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Liquid Crystals Volume 41, 2014 - Issue 10
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Original Articles

Thickness dependence of the electro-optical properties of reverse-mode polymer-stabilised cholesteric texture

Zhigang SongKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei, People’s Republic of China
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Hongbo LuKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemical Engineering, Hefei University of Technology, Hefei, People’s Republic of ChinaCorrespondence[email protected]
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Jinliang HuKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;School of Chemical Engineering, Hefei University of Technology, Hefei, People’s Republic of China
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Wei XuKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;School of Chemical Engineering, Hefei University of Technology, Hefei, People’s Republic of China
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Jun ZhangKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei, People’s Republic of China
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Longzhen QiuKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China
,
Xianghua WangKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China
,
Guobing ZhangKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China
,
Juntao HuKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China
&
Guoqiang LvKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China
 show all
Pages 1382-1387 | Received 26 Mar 2014, Accepted 30 Apr 2014, Published online: 20 May 2014
 
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Abstract

The cell gap dependence of the electro-optical properties of reverse-mode polymer-stabilised cholesteric texture has been investigated. In this study, the morphology and electro-optical properties were analysed as a function of the thickness of the cells. The scanning electron microscopy indicates that the polymer networks become tighter with the decrease of cell gap. Increasing cell gap can improve the contrast ratio exponentially, while the threshold voltage increases linearly. The field-off response time increases, which is ascribed to the decreasing elastic force between the polymer network and the LC molecules.

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