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論文名稱 Title |
導光板與擴散結構整合式設計於背光模組均勻度之影響 The Effect of the Integrated Design of Light Guide and Diffusion Structures on the Uniformity of the Backlight Module |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
88 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2007-06-22 |
繳交日期 Date of Submission |
2007-07-06 |
關鍵字 Keywords |
背光模組、導光板 backlight, light guide, v-cut |
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統計 Statistics |
本論文已被瀏覽 5659 次,被下載 2510 次 The thesis/dissertation has been browsed 5659 times, has been downloaded 2510 times. |
中文摘要 |
近年發展的新型複合式導光板是在導光板上下表面建構稜鏡微 結構,即V-cut 導光板。V-cut 導光板雖然能有效利用光源能量,但 是其均勻度上的表現卻不如傳統網點式導光板。本文研究目的即在於 有效改善V-Cut 導光板均勻度不佳之情形。首先,在導光板下表面中 設計三種微結構,並分析對影響光通量最大之微結構形狀與幾何參 數。在導光板上表面中,設計有擴散膜散射特性之微透鏡,改善背光 模組均勻度。透過此散射微透鏡設計,能達到擴散膜的效果,因此可 以省去擴散膜的使用,節省成本。最後,本研究以7 吋背光模組模擬 分析,得到之導光板與擴散結構整合式設計,均勻度可達到90.6%。 |
Abstract |
Recently, the novel development of light guide is V-cut light guide which integrate the micro-prisms on the top and bottom surface of the light guide. Although the V-cut light guide can use the energy of light source efficiently, its uniformity is lower than the traditional scattering dots light guide. Therefore, the purpose of this study is to improve the low uniformity phenomenon of V-cut light guide. First, this study designs three micro-structures on the bottom surface of light guide, and analyzes the influences of shape and geometric parameters of each micro-structure on the luminous flux enhancement. Then, on the top surface of light guide, the micro-lens are modeled which includes the scattering characteristic of diffuser in order to improve the backlight uniformity. It can achieve the effect of diffuser does through the design of scattering micro-lens, so it can save the cost of diffuser. Finally, the integrated design of 7 inches light guide and diffusion structures was simulated by using commercial software LightTools, and the result shows that the backlight uniformity can achieve 90.6%. |
目次 Table of Contents |
Contents Contents i List of Tables iii List of Figures iv 摘要 vii Abstract viii Nomenclature ix Chapter1 Introduction 1 1.1 Foreword 1 1.2 Components of Backlight 2 1.3 Literatures Review 6 1.3.1 Integrated Light Guides 6 1.3.2 Dot Pattern Designs 7 1.3.3 Refinements of Reflector 8 1.3.4 Material Components of Diffuser 9 1.4 Research Objectives 9 1.5 Content Frame 10 Chapter2 Fundamental Theories 17 2.1 LightTools Software 17 2.2 Reflection 19 2.3 Refration 20 2.4 Photometry Units 21 Chapter3 Research Method 26 3.1 Verification of Backlight Module 26 3.2 Design of Backlight Dimensions 26 3.3 Selection of Micro-structures 27 3.4 Prism Sheet with Rounded Vertices 31 3.5 Definition of Backlight Uuiformity 31 Chapter4 Results and Discussions 41 4.1 The Design of Bottom Surface of the Light Guide 41 4.2 The Design of Top Surface of the Light Guide 43 4.3 The Covers of Different Micro-structures 45 4.4 The Improvement of Backlight Uniformity 47 4.5 Comparisons of Three Integrated Designs 50 4.6 Revision of Prism Sheet 51 Chapter5 Conclusions and Future Prospect 71 5.1 Conclusions 71 5.2 Future Prospect 72 References 74 |
參考文獻 References |
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