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研究生:胡雅文
研究生(外文):Hu, Ya-Wen
論文名稱:應用於背光模組中毋須反射片的高輝度複合式導光板設計
論文名稱(外文):Design of a novel integrated light guiding plate without the reflective sheet for backlight module application
指導教授:潘瑞文
指導教授(外文):Pan, Jui-Wen
學位類別:碩士
校院名稱:國立交通大學
系所名稱:光電系統研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:英文
論文頁數:42
中文關鍵詞:背光模組高輝度微結構
外文關鍵詞:backlighthigh luminancemicrostructure
相關次數:
  • 被引用被引用:1
  • 點閱點閱:577
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
在本論文中,我們提出一個新式背光模組,由一複合式導光板和上擴散片組成,此複合式導光板是由一個簡單無結構的平板,在上方鍍上一層具有均勻排列微結構的光學膜所組成,利用光學膜上的結構,同時達到導出光和準直光線的目的。
使用此複合式導光板的背光模組系統即使不需二次元件(稜鏡片),仍可以做到比原本更佳的高準直性,和傳統的邊光式背光模組比較,正向輝度可以提升6.1倍。另外,因為此導光板下方無結構,是利用全反射傳遞光線,所以下方毋須反射片。此複合型的導光板不僅可做到高效率,因為它毋須稜鏡片和反射片,因此也節省了元件數目,可有效降低光通過元件的能量耗損,連帶也節省了背後的製作成本。
此外,因為我們的微結構在形狀和排列都是對稱式,所以我們還可在原光源的另一端再加上第二光源,由模擬結果可以知道在只開單邊光源或是雙邊光源都打開的情況下,都有良好的均勻度和準直性,因此我們可自由選擇高亮度模式(雙邊光源)或是省電模式(單光源)。

We propose a novel backlight system, which consists of a hybrid light guide plate (LGP) and one diffuser sheet. The hybrid LGP contains a flat plate without any microstructures and one layer of optically patterned film (OPF). Comparing with a conventional edge-lit backlight system, the on-axis luminance can be improved up to 6.1-times by using the novel backlight system. The design also allows us to predigest the fabrication and reduce the number of components. Moreover, since the microstructures arrangement is periodical, Light Emitting Diodes (LEDs) can be used on both sides. When high-brightness is not needed, the LEDs can be turned on only on one side. This condition is called the “power-saving” mode. The LEDs on both sides can also be turned on for the “high brightness” mode.
Page
Abstract (in Chinese) i
Abstract ii
Acknowledge iii
Contents iv
List of Tables v
List of Figures vi
List of Items viii
Chapter 1 Introduction of Backlight 1
1-1 Preface 1
1-2 Introductions of backlight system 2
1-3 Motivation 5
Chapter 2 Basic Theory of Optics 6
2-1 Laws of reflection and refraction 6
2-2 Law of total internal reflection and refraction 7
2-3 Fresnel equation 8
2-4 Radiometry and photometry 10
2-5 Principle for the light guide plate 13
Chapter 3 The Novel Backlight Module 16
3-1 The idea and the principle of the novel light guide plate 16
3-2 The Conditions of the Novel Backlight System 20
Chapter 4 Simulation Result 22
4-1 Light source data 22
4-2 Simulation result of the novel backlight module 24
4-3 Comparison with the Different Backlight Systems 25
Chapter 5 Characteristic Analysis 30
5-1 Tolerance Analysis of Optically Patterned Film 30
5-2 Color Aberration Analysis 32
5-3 Both Side Light Source in the backlight system 34
Chapter 6 Conclusions 37
6-1 Conclusions 37
6-2 Future Work 38
Reference 39
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