在液晶顯示器（Liquid Crystal Display，LCD）背光模組中，其中增亮膜（Brightness Enhancement Film，BEF）主要由國外廠商來製作研發，國內只有些許廠商投入開發。有鑑於此本研究提出用精密加工鑽石磨削與創新的步階熱壓印轉印製程技術製作出三角錐狀微透鏡陣列：首先，利用精密加工鑽石磨削技術並使用鎢鋼材料，加工出其單一三角錐狀微透鏡其底部三邊邊長各約為300 μm、三邊斜邊邊長各約為222 μm、底部到頂端高度各約為139 μm、左右相鄰之兩顆三角錐頂點其間距各約為180 μm，以及三角錐三面頂角各約為85°的各別尺寸，此形成三角錐狀微透鏡陣列（Pyramid-shaped microlens array）用以當作第一模具。然後，運用第一模具之三角錐尖端部分，並搭配熱壓印機臺之對位移動機構，用步階熱壓印轉印方式進行圖樣轉印於金屬玻璃（Bulk Metallic Glass，BMG）上，而形成所需較小尺寸外形結構之凹面三角錐狀微透鏡陣列，此一技術可避免加工刀具圓弧半徑轉印之產生，將微透鏡陣列當成第二模具；或是直接轉印在PMMA（Polymethylmethacrylate）材料上形成所需凹面三角錐狀微透鏡陣列光學膜片。最後，再將第二模具直接熱壓印於PMMA上，形成凸面三角錐狀微透鏡陣列光學膜片所需成品。因此藉由上述製程方法，進而提供另一種可運用於在背光模組光學膜片的製作上。

Brightness enhancement film (BEF) has been manufactured in foreign factories for backlight module of liquid crystal display (LCD), then it only have some interior factories to put in exploitation. Because of this, the study presents a precision machining and new step-imprint hot embossing process to fabricate pyramid-shaped microlens array. First, a tungsten (W) steel material is manufactured by precision machining. The dimension of a pyramid-shaped microlens on the W steel are about 300 μm in the base line of three side, 222 μm in bevel edge of three side, 139 μm in height of bottom to top, 180 μm in pitch of the left and right sides between two pyramid-shaped microlens tips, and 85 degree in top angle of three bevel. The W steel mold is used as the first mold. Second, the pyramid peaks of first mold pattern are transferred on bulk metallic glass (BMG) using step-imprint hot embossing method with position adjustable mechanism to form a smaller concave pyramid-shaped microlens array, it can avoid arc radius of cutting tools which is used as the second mold. Another the pyramid peaks are transferred on PMMA (Polymethylmethacrylate) for concave pyramid-shaped microlens array of optical film in the hot embossing system. Finally, the second mold is fabricated to emboss convex pyramid-shaped microlens array of optical film on PMMA. The foregoing method is provided for backlight module of optical films process.

目錄
目錄 I
圖目錄 III
表目錄 VII
摘要 VIII
Abstract IX
第一章 緒論 1
1-1 前言 1
1-2 文獻回顧 9
1-3 研究動機與目的 21
1-4 本文架構 22
第二章 背光模組闡述 23
2-1 產業概況 23
2-2 探討背光模組基本架構 25
2-2-1 背光模組分類 26
2-2-2 背光模組結構介紹 30
2-3 背光模組相關產業發展脈動 49
第三章 三角錐狀微透鏡陣列實驗與製作 57
3-1 實驗流程步驟 57
3-2 第一模具製作流程 58
3-3 第二模具或成品製作流程 65
3-4 最後成品製作流程 73
第四章 實驗結果與討論 75
4-1 第一模具製程結果 75
4-2 第二模具或成品製程結果 80
4-2-1 步階熱壓印於第二模具與轉印至PMMA 90
4-2-2 步階熱壓印於PMMA 94
第五章 總結與未來展望 95
5-1 總結 95
5-2 未來展望 97
參考文獻 97

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