Response time mechanism for a photo-aligned vertical-alignment liquid crystal display on a homeotropic alignment layer

Dae Shik Seo; Doo Seok Park; Hee Jong Jeon

doi:10.1080/02678290050122033

Response time mechanism for a photo-aligned vertical-alignment liquid crystal display on a homeotropic alignment layer

Dae Shik Seo, Doo Seok Park, Hee Jong Jeon

Department of Electrical and Electronic Engineering

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

3 Citations (Scopus)

Abstract

The electro-optical characteristics of the photo-aligned vertical-alignment liquid crystal display (VA-LCD) with a non-polarized UV exposure of 45° on homeotropic polyimide (PI) surface was investigated. The domain size of the photo-aligned VA-LCD increases proportionately with the UV exposure time. The LC alignment of the photo-aligned VA-LCD is attributed to photo-dissociation of the polymer by UV exposure on the homeotropic PI surface. Good voltage-transmittance characteristics of the photo-aligned VA-LCD without negative compensation film was measured. The response time of the photo-aligned VA-LCD was slow compared with a rubbing-aligned VA-LCD; this is considered to be due to the alignment of LC molecules.

Original language	English
Pages (from-to)	1189-1193
Number of pages	5
Journal	Liquid Crystals
Volume	27
Issue number	9
DOIs	https://doi.org/10.1080/02678290050122033
Publication status	Published - 2000

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1080/02678290050122033

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title = "Response time mechanism for a photo-aligned vertical-alignment liquid crystal display on a homeotropic alignment layer",

abstract = "The electro-optical characteristics of the photo-aligned vertical-alignment liquid crystal display (VA-LCD) with a non-polarized UV exposure of 45° on homeotropic polyimide (PI) surface was investigated. The domain size of the photo-aligned VA-LCD increases proportionately with the UV exposure time. The LC alignment of the photo-aligned VA-LCD is attributed to photo-dissociation of the polymer by UV exposure on the homeotropic PI surface. Good voltage-transmittance characteristics of the photo-aligned VA-LCD without negative compensation film was measured. The response time of the photo-aligned VA-LCD was slow compared with a rubbing-aligned VA-LCD; this is considered to be due to the alignment of LC molecules.",

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year = "2000",

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T1 - Response time mechanism for a photo-aligned vertical-alignment liquid crystal display on a homeotropic alignment layer

AU - Seo, Dae Shik

AU - Park, Doo Seok

AU - Jeon, Hee Jong

PY - 2000

Y1 - 2000

N2 - The electro-optical characteristics of the photo-aligned vertical-alignment liquid crystal display (VA-LCD) with a non-polarized UV exposure of 45° on homeotropic polyimide (PI) surface was investigated. The domain size of the photo-aligned VA-LCD increases proportionately with the UV exposure time. The LC alignment of the photo-aligned VA-LCD is attributed to photo-dissociation of the polymer by UV exposure on the homeotropic PI surface. Good voltage-transmittance characteristics of the photo-aligned VA-LCD without negative compensation film was measured. The response time of the photo-aligned VA-LCD was slow compared with a rubbing-aligned VA-LCD; this is considered to be due to the alignment of LC molecules.

AB - The electro-optical characteristics of the photo-aligned vertical-alignment liquid crystal display (VA-LCD) with a non-polarized UV exposure of 45° on homeotropic polyimide (PI) surface was investigated. The domain size of the photo-aligned VA-LCD increases proportionately with the UV exposure time. The LC alignment of the photo-aligned VA-LCD is attributed to photo-dissociation of the polymer by UV exposure on the homeotropic PI surface. Good voltage-transmittance characteristics of the photo-aligned VA-LCD without negative compensation film was measured. The response time of the photo-aligned VA-LCD was slow compared with a rubbing-aligned VA-LCD; this is considered to be due to the alignment of LC molecules.

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VL - 27

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JO - Liquid Crystals

JF - Liquid Crystals

IS - 9

ER -

Response time mechanism for a photo-aligned vertical-alignment liquid crystal display on a homeotropic alignment layer

Abstract

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