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 journalArticle

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 languageEnglish
JournalElectrochemical and Solid-State Letters
Volume13
Issue number12
DOIs
Publication statusPublished - 2010 Oct 29

Fingerprint

Liquid Crystals
polyimides
Polyimides
Liquid crystals
liquid crystals
alignment
Plasmas
Molecules
molecules
cells
Interfacial energy
surface energy
Substrates
energy

All Science Journal Classification (ASJC) codes

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

Cite this

Ho, Tsung Yeh ; Lee, Chin Yang ; Kuo, Chia Wei ; Tang, Fu-Ching ; Liu, Kang Hung ; Cheng, Horng-Long ; Chou, Wei-Yang. / Plasma-beam-processed polyimide films for the alignment of liquid crystal molecules. In: Electrochemical and Solid-State Letters. 2010 ; Vol. 13, No. 12.
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Plasma-beam-processed polyimide films for the alignment of liquid crystal molecules. / Ho, Tsung Yeh; Lee, Chin Yang; Kuo, Chia Wei; Tang, Fu-Ching; Liu, Kang Hung; Cheng, Horng-Long; Chou, Wei-Yang.

In: Electrochemical and Solid-State Letters, Vol. 13, No. 12, 29.10.2010.

Research output: Contribution to journalArticle

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AU - Cheng, Horng-Long

AU - Chou, Wei-Yang

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