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研究生:林韋翰
研究生(外文):Wei-Han Lin
論文名稱:硬式與軟式導光板微結構製程技術研究
論文名稱(外文):A Study on the Fabrication for Rigid and Flexible Light-Guide Plate
指導教授:鍾震桂
指導教授(外文):Chen-Kuei Chung
學位類別:碩士
校院名稱:國立成功大學
系所名稱:機械工程學系碩博士班
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2008
畢業學年度:96
語文別:中文
論文頁數:113
中文關鍵詞:軟式顯示器導光板光纖LIGA-Like製程
外文關鍵詞:LIGA-Like processlight-guide plateoptic fiberflexible display
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本研究主要目標為探討硬式與軟式高分子材質導光板的設計與製程,其目的為改善現有導光板技術的品質與降低成本。在硬式導光板部分,有別於傳統擴散點的V溝或噴墨網點結構,本研究採用黃光製程將微結構製作於PMMA基板的上表面。在利用曝光強度、光罩尺寸與形狀等參數調整來改變微結構形貌後,出光均齊度在多組自製導光板試片使用一片擴散膜與兩片交疊增亮膜後約82% ~ 89 %,相較於相同量測條件市售參考組80.2 %的數值約高出2 ~ 9個百分點,如圖4-29與4-30所示。而多組整體出光亮度相較於同樣量測條件市售參考組亦高出3 ~ 10個百分點,如圖4-35至4-37所示。本文並藉電鑄翻模技術大量複製成品,降低導光板單位成本,增加商業價值。在軟式導光板部分則使用可撓式的光纖,配合二氧化碳雷射製作出表面微刻痕,破壞光的全反射而形成導光板。研究更進一步利用雷射製作具有傾斜角度微刻痕的軟式導光板,用來改變出光角度。完成之光纖導光板未使用任何光學膜片之前均齊度即高達80.1 %,出光效率則達77.6 %。成品具有可撓的特性,可運用在未來軟式顯示器的背光源或是軟性光源之用途,亦可藉著設計微刻痕排列的角度變化,將此導光板應用於廣視角、雙視角螢幕等特殊的用途。
In order to improve the quality of light-guide plate and to reduce the cost, the purpose of this research is to discuss the design and production of light-guide plate, which is made of hard and soft polymer materials. In case of hard light-guide plate, the microstructures formation on the PMMA plate of upper surface made by photolithography technology was different from conventional V-cut or printing method. The adjusting of shape, size and exposure of mask can change the appearance of microstructures. The uniformity in light-guide plate sample using one diffusive sheet and two crossed BEF increase about 82% ~ 89 %. This uniformity is higher 2~9 percentage than reference of the commercial products in the same measurement condition (figure 4-29, 4-30). Brightness in multiple sample is higher 3~10 percentage than reference of the commercial products in the same measurement condition (figure 4-35, 4-37). Also the LIGA-Like process was use to produce metal model products, it could be produce in bulk, as far suitable for commercial purpose. In case of soft light-guide plate, CO2 laser was used to ablation optical fibers clad for scattering of light in the light-guide plate. Furthermore, the light-guide plate has slant microstructures so that the light emitting angle can be modify. The final design of light-guide plate is flexible that with 80.1 % uniformity and 77.6 % of efficiency, and can apply to display or light source that are flexible. Furthermore, light-guide plate can be designed by the variation of microstructures angle for special purpose, such as wide-view-angel and bi-view-angle LCDs.
中文摘要..................................................I
Abstract.................................................II
致謝....................................................III
目錄.....................................................IV
表目錄...................................................VI
圖目錄..................................................VII
第一章 緒論...............................................1
1-1 前言..................................................1
1-2 研究動機與目的........................................2
1-3 本文架構..............................................5
第二章 文獻回顧...........................................7
2-1 硬式導光板文獻回顧....................................7
2-1-1 導光板相關文獻......................................7
2-1-2 LIGA-Like技術相關文獻..............................11
2-2 軟式導光板相關文獻...................................15
2-2-1 光纖及導光軟板相關文獻.............................15
2-2-2 雷射加工高分子技術相關文獻.........................18
2-3 雙視角顯示螢幕相關文獻回顧...........................21
第三章 實驗方法與步驟....................................24
3-1 硬式導光板實驗方法與步驟.............................24
3-1-1 光罩製作...........................................25
3-1-2 黃光微影製程.......................................27
3-1-3 蒸鍍與電鑄翻模相關製備.............................30
3-2 軟式導光板實驗方法與步驟.............................35
3-2-1 軟式導光板設備製作.................................35
3-2-2 雷射加工參數設定...................................40
3-3 實驗量測儀器介紹.....................................43
第四章 硬式導光板表面微陣列製作..........................48
4-1 實驗參數對微結構外貌及導光板光學性質關係.............48
4-1-1 光罩形狀與尺寸調變對微結構外貌關係.................48
4-1-2 塗佈光阻轉速調整對微結構外貌關係...................51
4-1-3 曝光方式與劑量改變對微結構外貌關係.................54
4-1-4 相異微結構導光板光學性質量測.......................65
4-2 導光板微結構金屬模仁製作.............................75
4-3 金屬模仁轉印導光板微結構.............................78
第五章 軟式光纖導光板製作與應用..........................82
5-1 以雷射加工參數來預測光纖微結構.......................82
5-1-1 雷射參數對微結構外貌之影響.........................82
5-1-2 雷射融蝕間距與導光板性能關係.......................87
5-1-3 雷射融蝕功率與導光板性能關係.......................90
5-2 傾斜微結構與導光板特性關係...........................93
第六章 結論與未來展望....................................97
6-1 結論.................................................97
6-2 本文貢獻............................................101
6-3 未來展望............................................103
參考文獻................................................106
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