A model of the unidirectional alignment accompanying the pretilt angle of a nematic liquid crystal (NLC), 5CB, oriented on rubbed organic-solvent-soluble polyimide film

M. Nishikawa, N. Bessho, T. Natsui, Y. Ohta, N. Yoshida, Dae-Shik Seo, Y. Iimura, S. Kobayashi

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

We report a model of the unidirectional alignment accompanying the pretilt angle of a nematic liquid crystal (NLC), 5CB, oriented on rubbed organic-solvent-soluble polyimide (PI) film, which is useful for color active matrix liquid crystal displays. According to our computer calculation, the main chain of the PI molecule, which contains special moieties, forms a helicoidal structure. The model suggested in this paper for the NLC alignment claims that rubbing gives rise to the permanent stretching and deformation of the helicoidal structure that results in the NLC unidirectional alignment and pretilt angle, where the latter is attributed to the formation of asymmetric microscopic triangles.

Original languageEnglish
Pages (from-to)15-25
Number of pages11
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume275
DOIs
Publication statusPublished - 1996 Jan 1

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Nematic liquid crystals
polyimides
Polyimides
Organic solvents
liquid crystals
alignment
Liquid crystal displays
Stretching
triangles
Color
Molecules
color
matrices
molecules

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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abstract = "We report a model of the unidirectional alignment accompanying the pretilt angle of a nematic liquid crystal (NLC), 5CB, oriented on rubbed organic-solvent-soluble polyimide (PI) film, which is useful for color active matrix liquid crystal displays. According to our computer calculation, the main chain of the PI molecule, which contains special moieties, forms a helicoidal structure. The model suggested in this paper for the NLC alignment claims that rubbing gives rise to the permanent stretching and deformation of the helicoidal structure that results in the NLC unidirectional alignment and pretilt angle, where the latter is attributed to the formation of asymmetric microscopic triangles.",
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T1 - A model of the unidirectional alignment accompanying the pretilt angle of a nematic liquid crystal (NLC), 5CB, oriented on rubbed organic-solvent-soluble polyimide film

AU - Nishikawa, M.

AU - Bessho, N.

AU - Natsui, T.

AU - Ohta, Y.

AU - Yoshida, N.

AU - Seo, Dae-Shik

AU - Iimura, Y.

AU - Kobayashi, S.

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AB - We report a model of the unidirectional alignment accompanying the pretilt angle of a nematic liquid crystal (NLC), 5CB, oriented on rubbed organic-solvent-soluble polyimide (PI) film, which is useful for color active matrix liquid crystal displays. According to our computer calculation, the main chain of the PI molecule, which contains special moieties, forms a helicoidal structure. The model suggested in this paper for the NLC alignment claims that rubbing gives rise to the permanent stretching and deformation of the helicoidal structure that results in the NLC unidirectional alignment and pretilt angle, where the latter is attributed to the formation of asymmetric microscopic triangles.

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