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Research Paper

Journal of the Optical Society of Korea 2001; 5(1): 16-19

Published online March 1, 2001 https://doi.org/10.3807/JOSK.2001.5.1.016

Copyright © Optical Society of Korea.

Effect of Liquid Crystal Alignment for Photo-Aligned VA-LCD on the Photo-Dimerized Polymer Surface

Jeoung-Yeon Hwang and Dae-Shik Seo

Department of Electrical & Electronic Engineering, Yonsei University

Received: July 25, 2000

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

OCIS codes: 160.3710; 160.5470; 220.1140; 230.3720

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