Pretilt control of a nematic liquid crystal on polymer layers by atmospheric plasma irradiation

Eunje Jang; Hyungjun Song; Sin Doo Lee

doi:10.1143/JJAP.45.L1238

Pretilt control of a nematic liquid crystal on polymer layers by atmospheric plasma irradiation

Eunje Jang, Hyungjun Song, Sin Doo Lee

Dept. of Safety Engineering

Seoul National University

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

12 Scopus citations

Abstract

We present the pretilt control of a nematic liquid crystal (LC) on polymer layers exposed to a plasma beam under atmospheric pressure. Depending on the exposure parameters of the atmospheric pressure plasma (APP) in a sheetlike shape, the vertical or the planar alignment with a variable pretilt can be produced on a homeotropic polyimide (PI) layer. The polar anchoring energy of the APP-exposed PI layer is of the order of 10^-4 J/m², comparable to the rubbed PI layer. Cur approach to the plasma-assisted LC alignment under ambient pressure would be applicable for the in-line process of producing wideviewing LC displays with multidomains.

Original language	English
Pages (from-to)	L1238-L1240
Journal	Japanese Journal of Applied Physics
Volume	45
Issue number	46-50
DOIs	https://doi.org/10.1143/JJAP.45.L1238
State	Published - Dec 2006

Keywords

Alignment
Atmospheric pressure plasma
Liquid crystal
Polar anchoring energy
Pretilt

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10.1143/JJAP.45.L1238

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title = "Pretilt control of a nematic liquid crystal on polymer layers by atmospheric plasma irradiation",

abstract = "We present the pretilt control of a nematic liquid crystal (LC) on polymer layers exposed to a plasma beam under atmospheric pressure. Depending on the exposure parameters of the atmospheric pressure plasma (APP) in a sheetlike shape, the vertical or the planar alignment with a variable pretilt can be produced on a homeotropic polyimide (PI) layer. The polar anchoring energy of the APP-exposed PI layer is of the order of 10-4 J/m2, comparable to the rubbed PI layer. Cur approach to the plasma-assisted LC alignment under ambient pressure would be applicable for the in-line process of producing wideviewing LC displays with multidomains.",

keywords = "Alignment, Atmospheric pressure plasma, Liquid crystal, Polar anchoring energy, Pretilt",

author = "Eunje Jang and Hyungjun Song and Lee, \{Sin Doo\}",

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month = dec,

doi = "10.1143/JJAP.45.L1238",

language = "English",

volume = "45",

pages = "L1238--L1240",

journal = "Japanese Journal of Applied Physics",

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T1 - Pretilt control of a nematic liquid crystal on polymer layers by atmospheric plasma irradiation

AU - Jang, Eunje

AU - Song, Hyungjun

AU - Lee, Sin Doo

PY - 2006/12

Y1 - 2006/12

N2 - We present the pretilt control of a nematic liquid crystal (LC) on polymer layers exposed to a plasma beam under atmospheric pressure. Depending on the exposure parameters of the atmospheric pressure plasma (APP) in a sheetlike shape, the vertical or the planar alignment with a variable pretilt can be produced on a homeotropic polyimide (PI) layer. The polar anchoring energy of the APP-exposed PI layer is of the order of 10-4 J/m2, comparable to the rubbed PI layer. Cur approach to the plasma-assisted LC alignment under ambient pressure would be applicable for the in-line process of producing wideviewing LC displays with multidomains.

AB - We present the pretilt control of a nematic liquid crystal (LC) on polymer layers exposed to a plasma beam under atmospheric pressure. Depending on the exposure parameters of the atmospheric pressure plasma (APP) in a sheetlike shape, the vertical or the planar alignment with a variable pretilt can be produced on a homeotropic polyimide (PI) layer. The polar anchoring energy of the APP-exposed PI layer is of the order of 10-4 J/m2, comparable to the rubbed PI layer. Cur approach to the plasma-assisted LC alignment under ambient pressure would be applicable for the in-line process of producing wideviewing LC displays with multidomains.

KW - Alignment

KW - Atmospheric pressure plasma

KW - Liquid crystal

KW - Polar anchoring energy

KW - Pretilt

UR - https://www.scopus.com/pages/publications/34547912529

U2 - 10.1143/JJAP.45.L1238

DO - 10.1143/JJAP.45.L1238

M3 - Article

AN - SCOPUS:34547912529

SN - 0021-4922

VL - 45

SP - L1238-L1240

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 46-50

ER -

Pretilt control of a nematic liquid crystal on polymer layers by atmospheric plasma irradiation

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Keywords

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