Soluble polyimide films as alignment layers for bistable chiral-tilted homeotropic nematic liquid crystal display applications

被引：5

作者：

Chang, Chi-Jung ^{[1
]}

Tseng, I-Hsiang ^{[3
]}

Lin, Yu-Chi ^{[1
]}

Wu, Bo-Shiuan ^{[1
]}

Liang, Bau-Jy ^{[2
]}

Tsai, Mei-Hui ^{[3
]}

机构：

[1] Feng Chia Univ, Dept Chem Engn, Taichung 40724, Taiwan

[2] Feng Chia Univ, Dept Elect Engn, Taichung 40724, Taiwan

[3] Natl Chin Yi Univ Technol, Dept Chem & Mat Engn, Taichung 41170, Taiwan

来源：

THIN SOLID FILMS | 2013年 / 544卷

关键词：

Alignment layer; Polyimide; Bistable display; Pretilt angle; Liquid crystal; SIDE-CHAINS; PRETILT ANGLES; SURFACES;

D O I：

10.1016/j.tsf.2013.04.123

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Soluble polyimides (PI) with and without aliphatic side chains were synthesized by a one-pot synthesis method and acted as homogeneous or homeotropic liquid crystal alignment layers. Homeotropic PI was synthesized by grafting an alkyl side chain on the backbone of homogeneous PI. The vertical alignment properties can be tuned by adjusting the grafting density and the length of the side chains. In addition, various homogeneous and homeotropic PIs were blended by a different ratio to adjust the pretilt angle of the alignment film. The long-term alignment properties and thermal resistance of the alignment films were investigated. Combining the dual frequency liquid crystal with the alignment layers which have an intermediate pretilt angle of 75 degrees, a bistable chiral-tilted homeotropic nematic liquid crystal display device is demonstrated. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：74 / 78

页数：5

共 17 条

[1] Effects of backbone conformation and surface texture of polyimide alignment film on the pretilt angle of liquid crystals [J].