Plasma-beam-processed polyimide films for the alignment of liquid crystal molecules

Tsung Yeh Ho; Chin Yang Lee; Chia Wei Kuo; Fu-Ching Tang; Kang Hung Liu; Horng-Long Cheng; Wei-Yang Chou

doi:10.1149/1.3486449

Plasma-beam-processed polyimide films for the alignment of liquid crystal molecules

Tsung Yeh Ho, Chin Yang Lee, Chia Wei Kuo, Fu-Ching Tang, Kang Hung Liu, Horng-Long Cheng, Wei-Yang Chou

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate a plasma-beam-processed polyimide (PI) surface to effectively align liquid crystal (LC) molecules. The pretilt angles of LCs can be varied between 0 and 3.5°, and the PI surface energy can be adjusted by controlling the plasma beam with an energy of 450 eV at an incident angle varying from 0 to 80° with respect to the normal direction of the substrate. Additionally, a method was developed to quickly evaluate the level of anchoring force of LC when compared with a rubbed-aligned LC cell. The performance of this method should be under LC cells with the same alignment materials.

Original language	English
Journal	Electrochemical and Solid-State Letters
Volume	13
Issue number	12
DOIs	https://doi.org/10.1149/1.3486449
Publication status	Published - 2010 Oct 29

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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abstract = "We demonstrate a plasma-beam-processed polyimide (PI) surface to effectively align liquid crystal (LC) molecules. The pretilt angles of LCs can be varied between 0 and 3.5°, and the PI surface energy can be adjusted by controlling the plasma beam with an energy of 450 eV at an incident angle varying from 0 to 80° with respect to the normal direction of the substrate. Additionally, a method was developed to quickly evaluate the level of anchoring force of LC when compared with a rubbed-aligned LC cell. The performance of this method should be under LC cells with the same alignment materials.",

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AU - Ho, Tsung Yeh

AU - Lee, Chin Yang

AU - Kuo, Chia Wei

AU - Tang, Fu-Ching

AU - Liu, Kang Hung

AU - Cheng, Horng-Long

AU - Chou, Wei-Yang

PY - 2010/10/29

Y1 - 2010/10/29

N2 - We demonstrate a plasma-beam-processed polyimide (PI) surface to effectively align liquid crystal (LC) molecules. The pretilt angles of LCs can be varied between 0 and 3.5°, and the PI surface energy can be adjusted by controlling the plasma beam with an energy of 450 eV at an incident angle varying from 0 to 80° with respect to the normal direction of the substrate. Additionally, a method was developed to quickly evaluate the level of anchoring force of LC when compared with a rubbed-aligned LC cell. The performance of this method should be under LC cells with the same alignment materials.

AB - We demonstrate a plasma-beam-processed polyimide (PI) surface to effectively align liquid crystal (LC) molecules. The pretilt angles of LCs can be varied between 0 and 3.5°, and the PI surface energy can be adjusted by controlling the plasma beam with an energy of 450 eV at an incident angle varying from 0 to 80° with respect to the normal direction of the substrate. Additionally, a method was developed to quickly evaluate the level of anchoring force of LC when compared with a rubbed-aligned LC cell. The performance of this method should be under LC cells with the same alignment materials.

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Plasma-beam-processed polyimide films for the alignment of liquid crystal molecules

Abstract

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