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  • 學位論文

高分子穩定雙穩態液晶顯示元件光電特性之研究

A Study on Electro-Optical Characteristics of Bistable Liquid Crystal Display Stabilized by Polymer

指導教授 : 陳殿榮
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摘要


傳統的光學補償模式(Optically Compensated Bend Mode,OCB) 在Twist State下無法停留很久,大約2 minutes就會回到初始的Splay State。本研究是以微量的光可聚合高分子(Polymer A、Polymer C)混合雙頻液晶,注入π-cell液晶盒,照射UV光下,同時外加一個交流電壓,希望能在表面做出高分子網,並降低樣品的表面錨定能,讓液晶初始為Splay State,但在Twist States能停留住一段時間,達到雙穩態的目的。 本研究主要可分為兩個部份,第一部分為高分子混入雙頻液晶內,製作出一種雙穩態在Splay State和Twist State,並討論此種雙穩態在不同電壓下驅動的特性;第二部份為左旋旋光性物質(Chiral)混入雙頻液晶,調整適當的d/p值,同樣做出雙穩態在Splay State和Twist State,並與第一部份的實驗做比較。

並列摘要


The conventional Optically Compensated Bend Mode stays in a Twist State about two minutes,then returns to an initial Splay State. In this study, we mixed dual-frequency nematic MLC-2048 and monomer A and monomer C, injecting the mixture into an empty cell. The cell was exposed to UV light with a curing voltage. We make a bistable liquid crystal cell by forming polymer network in the surface . First, we discussed the electro-optical characteristics of the polymer stabilized dual-frequency liquid crystal cell ,which has two stable states of Splay and Twist States. Next, we make a chiral doped injected the dual-frequency liquid crystal cell. We adjust the d/p ratio and succeed in obtaining the bistable Splay and Twist States.

參考文獻


[5] 陳智全,高分子穩定配向液晶顯示器之光電特性研究,碩士論文,光電工程研究所,台北,2006.
[6] 鄭媛心,高分子光配向材料研製光學彎曲補償之液晶顯示器及光電特性研究,碩士論文,光電工程研究所,台北,2008.
[1] D.W. Berreman and W.R. Heffner,“New bistable liquid-crystal twist cell,”Appl.Phys.Lett. 52, 3032 (1981).
[2] Tie-Zheng Qian, Zhi-Liang Xie,Hoi-sing Kwok and Ping Sheng,“Dynamic flow and switching bistability in twisted nematic liquid crystal cells,”Appl.Phys.Lett. 71,596 (1997).
[3] Fion S.Y. Yeung and H.S. Kwok,“Truly bistable twisted nematic liquid crystal display using photoalignment technology,”Appl.Phys.Lett. 83,4291 (2003).

被引用紀錄


許行遠(2010)。雙頻液晶應用在高預傾角同向配向液晶盒之研究〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1008201013283100

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