, and the analysis and resolution of yellow halo effects. In this study, we establish the light source model of Phosphor-converted white LED (abbreviated as pcW-LED) with dual crystal packaging using weighting factors. In the stage of lens model fabrication and experimental verification, we create corresponding lens models based on the results of the secondary optical design and conduct experimental validation. However, due to the appearance of yellow halo effects in the experimental light distribution, which does not match the simulation results, we optimize the original white light LED light source model by adjusting the weighting factors for blue and yellow light intensity distributions. This blue and yellow light source model effectively explains the occurrence of yellow halo effects in the actual samples.

關鍵字(中)

★ 雙晶封裝之白光LED
★ 二次光學設計透鏡
★ 光源模型
★ 藍光與黃光之光源模型
★ 直下式背光板

關鍵字(英)

★ white light LED with dual crystal packaging
★ direct-type backlight modulesdirect-type backlight modules
★ secondary optical design
★ light source model
★ blue and yellow light source model

論文目次

目錄
摘要 II
ABSTRACT II
致謝 IV
目錄 VI
圖目錄 IX
第一章緒論 1
1-1 LED固態照明光學簡介 1
1-2 背光板模組結構介紹 3
1-3 研究背景與目的 8
第二章研究理論 10
2-1 幾何光學 10
2-1-1 反射定律 11
2-1-2 折射定律 14
2-1-3 全反射 15
2-2 光度學 16
2-2-1 視效函數 17
2-2-2 光度學計量單位 18
2-2-3 理想光源 22
2-3 中場擬合法 24
第三章 LED光源模型建構 27
3-1 雙晶LED光源之輻射光強度隨角度分佈量測實驗 27
3-2 建構雙晶白光LED之光源模型 31
3-3 雙晶白光LED之光源模型驗證 35
3-4 雙晶白光LED之實驗架構修正與驗證 38
第四章折射式透鏡之二階光學設計 42
4-1 光學設計概念 42
4-2 折射式透鏡之設計模擬 45
4-2-1 LED底部基板效應 47
4-2-2 LED基板效應對於光形之影響 48
4-3 折射式透鏡之設計優化 50
4-3-1 光形中心亮點之模擬分析 52
4-3-2 透鏡中間空柱對光形影響分析 55
第五章二次光學之折射式透鏡之模型製作與驗證 60
5-1 折射式透鏡之模型製作與驗證結果 60
5-2 光形之中心亮點分析 65
5-3 光形之黃暈分析 69
第六章結論 77
參考文獻 79
中英文名詞對照表 84

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指導教授

孫慶成(Ching-Cherng Sun)

審核日期

2023-8-15

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