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Liquid Crystal Alignment Effects using a Diamond-like Carbon Thin Film

Diamond-like Carbon 박막을 이용한 액정 배향 효과

  • 황정연 (연세대학교 전기전자공학과) ;
  • 조용민 (연세대학교 전기전자공학과) ;
  • 서대식 (연세대학교 전기전자공학과) ;
  • 노순준 (연세대학교 재료공학과) ;
  • 이대규 (연세대학교 재료공학과)
  • Published : 2002.05.01

Abstract

We studied the nematic liquid crystal (NLC) aligning capabilities using the new alignment material of a diamond like carbon (DLC) thin film. A high pretilt angle of about $3.5^{\circ}$ by ion beam(IB) exposure on the DLC thin film surface was measured. A good LC alignment by the IB alignment method on the DLC thin film surface was observed at annealing temperature of $200^{\circ}C$, and the alignment defect of the NLC was observed above annealing temperature of $220^{\circ}C$. Consequently, the high NLC pretilt angle and the good thermal stability of LC alignment by the IB alignment method on the DLC thin film surface can be achieved.

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