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研究生: 林峻楓
JunFeng Lin
論文名稱: 背光模組與新LED封裝結構光學耦合之研究
Study of coupling efficiency of light guide with LED in new package structure.
指導教授: 孫慶成
Ching-Cherng Sun
口試委員:
學位類別: 碩士
Master
系所名稱: 理學院 - 光電科學與工程學系
Department of Optics and Photonics
畢業學年度: 98
語文別: 中文
論文頁數: 60
中文關鍵詞: 背光模組LED光學模型LED封裝架構背光模組光學模型
外文關鍵詞: LED Package Structure, Backlight Optical Model, Backlight module, LED Optical Model
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  • 以LED作為光源的背光模組,組裝作業時,LED與導光板間存在肉眼幾乎不可見的間隙,而當著間隙增大時背光模組輝度會大幅度下降。本論文提出一新複合稜鏡微結構之LED設計,用以調整LED的發光光型,有效解決背光模組輝度隨著因LED光源與導光板間組裝間隙增大,而大幅度下降的問題。


    The backlight with LED as light source, when the assembly operation, the existence gap between LED and light guide plate is almost invisible to the naked eye, and with the increase of gap will decrease backlight brightness sharply. This paper presents a new design of the LED compound prism micro-structure to adjust the LED’s emitting light pattern to resolve the sharp decrease to backlight brightness comes with increase of assembly gap between LED and light guide plate.

    中文摘要 ………………………………………………………………… i 英文摘要 ………………………………………………………………… ii 誌謝 ………………………………………………………………………iii 目錄 ………………………………………………………………………iv 圖目錄 ……………………………………………………………………vii 表目錄 ……………………………………………………………………xi 第一章 緒論 …………………………………………………………… 1 1-1 LED發展背景 ……………………………………………………1 1-2 液晶顯示器用背光模組發展背景 ……………………………… 2 1-3 論文結構 ………………………………………………………… 3 第二章 液晶顯示器被光模組 ………………………………………… 5 2-1 光學原理 ………………………………………………………… 5 2-1-1 折射定律 …………………………………………………… 5 2-1-2 折射率 ……………………………………………………… 6 2-1-3 反射定律 …………………………………………………… 6 2-1-4 全反射 ……………………………………………………… 7 2-2 背光模組結構 …………………………………………………… 8 2-3 導光板原理與結構 ………………………………………………12 2-3-1 光盒子現象 …………………………………………………12 2-3-2 導光板光學特徵 ……………………………………………13 2-3-3 光學特徵設計 ………………………………………………17 第三章 白光LED …………………………………………………… 20 3-1 LED原理 ……………………………………………………… 20 3-1-1 半導體 ………………………………………………………20 3-1-2 二極體 ………………………………………………………21 3-2 白光LED構造 ………………………………………………… 24 3-3 精準的LED光學模型 ………………………………………… 28 3-4 建立精準的LED光學模型 …………………………………… 32 第四章 LED與導光板間組裝間隙對效率影響分析 …………………34 4-1 LED背光模組生產品質問題……………………………………34 4-2 CCFL背光模組與LED背光模組結構差異……………………37 4-3 LED背光模組效率分析 ……………………………………… 39 4-3-1 建立精確背光模組光學模型 ………………………………41 4-3-2 LED發光角與光學耦合效率關係 …………………………42 第五章 附合稜鏡微結構LED …………………………………………45 5-1 小發光 LED 封裝結構設計 ……………………………………45 5-2 稜鏡微結構最佳化分析 …………………………………………47 5-3 本論文未完成部分………………………………………………51 第六章 結論 ………………………………………………………… 52 參考文獻 ……………………………………………………………… 54 中英文名詞對照表 …………………………………………………… 57

    [1]S. Nakamura, N. Iwasa, M. Senoh, and T. Mukai, “Hole Compensation Mechanism of P-Type GaN Films,” JPN. J. Appl. Phys. 31, 1258-1266 (1992).
    [2]S. Nakamura, T. Mukai, and M. Senoh, “Candela-class high-brightness InGaN/AlGaN double-heterostructure blue-light-emtting diodes,” Appl. Phys. Lett. 64, 1687-1689 (1994).
    [3]S. Nakamura, “Present performance of InGaN-based blue/green/yellow LEDs,” Proc. of SPIE 3002, 26-35 (1997).
    [4]郭浩中,賴芳儀,郭守義,LED原理與應用, (五南,台灣,2009)。
    [5]黃之新,RGB LED 微形混光元件之設計,中央大學光電所碩士論文,中華民國九十四年。
    [6]S. J. Lee, and S. W. Song, “Efficiency improvement in high-emitting diodes base on geometrically deformed chips,” Proc. of SPIE 3621, 237-248 (1999).
    [7]N. Linder, S. Kugler, P. Stauss, K. P. Streubel, R. Wirth, and H. Zull, “High-Brightness AlGaInP Light-Emitting Diodes Using Surface Texturing,” Proc. of SPIE 4278, 19-25 (2001).
    [8]C. C. Sun, C. Y. Lin, T. X. Lee, and T. H. Yang, “Enhancement of light extraction of GaN-based light-emitting diodes with a microstructure array,” Opt. Eng. Lett. 43, 1700-1701 (2004).
    [9]E. Hecht, Optics Fourth Edition (Addison-Wesley, New York, 2001).
    [10]康為紘,新型植下式背光模組設計,中央大學光電所碩士論文,中華民國九十五年。
    [11]3M Vikuiti BEF II 90/50 裬鏡片資料。2010年5月20日,取自 http://www.3m.com。
    [12]C. C. Sun, I. Moreno, S. H. Chung, W. T. Chien, C. T. Hsieh, and T. H. Yang, “Direct LED backlight for large area LCD TVs: brightness analysis,” Proc. of SPIE 6669, 666909s (2007).
    [13]A. Tagaya, M. Nagai, Y. Koike, and K. Yokoyama, “Thin liquid-crystal display backlight system with highly scattering optical transmission polymers,” Appl. Opt. 40, 6274-6280 (2001).
    [14]J. G. Chang, M. H. Su, C. T. Lee, and C. C. Hwang, “Generating random and nonoverlapping dot patterns for liquid-crystal display backlight light guides using molecular-dynamics method,” J. Appl. Phys. 98, 114910s (2005).
    [15]J. G. Chang, and C. T. Lee, “Random-dot pattern design of a light guide in an edge-lit backlight: integration of optical design and dot generation scheme by the molecular-dynamics method,” J. Opt. Soc. Am. A 24, 839-849 (2007).
    [16]二極體電流-電壓特性曲線圖。 2010年5月26日,取自http://en.wikipedia.org/wiki/Current–voltage_characteristic。
    [17]S. J. Lee, “Analysis of light-emitting diodes by Monte Carlo photon simulation,” Appl. Opt. 40, 1427-1437 (2001).
    [18]C. C. Sun, T. X. Lee, S. H. Ma, Y. L. Lee, and S. M. Huang, “Precise optical modeling for LED lighting verified by cross correlation in the midfield region,” Opt. Letters 31, 2193-2195 (2006).
    [19]J. P. Lewis, “Fast Template Matching,” Vision Interface 95, Candian Image Processing and Pattern Recognition Society, 1995, Pages 120-123.
    [20]K. Briechle and U. D. Hanebeck, “Template Matching using Fast normalized Cross Correlation,” Proc. of SPIE 4387, 95-102 (2001).
    [21]T. X. Lee, C. Y. Lin, S. H. Ma, and C. C. Sun, “Analysis of position -dependent light extraction of GaN-based LEDs,” Optics Express 13, 4175-4179 (2005).
    [22]I. Moreno, and C. C. Sun, “Modeling the radiation pattern of LEDs,” Optics Express 16, 1808-1819 (2008).
    [23]TOPCON 色杜輝度計BM-7A 介紹。2010年7月2日,取自 http://www.topcon.co.jp/finetech/fpd/lumi/bm7a.html.
    [24]日亞化學SMT 型式 NSSW006T LED 產品規格書。2010年1月15日,取自http://www.nichia.co.jp/en/product/led.html#。
    [25]億光電子 SMT型式LED 產品規格書。2010年5月25日, http://www.everlight.com/.
    [26]J. G. Chang, C. Y. Lin, C. C. Hwang, and R. J. Yang, “Optical Design and Analysis of LCD Backlight Units Using ASAP,” Opt. Eng. Mag. 82, 75-89 (2003).
    [27]John F. Van Derlofske, “Computer modeling of LED light pipe systems for uniform display illumination,” Proc. of SPIE 4445, 119-129 (2001).
    [28]J. G. Chang and Y. B. Fang, “Dot-pattern design of a light guide in an edge-lit backlight using regional partition approach,” Opt. Eng. 46, 043002s (2007).
    [29]Y. H. Ju, J. H. Park, J. H. Lee, J. Y. Lee, K. B. Nahm, and J. H. Ko, “Study on the Simulation Model for the Optimization of Optical Structure of Edge-lit Backlight for LCD Applications,” J. Opt. Soc. Korea 12, 25-30 (2008).
    [30]S. Nakamura, A. Arimoto, K. Suzuki, and K. Shibata, “Prism plate for efficiently emitting light flux within a predetermined range, and liquid crystal indicator and indicator illumination method using the same,” U.S. Patent US5467417 (November 14, 1995).
    [31]M. B. O’Neill, and S. Cobb, Jr., “Brightness enhancement film with soft cutoff,” U.S. Patent US5917664 (June 29, 1999).
    [32]M. E. Gardiner, M. B. O’Neill, and D. L. Wortman, “Luminance control film,” U. S. Patent US6091547 (July 18, 2000).

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