Self-Assembled-Rubbing Hybrid Alignment for Ferroelectric Liquid Crystal

YAO Li-shuang; PENG Zeng-hui; LIU Yong-gang; XUAN Li

doi:10.3788/YJYXS20132802.0162

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Self-Assembled-Rubbing Hybrid Alignment for Ferroelectric Liquid Crystal

Material Physics & Chemistry | 更新时间：2020-08-12

- Self-Assembled-Rubbing Hybrid Alignment for Ferroelectric Liquid Crystal
- Chinese Journal of Liquid Crystals and Displays Vol. 28, Issue 2, Pages: 162-165(2013)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20132802.0162
  CLC： O469
- Received：02 November 2012，
  
  Revised：02 December 2012，
  
  Published：15 April 2013
- 稿件说明：
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姚丽双, 彭增辉, 刘永刚, 宣丽. 铁电液晶摩擦-自组装非对称取向[J]. 液晶与显示, 2013,28(2): 162-165

YAO Li-shuang, PENG Zeng-hui, LIU Yong-gang, XUAN Li. Self-Assembled-Rubbing Hybrid Alignment for Ferroelectric Liquid Crystal[J]. , 2013,28(2): 162-165
姚丽双, 彭增辉, 刘永刚, 宣丽. 铁电液晶摩擦-自组装非对称取向[J]. 液晶与显示, 2013,28(2): 162-165 DOI： 10.3788/YJYXS20132802.0162.

YAO Li-shuang, PENG Zeng-hui, LIU Yong-gang, XUAN Li. Self-Assembled-Rubbing Hybrid Alignment for Ferroelectric Liquid Crystal[J]. , 2013,28(2): 162-165 DOI： 10.3788/YJYXS20132802.0162.

摘要

将分子自组装单层膜技术应用于铁电液晶取向

结合传统摩擦技术制备了非对称取向的铁电液晶器件。采用在液晶相变过程中不施加电场的简易制备方法

获得了铁电液晶的均一排列。且对比实验表明

自组装膜末端基团极性越大

器件对比度越高。通过分子模拟和排列机理分析认为自组装膜极性端基的引入

基板附近处液晶分子偶极和自组装膜端基基团相互作用

导致自组装取向层和摩擦取向层表面处铁电液晶分子的偶极指向一致性

通过器件表面-内部液晶分子排列的诱导作用

从而实现了铁电液晶器件的单畴无缺陷排列。

Abstract

Molecular self-assembled monolayer (SAM) technique is used for ferroelectric liquid crystal (FLC) alignment

and with using conventional rubbing technique

hybrid-aligned FLC cell is fabricated. Without applying electric field during phase transition of FLC

mono-domain alignment of FLC device is obtained. Experimental results show that contrast ratio increases with the polarity of SAM terminal group. Based on molecular simulation and analysis of alignment principle

it is concluded the directions of

near the SAM and the rubbed substrates are consistent under

action between FLC molecules and SAM terminal groups. Via molecular interaction within surface-bulk transition region

the molecules in FLC cell could form mono-domain alignment with no defect.

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Keywords

references

Taiju T, Hirokazu F, Masahiro S, et al. Preliminary study of field sequential fullcolor liquid crystal display using polymer stabilized ferroelectric liquid crystal displays [J]. Jpn. J. Appl. Phys, 1999, 38(5A):L534-L536.[2] Yasufumi A, Takeshi T, Masahiro T, et al. Novel ferroelectric liquid crystal mode for active matrix liquid crystal display using cholesteric-chiral smectic C phase transition material [J].Jpn. J. Appl. Phys., 1999, 38(10):5977-5983.[3] 乌日娜,彭增辉,鲁兴海,等.N-Sc 相变铁电液晶的排列 [J].液晶与显示,2004,19(6):427-430.[4] David M, Walba, Charles A,et al. Self-assembled monolayers for liquid crystal alignment: simple preparation on glass using alkyltrialkoxysilanes [J].Liquid Crystals, 2004, 29(4):481-489.[5] Naciri J, Fang J Y, Moore M. Photosensitive triethoxysilane derivatives for alignment of liquid crystals [J]. Chem. Mater, 2000, 12(11):3288 -3295.[6] 李静,邹忠飞,乌日娜,等 .柔性双官能团聚合物制备网络稳定铁电液晶器件 [J].液晶与显示,2002, 22(1):6-10.[7] Okabe M, Sawatari N, Ishikawa M.A novel mono-domain alignment method for FLCs applied to half-V-shape-mode field-sequential-color displays [J]. SID Digest, 2005,36(1):1084-1087.[8] 姚丽双.铁电液晶周期性结构取向的排列研究[D].长春:中国科学院长春光学精密机械与物理研究所,2008.

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