NOVEL POLYIMIDE BASED PHOTO-ALIGNMENT LAYER MATERIALS FOR LIQUID CRYSTAL DISPLAYS

YU Haifeng; JANG Minsok; LIAN Yanqing; WANG Xiaogong; LIU Deshan

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NOVEL POLYIMIDE BASED PHOTO-ALIGNMENT LAYER MATERIALS FOR LIQUID CRYSTAL DISPLAYS

Research Article | 更新时间：2021-03-19

- NOVEL POLYIMIDE BASED PHOTO-ALIGNMENT LAYER MATERIALS FOR LIQUID CRYSTAL DISPLAYS
- Acta Polymerica Sinica Issue 1, Pages: 22-26(2004)
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- Published：20 February 2004，
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YU Haifeng, JANG Minsok, LIAN Yanqing, WANG Xiaogong, LIU Deshan. NOVEL POLYIMIDE BASED PHOTO-ALIGNMENT LAYER MATERIALS FOR LIQUID CRYSTAL DISPLAYS. [J]. Acta Polymerica Sinica (1):22-26(2004)
DOI：

YU Haifeng, JANG Minsok, LIAN Yanqing, WANG Xiaogong, LIU Deshan. NOVEL POLYIMIDE BASED PHOTO-ALIGNMENT LAYER MATERIALS FOR LIQUID CRYSTAL DISPLAYS. [J]. Acta Polymerica Sinica (1):22-26(2004) DOI：

摘要

经含有羟基的二胺单体HAB与二酐单体 4

4′-(六氟异丙基 ) 双邻苯二甲酸酐(6FDA)的缩聚反应

制备了含有羟基的先驱聚合物PI-OH

通过PI-OH上羟基与肉桂酰氯的酯化反应

制备了侧链带有肉桂酸酯基团的光敏聚酰亚胺PI-CI.用氢核磁共振(1H-NMR)分析、傅立叶红外光谱 (FTIR)分析等表征了上述聚合物的结构与感光性能 .用紫外-可见光谱 (UV-Vis)等方法研究了PI-CI的光交联反应.聚合物PI-CI旋镀膜经线性偏振光聚合技术 (LPP)处理并装配得到的液晶盒可使液晶分子很好地定向沿面排列 .上述实验表明

本文所合成的聚酰亚胺定向层材料是一种新的液晶光定向层材料.

Abstract

A precursor polymer PI-OH was prepared by polycondensation of a diamine monomer with hydroxyl groups(HAB) and a dianhydride monomer(6FDA) in solution．Then cinnamoyl chloride was reacted with the hydroxyl-containing precursor to prepare the photosensitive polymer PI-CI．The photosensitivity of PI-CI was studied by using UV-Vis and FTIR．After being processed by linear polarized polymerization(LPP)

the spin-coated films of PJ-CI were used as photo-alignment layers to assemble sandwich-type liquid crystal cells via a capillary action using a nematic liquid crystal 5CB．The observation of polarizing microscopy showed that the PI-CI photo alignment layers had the ability to align LC molecules．The alignment was meliorated with a longer irradiation time．The photosensitive polymer PI-CI synthesized in this work is promising for the application as photo-alignment layers for liquid crystal displays．

关键词

光定向层聚酰亚胺线性偏振光聚合感光聚合物

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