Liquid-crystal aligning capabilities using a new photodimerization method on a poly (4′-methacryloyloxy chalcone) surface

Dae Shik Seo, Jeoung Yeon Hwang

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Abstract

The effects of liquid-crystal (LC) alignment and electro-optical (EO) characteristics of photoaligned twisted-nematic (TN)-LC display (LCD) on a PMCh (poly (4′-methacryloyloxy chalcone)) surface using a new photodimerization method were investigated. Photopolymer layers were exposed by linearly polarized UV during heating at 100 °C. Excellent voltage-transmittance (V-T) of photodimerized TN-LCD on the PMCh surface for 1 min using the new photodimerization method was observed. The voltage-holding ratio (VHR) of the photodimerized TN-LCD on the PMCh surface using the new photodimerization method is higher than that of the conventional photodimerization method. We suggest that the new photodimerization method for LC aligning is the most promising rubbing-free technique.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume39
Issue number8 A
Publication statusPublished - 2000 Aug 1

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liquid crystals
photopolymers
electric potential
transmittance
alignment
heating

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

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title = "Liquid-crystal aligning capabilities using a new photodimerization method on a poly (4′-methacryloyloxy chalcone) surface",
abstract = "The effects of liquid-crystal (LC) alignment and electro-optical (EO) characteristics of photoaligned twisted-nematic (TN)-LC display (LCD) on a PMCh (poly (4′-methacryloyloxy chalcone)) surface using a new photodimerization method were investigated. Photopolymer layers were exposed by linearly polarized UV during heating at 100 °C. Excellent voltage-transmittance (V-T) of photodimerized TN-LCD on the PMCh surface for 1 min using the new photodimerization method was observed. The voltage-holding ratio (VHR) of the photodimerized TN-LCD on the PMCh surface using the new photodimerization method is higher than that of the conventional photodimerization method. We suggest that the new photodimerization method for LC aligning is the most promising rubbing-free technique.",
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AB - The effects of liquid-crystal (LC) alignment and electro-optical (EO) characteristics of photoaligned twisted-nematic (TN)-LC display (LCD) on a PMCh (poly (4′-methacryloyloxy chalcone)) surface using a new photodimerization method were investigated. Photopolymer layers were exposed by linearly polarized UV during heating at 100 °C. Excellent voltage-transmittance (V-T) of photodimerized TN-LCD on the PMCh surface for 1 min using the new photodimerization method was observed. The voltage-holding ratio (VHR) of the photodimerized TN-LCD on the PMCh surface using the new photodimerization method is higher than that of the conventional photodimerization method. We suggest that the new photodimerization method for LC aligning is the most promising rubbing-free technique.

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