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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Control of Pretilt Angle using a in-situ Photoalignment Method on Photo-Crosslinkable Polymer Surface

광중합 가능한 폴리머 표면에 in-situ 광배향법을 이용한 프리틸트각 제어

  • 정은아 (연세대학교 전기전자 공학과) ;
  • 황정연 (연세대학교 전기전자 공학과) ;
  • 서대식 (연세대학교 전기전자 공학과) ;
  • 김재형 (인제대학교 물리학과) ;
  • 한은주 (수원대학교 물리학과)
  • Published : 2001.11.08
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Abstract

Aligning capabilities for nematic liquid crystal (NLC) using a in-situ photodimerization method on various photo-crosslinkable polyimide (PI) based polymer and blending photopolymer surfaces were stuided. High pretilt angle of the NLC can be measured by obliquely polarized UV exposure on a photo-crosslinkable polyirnide based polymer surface containing biphenyl (BP), decyl (de), and cholesteryl (chol) group, respectively, However, the low pretilt angle of the NLC was measured by obliquely polarized UV exposure on the blending photopolymer (PI and cinnamate materials) surfaces. Consequently, the pretilt angle of the NLC generated on the photo-crosslinkable polyimide based polymer surfaces using the in-situ photodimerization method was higher than that of the blending photopolymers.

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