Electro-optical characteristics of photo-aligned vertical-alignment cells on photo-crosslinkable copolymer surfaces containing the cholesteryl moiety

Jeoung Yeon Hwang; Dae Shik Seo; Eun Joo Hahn

doi:10.1080/02678290110114882

Electro-optical characteristics of photo-aligned vertical-alignment cells on photo-crosslinkable copolymer surfaces containing the cholesteryl moiety

Jeoung Yeon Hwang, Dae Shik Seo, Eun Joo Hahn

Department of Electrical and Electronic Engineering

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

1 Citation (Scopus)

Abstract

The electro-optical (EO) performances of a photoaligned vertical-alignment liquid crystal display (VA-LCD) on a copoly(4-methacryloyloxychalcone-cholesteryl methacrylate) surface for homeotropic LC alignment were studied. Good thermal stability of the synthesized photo-crosslinkable copolymer was seen during thermogravimetric analysis. A good voltage-transmittance curve and fast response time achieved in the photoaligned VA-LCD with obliquely polarized UV exposure at 30° from the vertical on the photo-crosslinkable copolymer surfaces. The EO characteristics of the photoaligned VA-LCD decreased after long time UV exposure because of dissociation of the ester linkage in the chalcone structure of the photo-crosslinkable polymer.

Original language	English
Pages (from-to)	567-572
Number of pages	6
Journal	Liquid Crystals
Volume	29
Issue number	4
DOIs	https://doi.org/10.1080/02678290110114882
Publication status	Published - 2002

All Science Journal Classification (ASJC) codes

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

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title = "Electro-optical characteristics of photo-aligned vertical-alignment cells on photo-crosslinkable copolymer surfaces containing the cholesteryl moiety",

abstract = "The electro-optical (EO) performances of a photoaligned vertical-alignment liquid crystal display (VA-LCD) on a copoly(4-methacryloyloxychalcone-cholesteryl methacrylate) surface for homeotropic LC alignment were studied. Good thermal stability of the synthesized photo-crosslinkable copolymer was seen during thermogravimetric analysis. A good voltage-transmittance curve and fast response time achieved in the photoaligned VA-LCD with obliquely polarized UV exposure at 30° from the vertical on the photo-crosslinkable copolymer surfaces. The EO characteristics of the photoaligned VA-LCD decreased after long time UV exposure because of dissociation of the ester linkage in the chalcone structure of the photo-crosslinkable polymer.",

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year = "2002",

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T1 - Electro-optical characteristics of photo-aligned vertical-alignment cells on photo-crosslinkable copolymer surfaces containing the cholesteryl moiety

AU - Hwang, Jeoung Yeon

AU - Seo, Dae Shik

AU - Hahn, Eun Joo

PY - 2002

Y1 - 2002

N2 - The electro-optical (EO) performances of a photoaligned vertical-alignment liquid crystal display (VA-LCD) on a copoly(4-methacryloyloxychalcone-cholesteryl methacrylate) surface for homeotropic LC alignment were studied. Good thermal stability of the synthesized photo-crosslinkable copolymer was seen during thermogravimetric analysis. A good voltage-transmittance curve and fast response time achieved in the photoaligned VA-LCD with obliquely polarized UV exposure at 30° from the vertical on the photo-crosslinkable copolymer surfaces. The EO characteristics of the photoaligned VA-LCD decreased after long time UV exposure because of dissociation of the ester linkage in the chalcone structure of the photo-crosslinkable polymer.

AB - The electro-optical (EO) performances of a photoaligned vertical-alignment liquid crystal display (VA-LCD) on a copoly(4-methacryloyloxychalcone-cholesteryl methacrylate) surface for homeotropic LC alignment were studied. Good thermal stability of the synthesized photo-crosslinkable copolymer was seen during thermogravimetric analysis. A good voltage-transmittance curve and fast response time achieved in the photoaligned VA-LCD with obliquely polarized UV exposure at 30° from the vertical on the photo-crosslinkable copolymer surfaces. The EO characteristics of the photoaligned VA-LCD decreased after long time UV exposure because of dissociation of the ester linkage in the chalcone structure of the photo-crosslinkable polymer.

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M3 - Article

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JO - Liquid Crystals

JF - Liquid Crystals

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ER -

Electro-optical characteristics of photo-aligned vertical-alignment cells on photo-crosslinkable copolymer surfaces containing the cholesteryl moiety

Abstract

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