Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Effect of Liquid Crystal Alignment for Photo-Aligned VA-LCD on the Photo-Dimerized Polymer Surface

  • Hwang, Jeoung-Yeon (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Seo, Dae-Shik (Department of Electrical & Electronic Engineering, Yonsei University)
  • Received : 2000.07.25
  • Published : 2001.03.01
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Abstract

A photopolymer, copoly (M4Ch-ChMA), copoly ((4-methacryloyloxy) chalcone-cholesteryl methacrylate), was synthesized in this study. The electro-optical (EO) characteristics for the photo-aligned vertical-alignment (VA)-liquid crystal display (LCD) were investigated. Excellent voltage-transmittance curves for the VA-LCD photo-aligned by polarized UV exposure on the copoly (M4Ch-ChMA) surface were observed. The response time for the photo-aligned VA-LCD decrease with increasing UV exposure time. consequently, the photo-dimerized chalcone moiety increased with increasing UV exposure time, which then contributed to a low response time for the VA-LCD photo-aligned.

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