本論文使用了兩種薄膜材料，再利用不同的透光率光罩製作電引致液晶微透鏡陣列。第一種材料為光致導電高分子Polyvinylcarbazole (PVK)，可藉由UV光源改變薄膜的導電特性，藉此製作具有導電率梯度分佈的薄膜層，施加一直流電，使液晶產生折射率梯度分佈，產生凸透鏡光學聚焦。第二種材料Vertical Polyimide (VPI)材料會因為UV光源的漸進光強變化，使表面液晶配向力漸進改變，液晶發生折射率的梯度變化，而有凸透鏡光學聚焦的效果。兩種材料所製作的液晶微透鏡陣列均可藉由外加電場調控內部液晶排列，達到電控焦距的效果。

The experiment produced a circular array of gradient mask to achieve gradient refractive index profile that liquid crystal molecules. The first experiment is fabricating the LC microlens with the polyvinylcarbazole films of gradient conductivity .The second experiment is fabricating the LC microlens with vertical alignment film which is using photo-induced surface modification of the vertical alignment layer. Pretilt angle with gradient diversification distribution hybrid alignment in the LC cell can be straightforwardly achieved through UV exposure. We choose the experimental parameters about exposure time of UV light, cell gap and mask pattern to investigate the influence for focal length.

第一章 簡介 1
1-1前言 1
1-2 液晶簡介 3
1-2-1 何謂液晶(Liquid Crystal) 3
1-2-2 液晶的分類 4
1-3 液晶物理 9
1-3-1 液晶分子排列的秩序參數 9
1-3-3 液晶的連續體彈性形變理論 11
1-3-4 外加電場對向列液晶的影響 12
第二章 基礎理論 17
2-1 GRIN Lens 導論 17
2-2 GRIN Lens 種類 18
2-3 GRIN Lens 理論推導 19
2-4 光致導電高分子導電機制 25
2-5 聚光干涉術(Conoscopy) 26
第三章 樣品製作與儀器架設 29
3-1光罩製造 29
3-2 樣品製作 30
3-2-1材料介紹 30
3-3樣品製作 33
3-4樣品檢測 40
3-4.1液晶盒厚度量測 40
3-4.2聚光干涉術 40
3-5 實驗儀器架設 41
3-5-1干涉環量測 41
3-5-2液晶透鏡焦距量測 42
第四章 實驗結果與討論 44
4-1 PVK光導電材料在液晶微透鏡陣列的應用 44
4-2 VPI配向材料在液晶微透鏡陣列的應用 55
第五章 總結與未來展望 63
5-1 PVK薄膜材料的液晶微透鏡陣列 63
5-2 VPI薄膜材料的液晶微透鏡陣列 63
5-3未來展望 64
參考文獻 65

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