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研究生:黃國勝
研究生(外文):Kuo-Sheng Huang
論文名稱:小尺吋LED背光模組之導光板設計研究
論文名稱(外文):Study of Light Guide Plate Design for Small size LED Backlight Module
指導教授:黃顯川黃顯川引用關係
指導教授(外文):Hsien-Chuen Huang
學位類別:碩士
校院名稱:清雲科技大學
系所名稱:電機工程研究所
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:2007
畢業學年度:95
語文別:中文
論文頁數:75
中文關鍵詞:LED背光系統區塊細劃網點導光板
外文關鍵詞:LED backlight systemblock division dotslight guide plate
相關次數:
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                 摘 要
  小型液晶面板之LED背光系統設計,由於牽涉到LED點光源特性,使得導光板網點設計增加了許多困難,也會增加生產成本。我們提出區塊細劃網點的設計概念來改善一般網狀式網點之導光板使用LED光源經常亮度不均的現象,對導光板出光的均勻性有明顯的效果。在本文中,我們利用區塊細劃法分別就單顆LED1.2吋手機次螢幕液晶面板及兩顆LED 2.2吋液晶面板及4顆LED3吋液晶面板的背光系統導光板設計,經過模擬後的結果其均齊度皆有大幅的提升。
  除外,我們也提出藉由液晶顯示器背光模組的導光板向前延伸,利用該區設計一擴光區使得LED點光源經由該區可獲得兩次的擴光效果,達到將點光源轉成近似冷陰極管的線光源效果。導光板向前延伸5mm應用於3吋液晶面板的背光系統導光板設計及導光板向前延伸3mm應用於2.2吋液晶面板的背光系統導光板設計,經過模擬後的結果有不錯的均齊度表現。
  希望本研究可帶給小型液晶顯示器背光系統之導光板設計提供實用的參考價值。
關鍵詞:LED背光系統、區塊細劃網點、導光板
                  Abstract
  A backlight system design of LED for small LCD panels, because of the point light characteristic of LEDs, that will increase not only the difficulty level of the design but also the costs of manufacture. We therefore propose a new design concept of “block division dot” to improve the uniformity of the traditional design of dots. In this thesis , we had demonstration that used this method for a single LED 1.2 inches sub-liquid crystal panel backlight design, and two LEDs 2.2 inches liquid crystal panel backlight design, and four LEDs 3 inches liquid crystal panel backlight design, after simulation, it is found that the degree of the evenness of light distribution of all the above LCDs has been greatly enhanced. The new design has provided obvious improvements on the uniformity of brightness.
  Further, we propose also the technique of a extension area of the light guide plate of the backlight module in order to achieve the effect of transferring the LED point-light source into the line-type source of the CCFL by way of a light expansion area through which it achieves twice the effect of light expansion. By simulation, the result indicates that it has a rather satisfactory performance of evenness of light of a 5mm extension on 3-inch and a 3mm extension on 2.2-inch light guide plates of backlight modules for LCD panels.
Keywords: LED backlight system, block division dots, light guide plate
                 目錄
中文摘要·····························································i
英文摘要·····························································ii
誌謝·································································iii
目錄·································································iv
表目錄·······························································vi
圖目錄·······························································vii
符號說明·····························································xi
第一章 緒論·························································1
   1.1 前言······················································1
   1.2 液晶顯示器背光模組介紹····································2
     1.2.1 背光模姐光學組件介紹································5
   1.3 3D微結構介紹··············································9
   1.4 文獻回顧··················································11
   1.5 研究目的與方法············································12
   1.6 論文架構··················································13
第二章 LED之小型背光系統之導光板設計研究····························14
   2.1 前言······················································14
   2.2 LED背光模組之傳統矩陣式網點設計模擬······················15
   2.3 LED光源之背光專利技術分析································17
   2.4 結論······················································24
第三章 區塊細劃法應用於LED背光模組之設計····························25
   3.1 前言······················································25
   3.2 導光板網點設計推導········································25
   3.3 各種常見小尺寸LED背光系統之設計模擬·······················27
      3.3.1 單顆LED之1.2吋導光板之設計·······················27
      3.3.2 單顆LED之2.2吋導光板設計·························32
      3.3.3 區塊細劃網點應用於雙顆LED2.2吋薄型導光板設計·····37          3.3.4 區塊細劃網點應用於3吋薄型導光板設計···············41
      3.3.5 區塊細劃網點應用於發光二極體雙邊交叉排列設計·······46          3.3.6 區塊細劃網點應用於四頂角發光二極體排列設計·········48
      3.4 結論·················································51
第四章 點光源轉線光源之LED背光模組之設計·····························52
      4.1 前言·················································52
      4.2 理論推導·············································53
      4.3 結構設計·············································55
      4.4 點光源轉線光源模擬···································59            4.4.1 單顆發光二極體之點光源轉線光源模擬·············59            4.4.2 4顆發光二極體之點光源轉線光源模擬··············62
      4.5 縮短擴光區之設計研究·································65
      4.6 結論·················································68
第五章 結論···························································69
參考文獻 ·····························································71
簡歷 ·································································75
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