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研究生： 鄭智擎
Cheng, Chih-Ching
論文名稱： 可撓式微結構之製備與應用
Fabrication of flexible microstructure and its application
指導教授： 鍾震桂
Chung, Chen-Kuei
學位類別： 碩士
Master
系所名稱： 工學院 - 機械工程學系
Department of Mechanical Engineering
論文出版年： 2010
畢業學年度： 98
語文別： 中文
論文頁數： 100
中文關鍵詞： 可撓式 、微結構 、CO2雷射 、導光板 、PDMS
外文關鍵詞： Flexible, Microstructure, CO2 laser, Light Guide Plate, PDMS
相關次數： 點閱：89  下載：2 
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    • 本研究討論可撓式微結構之製備以及應用，其目的為改善現有可撓式微結構之製程技術與降低成本。本研究利用CO2雷射製備具有表面微結構之高分子模仁，方便改變表面微結構之形貌以及分佈，再以PDMS高分子材料可進行大量且快速之翻模之製程，以得到較好之出光效率。
    藉由金屬光罩輔助CO2雷射製程限制微結構形貌並且定義微結構之分佈方式，並可改善雷射加工所產生之凸塊。探討雷射線能量密度對於微結構形貌之關係以及微結構形貌、佈點對於出光均齊度進行光學性質分析。利用此製程製備出之導光板搭配使用一片擴散膜與兩片菱鏡片的均齊度可達78%，相當於具有均齊度75%的數值之市售參考組。
    利用具不同微結構形貌的PMMA高分子模仁，翻印出不同微結構形貌之PDMS並應用於導光板，探討微結構形貌以及佈點對於出光均齊度進行光學性質分析。將此導光板放入自製的背光模組並無加入擴散膜以及菱鏡片，量測出之均齊度可達76%，相當於具有均齊度75%之市售參考組。由於成品具有可撓的特性，可運用於軟性顯示器的背光源。

    This research is aim to improvement and cost down flexible microstructure process. We use CO2 laser machining microstructure on the polymer plate to get the mold, It’s can be easier change microstructure shape and arrangement, then PDMS cast into this polymer mold and de-mold to mass produce and reduce process time. This process can get better optical properties.
    We use CO2 laser fabricate microstructure and the microstructure shape and arrangement limit by foil mask. It also improved the problem of bugle by laser. The effects of laser linear energy density with microstructure shape are discussed. And the optical properties of various microstructure shape and microstructure arrangement are analyzed. Foil mask assisted CO2 laser process can get a light guide plate that has uniformity 78%, consist of a diffusion plate and two prism plate, and the uniformity of commercial products is 75%.
    Casting PDMS solvent in different PMMA mold, that has various microstructure shape and arrangement. The effects of optical properties of various microstructure shape and arrangement are analyzed. The best uniformity of PDMS light guide plate is 76% without diffusion and prism plate and has flexible property. It can be used in backlight unit on flexible display.

    摘要 I Abstract II 誌謝 III 目錄 IV 表目錄 VI 圖目錄 VII 圖目錄 VII 第一章 緒論 1 1-1 前言 1 1-2 可撓式微結構發展 4 1-3 背光模組發展 6 1-4 研究動機與目的 11 1-5 論文架構 13 第二章 文獻回顧 14 2-1 導光板文獻回顧 14 2-1-1 微結構製程 15 2-1-2 導光板微結構網點分佈 18 2-2 軟式導光板文獻回顧 22 2-2-1 電子紙 22 2-2-2 軟性顯示器 23 2-3 模擬導光板 27 2-3-1 幾何光學 27 2-3-2 光度學 29 2-3-3 背光模組導光板光學模擬 31 第三章 實驗方法與步驟 34 3-1 導光板實驗方法與步驟 34 3-1-1 光罩繪製 37 3-1-2 雷射製程 42 3-1-3 澆鑄製程 46 3-2 實驗量測儀器介紹 50 3-2-1 微結構形貌量測 50 3-2-2 導光板光學性質量測 51 第四章 導光板表面微結構陣列製作 54 4-1 CO2雷射加工製程模仁微結構分析 54 4-1-1 CO2雷射加工製程微結構 54 4-1-2 金屬光罩輔助CO2雷射加工製程製備微結構 57 4-1-3 模仁微結構與雷射線密度關係 58 4-2 PDMS微結構分析 67 4-3 導光板之光學性質分析 76 4-4 可撓式導光板之光學性質分析 82 第五章 結論與未來展望 89 5-1 結論 89 5-2 本文貢獻 93 5-3 未來展望 95 參考文獻 97 作者簡歷 100

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