Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Liquid Crystal Alignment and Generation of Pretilt Angle by Using Photo-alignment Techniques on Different Polymer Molecules

광배향기술을 이용한 액정배향의 기구 및 폴리이미드의 분자구조가 프리틸트각에 미치는 영향

  • 서대식 (숭실대학교 공대 전기공학과) ;
  • 황율연 (숭실대학교 공대 전기공학과) ;
  • 이창훈 (숭실대학교 공대 전기공학과)
  • Published : 1998.06.01
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Abstract

In this paper, we investigated the liquid crystal(LC) alignment and generation of pretilt angle by using photo-alignment techniques on two kinds of polyimide(PI) surface, It was found that the uniform alignment for nematic(N) LC is obtained in a cell with slanted UV light irradiation on PI surface without side chain. We successfully observed that the pretilt angle of NLC is generated about $3^{\circ}$ with an incident angle of 70 degree on the PI surface without side chain. It is considered that the pretilt angle generation in NLC is attributed to interaction between the LC molecules and the polymer surfaces.

Keywords

References

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