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Mechanisms of Pretilt Angle Generation for Nematic Liquid Crystal on Blended Polyimide Surfaces Containing Fluorine Moiety

Fluorine 계열의 폴리머를 함유한 복합 폴리이미드 표면에서의 네마틱 액정의 프리틸트 발생의 메카니즘

  • 황정연 (연세대학교 전기전자공학과) ;
  • 이상극 (광운대학교 전기공학과) ;
  • 서대식 (연세대학교 전기전자공학과)
  • Published : 2002.11.01

Abstract

The mechanisms of pretilt angle generation for a nematic liquid crystal (NLC) with negative dielectric anisotropy on the blended polyimide (PI) surface containing trifluoromethyl moiety were studied. High LC pretilt angle on the blended polymer surface with F3 was measured and the pretilt angle increased with rubbing strength. However, the low LC pretilt angle on the blended polymer surface with F1 and F2 was measured. The high LC pretilt angle generated is attributable to trifluoromethyl moiety in backbone structure on the blended PI surface. Therefore, the high pretilt angle of NLC can be achieved by using the blended polymer surface.

Keywords

References

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