Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Liquid Crystal Aligning Capabilities on the Photopolymer Based Maleimide

Maleimide계 폴리머를 이용한 액정배향특성

  • 이윤건 (연세대학교 전기전자공학) ;
  • 황정연 (연세대학교 전기전자공학) ;
  • 서대식 (연세대학교 전기전자공학) ;
  • 김준영 (성균관대학교 응용화학부) ;
  • 이재호 (성균관대학교 응용화학부) ;
  • 김태호 (성균관대학교 응용화학부)
  • Published : 2001.11.08
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Abstract

A new photoalignment material PMI5CA, poly{N-(phenyl)maleimide-co-3-[4-(pentyloxy) cinnamate]propyl-2-hydroxy-1-methacrylate}, was synthesized and the electra-optical (EO) characteristics in the vertical-aligned (VA) liquid crystal display (LCD) photo-aligned on the photopolymer surface were studied. Excellent voltage-transmittance(V-T) characteristics in the VA-LCD photoaligned with polarized UV exposure of oblique direction on the pohotopolymer surfaces for 1 min can be achieved. The transmittance of the VA-LCD photoaligned on the photopolymer surface decreased with increasing UV exposure time. We suggest that the decrease of transmittance in the VA-LCD photoaligned on the photopolymer surface is attributed to the dissociation of the ester linkage in the photodimerized cinnamate structure with increasing UV exposure time

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