研究生: |
李育仁 Yu-Ren Lee |
---|---|
論文名稱: |
染料添加賓-主效應膽石醇液晶元件之光電效應 Electro-Optical Effects of Dye Doped Cholesteric Liquid Crystal Device |
指導教授: |
李俊毅
Jiunn-Yih Lee |
口試委員: |
胡孝光
Shiaw-Guang Hu 戴華山 Hwa-Shan Tai |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2006 |
畢業學年度: | 94 |
語文別: | 中文 |
論文頁數: | 64 |
中文關鍵詞: | 二色性染料 、膽石醇型液晶元件 |
外文關鍵詞: | dye, cholesteric liquid crystal devices |
相關次數: | 點閱:336 下載:0 |
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本研究擬探討染料添加賓-主效應膽石醇液晶元件之光電效應。
利用二色性染料混掺於膽石醇型液晶元件,透過操作電壓、光穿透
度、對比度、應答時間等參數對於膽石醇型液晶元件厚度、二色性染
料重量百分濃度以及膽石醇型液晶螺旋距相關依存性來探討其光-電
效應。實驗結果顯示較低的元件厚度、較大之螺旋距以及較低的二色
性染料濃度可以得到較低的操作電壓以及更迅速的應答時間。另外,
相同元件厚度下,較大螺旋距的膽石醇型液晶在光穿透度、對比度以
及反射率特性表現了較為狹窄上升曲線。透過二色性染料的添加,達
到毋需偏光片即可達明暗對比之顯示效果以及上下、左右對稱的顯示
角度。
This study discussed electro-optical effects of dye doped
cholesteric liquid crystal devices. We studied the
electro-optical effects by using dichroic dye mixing in
cholesteric liquid crystal device and through parameters, such
as operation voltage, light transmittance, contrast ratio and
response time, against the related dependence of cholesteric
liquid crystal device cell gap, dye weight percent, and
cholesteric liquid crystal pitch. The experimental results
show that smaller cell gap, longer pitch, and lower percentage
of dichroic dye got lower operation voltage and shorter period
of response time. Moreover, with the same cell gap, the
cholesteric liquid crystal device with longer pitch performed
a narrow and ascent curve in light transmittance, contrast
ratio and reflection characters. By the doping dichroic dye,
it achieved a contrast effect and viewing angle on either side
without any polarizer.
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