| 研究生: |
蔡育軍 Tsai, Yu-chen |
|---|---|
| 論文名稱: |
光聚合高分子薄膜對液晶配向性質改善之研究 Study of improvement on liquid crystal alignment using a photocurable polymer thin film |
| 指導教授: |
許家榮
Sheu, Chia-Rong |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 光電科學與工程研究所 Institute of Electro-Optical Science and Engineering |
| 論文出版年: | 2007 |
| 畢業學年度: | 95 |
| 語文別: | 中文 |
| 論文頁數: | 58 |
| 中文關鍵詞: | 改善 、液晶 、薄膜 、高分子聚合物 、光配向 |
| 外文關鍵詞: | photo alignment, polymer, thin film, liquid crystal, improve |
| 相關次數: | 點閱:69 下載:4 |
| 分享至: |
| 查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
以線性紫外偏振光照射含有感光基的液晶配向劑,一般稱為紫外光配向法,簡稱光配向(photoalignment),在非接觸式配向方法中光配向最常為人使用。Nissan RN1349是光配向中較常使用的配向材料,本論文針對此種配向劑提供了一個可以改善配向效能的新方法。我們首先將E7液晶材料和光聚合單体monomer(NOA65)所混成的化合物塗佈在已完成光配向製程的RN1349配向層的ITO玻璃基板上,再利用不同參數的紫外光照射使光聚合單體在配向層表面鍵結成一層高分子薄膜(polymerized thin film),此高分子薄膜經過原子力顯微鏡(atomic force microscope, AFM)觀察後我們發現雖然它沒有形成網狀結構,但仍具有液晶配向效果。且經過量測後和單一配向層比較起來具有較好的光電穩定性。我們並可以利用不同的照光參數來控制此高分子薄膜的結構,我們認為此研究結果可以用來改善以往光配向穩定性不足的缺點。在實驗中所使用的觀測儀器,包括偏光顯微鏡(polarized optical microscope, POM)、掃描式電子顯微鏡(scanning electron microscope, SEM)、原子力顯微鏡(atomic force microscope, AFM)及用來量測光穿透率-外加電壓(V-T curve)的量測系統.
Includes the photosensitivity base by the linear ultraviolet polarized
light illumination the liquid crystal to match to the medicinal preparation,Is called the ultraviolet ray to match to the law, the abbreviation light matchesto (photoalignment). Nissan RN1349 is the light matches matching whichcomparatively often uses to the center to the material ,the present paper inview of this kind matches to the medicinal preparation provides to be allowed to improve matches to the potency new method. We first the compoundwhich photocurable monomer (NOA65) mixes the E7 liquid crystal materialspread the cloth in complete the light to match match to system regulationRN1349 to on the level ITO glass foundation plate, Again uses the differentparameter the ultraviolet ray illumination to cause the monomer to match to
the level surface key forms a building store height member thin film (polymerized thin film),This high polymer thin film passes through atomic force the microscope(AFM)observes us to discover although it has not formed thenetwork structure, but still had the liquid crystal to match to theeffect. Afteralso passes through to measure and solely matches to the levelcompares has
the better photoelectricity stability. We use the different photo-indensity parameter to control this high polymer thin film the structure , we thought
this findings may use for to improve the former light to match the shortcoming which is insufficient to the stability.Off-carriage instrument uses which
in the experiment, including the polarizing microscope (POM), the scanning type electron microscope (SEM),atomic force microscope(AFM) anduses for the quantity light measuring transmission-external voltage(V-T curve)to measure the system.
[1]. 王其仁, 謝玉英, “配向膜材料及應用技術”,工業材料.166,
125(2001)﹒
[2]日本液晶應用技術研究會原著、陳連春譯 ”最新液晶應用技術”建興出版社(1998)
[3]李政道,“彩色液晶顯示器的配向技術與材料進展”, 工業材料.
150, 115(1999)﹒
[4]吳欣璁,“奈米液晶聚合物的研究與應用”, 國立成功大學, 物理研究所博士論文 (2005)
[5]松本正一, 角田良市,“液晶之基礎與應用”, 劉瑞祥, 國立編譯
館, 台北市,(1996)
[6]范揚宜”垂直配向液晶的錨定特性”交通大學光電所碩士論文(2001)
[7]陳彥廷”水平配向液晶的錨定特性” 交通大學光電所碩士論文(2001)
[8] 蔡榮正,“光聚合高分子網狀結構對於液晶盒配向性質之研究” 半導體與光電製程產業研發專班-碩 士 論 文(2006)
[9]劉光耀,“光聚合高分子在微流體管道上的設計與製作”,國立成功大學功大學, 化學所-碩士論文 (2004).
[10]魏文德.有機化工原料大全:第3卷﹝M﹞.北京:化學工業出版社,1990.655.
[11]B. Li, T. He, M. Ding, “A comparative study of insoluble and soluble polyimide thin films”, Polymer, 40, 789 (1999).
[12]D. Wilson, H. D. Stenzenberger, and P. M. Hergenrother, “Polyimides”, Chapman and Hall, New York (1990).
[13]D. Nwabunma and T. Kyu, ”POLYMER” Volume 42, Issue 2 , January 2001, Pages 801-806
[14] E.S.Lee, P.Vetter, T.Miyashita, T.Uchida,“Orientation of Polymer Molecules in Rubbed Alignment Layer and Surface Anchoring of Liquid Crystals”,Jpn.J.Appl.Phys. 32, 1339(1993)﹒
[15] I. Dierking, “Polymer network-stabilized liquid crystal”, Adv. Mater. 12, 167 (2000).
[16] I. Dierking,L. L. Kosbar, A. Afzali-Ardakani, A. C. Lowe, and G. A.Heldb ,“Network morphology of polymer stabilized liquid crystals” Received 31 July 1997; accepted for publication 24 August 1997.
[17] K.Y.Han, P.Vetter, T.Uchida, “ Determination of Molecular Inclination in Rubbed Polymer for Liquid Crystal Alignment by Measuring Retardation”, Jpn.J.Appl.Phys.32, 1242(1993)﹒
[18]M. L. Bessonov, M. M. Koton, V. V. Kudryavtsev, and L.A. Laius, “Polyimides: Thermally Stable polymers”, Consultants Bureau, New York and London (1987).
[19]M.K. Ghosh and K. L. Mittal, “Polyimides”, Marcel Dekker, New York (1996).
[20]Pochi Yeh and Claire Gu, Optics of Liquid Crystal Displays, A Wiley Interscience Publication, New York, 1999.
[21]T.Akahane, H.Kaneko, and M. Kimura, Jpn. J. Appl. Phys., Vol.35, 4434, 1996.
[22]Takatoh, Kohki”Alignment technologies and applications of liquid crystal devices p70~75 ” London ;Taylor & Francis(2005)New York
[23] Qingbing Wang, Ruipeng Sun, Yanqing Tian, Ximin Huang “Effect of polymer network on liquid crystal molecules orientation” North LCD Center, Changchun Institute ofPhysics, Changchun 130021, China
[24] Takeshi MURASHIGE, Hideo FUJIKAKE1, Seiichiro IKEHATA and Fumio SATO1”Anchoring Strength of Thin Aligned-Polymer Films Formed by Liquid Crystalline Monomer” Jpn. J. Appl. Phys. Vol. 42 (2003) pp. 1614–1617
[25]Y. Zhao, and Y. Chenard, “Liquid crystalline anisotropic gels prepared from optical alignment : polymer network formed in the isotropic phase”, Macromolecules. 33, 5891 (2000).