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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 陳立仁(Li-Jen Chen) | |
dc.contributor.author | Shih-Chi Tsai | en |
dc.contributor.author | 蔡仕琦 | zh_TW |
dc.date.accessioned | 2021-06-15T00:22:31Z | - |
dc.date.available | 2009-02-10 | |
dc.date.copyright | 2009-02-10 | |
dc.date.issued | 2009 | |
dc.date.submitted | 2009-02-02 | |
dc.identifier.citation | Aoyama, H., Y. Yamazaki, N. Matsuura, H. Mada and S. Kobayashi, Mol. Cryst. Liq. Cryst. 72, 217. (1981)
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/41545 | - |
dc.description.abstract | 目前工業界普遍採用定向摩擦法制備配向膜,但此法存在許多的缺點,像是在摩擦的過程中會產生靜電力或是碎屑,這都會造成液晶顯示器的品質下降。
本實驗中先合成兩種化學性質不同的聚胺酯改質丙烯酸酯:D-UAs及F-UAs。接著利用軟性模板壓印法在聚胺酯改質丙烯酸樹脂表面製備出微溝槽結構。軟性模板壓印法能方便且快速的製備出配向膜,且壓印出的微溝槽結構非常整齊,也可避免靜電及碎屑的產生。藉由測量對水的接觸角以及觀察正交偏光顯微鏡下液晶的配向情形,我們發現D-UARs表面較親水,由其製備的配向膜會使液晶分子呈水平配向;而F-UAs極為疏水,由其製備的配向膜則會使液晶分子呈垂直配向。 我們從文獻中知道,配向膜的配向能力與表面化學性質及表面結構有關。於是我們將D-UAs和F-UAs以不同的比例混合,由此調控表面化學性質,可得到許多親疏水程度不同的表面。而最終我們成功地在固定液晶種類及表面起伏的條件下,藉由親疏水程度不同的表面達到調控預傾角的目的,並得到表面親疏水性與預傾角的關聯曲線。 | zh_TW |
dc.description.abstract | Nowadays, rubbing is the most common method to fabricate alignment layers. But it still exists a lot of drawbacks, such as static electricity and contaminants which will deteriorate the quality of LCD.
In this work, we synthesize two kinds of polyurethane modified acrylates which are D-UAs and F-UAs. And the soft embossing method is proposed to fabricate grating structure on surfaces of polyurethane modified acrylate resins. This method provides a convenient and rapid way to make alignment layers. By water contact angle measurements and the optical micrographs of liquid crystal alignment taken between crossed polarizers, we find that the D-UARs surface is hydrophilic and the LC alignment is planar and that the F-UARs surface is hydrophobic and the LC alignment is homeotropical. The alignment ability relates to surface property and surface structure. Thus, we mix D-UAs and F-UAs with different ratio to modify the surface property. And we can control the LC pretilt angle successfully by the modifications of surface chemical properties under fixed surface topography and liquid crystal type. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T00:22:31Z (GMT). No. of bitstreams: 1 ntu-98-R95524035-1.pdf: 5014964 bytes, checksum: c28b70a3e4442058ae867b4b05a25ab1 (MD5) Previous issue date: 2009 | en |
dc.description.tableofcontents | 口試委員會審定書i
中文摘要ii 英文摘要iii 目錄iv 圖目錄vii 表目錄x 第一章 緒論1 1.1 簡介1 1.2 液晶的分類1 1.3 液晶的物理性質3 1.3.1 液晶分子排列的秩序參數3 1.3.2 液晶的介電異方性4 1.3.3 液晶的複折射性4 1.3.4 液晶的彈性連續體理論5 1.4 液晶顯示器的基本原理6 1.5 聚胺基甲酸酯6 1.6 聚丙烯酸酯7 第二章 文獻回顧12 2.1 液晶分子的配向方法12 2.1.1 液晶配向方式12 2.1.2 液晶配向技術13 2.2 液晶分子的排列機制15 2.2.1 溝槽理論15 2.2.2 高分子主鏈旋轉重排理論19 2.2.3 電荷交互作用力理論19 2.2.4 表面粗糙度理論20 2.3 液晶分子的預傾角調控20 2.4 研究動機21 第三章 實驗藥品及設備26 3.1 實驗藥品26 3.2 實驗器材27 3.3 實驗設備28 3.4 儀器設備28 3.4.1 傅立葉轉換紅外線光譜儀28 3.4.2 原子力顯微鏡29 3.4.3 接觸角量測系統30 3.4.4 預傾角量測系統30 第四章 實驗方法38 4.1 聚氨酯改質丙烯酸酯的合成38 4.2 矽晶母片及玻璃基材的清潔38 4.3 異辛烷除水乾燥38 4.4 矽晶母片表面的預處理39 4.5 軟性模板的製造40 4.6 軟性模板壓印法製備聚胺酯改質丙烯酸樹脂表面41 4.6.1 製備平整表面41 4.6.2 製備微溝槽表面41 4.7 液晶盒的製作、液晶排列的觀察及預傾角量測42 第五章 結果與討論49 5.1 利用FTIR分析聚胺酯改質丙烯酸酯材料的合成49 5.2 聚胺酯改質丙烯酸樹脂材料的溶劑及相對應的旋轉塗佈性質與 壓印情形49 5.3 利用軟性模板壓印法製備聚胺酯改質丙烯酸樹脂微溝槽表面51 5.4 向列型液晶在聚胺酯改質丙烯酸樹脂微溝槽表面的配向性52 5.5 流場效應52 5.6 聚胺酯改質丙烯酸樹脂平整表面的對水之接觸角量測53 5.7 液晶的預傾角54 第六章 結論74 參考文獻76 | |
dc.language.iso | zh-TW | |
dc.title | 聚胺酯改質丙烯酸樹脂的合成及其在液晶配向膜上的應用 | zh_TW |
dc.title | Synthesis of Polyurethane modified Acrylic Resins for the Applications of Liquid Crystal Alignment Layers | en |
dc.type | Thesis | |
dc.date.schoolyear | 97-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 謝國煌,廖文彬,張正陽 | |
dc.subject.keyword | 聚氨酯,丙烯酸,聚胺酯改質丙烯酸樹脂,配向膜,預傾角,接觸角,軟式模板壓印法, | zh_TW |
dc.subject.keyword | polyurethane,acrylate,polyurethane modified acrylic resin,alignment layer,pretilt angle,water contact angle,soft embossing, | en |
dc.relation.page | 78 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2009-02-03 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 化學工程學研究所 | zh_TW |
顯示於系所單位: | 化學工程學系 |
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