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 Alignment Effects Using a Carbon Nitride Thin Film

Carbon Nitride 박막을 이용한 액정배향 효과

  • 박창준 (연세대학교 전기전자공학과) ;
  • 황정연 (연세대학교 전기전자공학과) ;
  • 강형구 (연세대학교 전기전자공학과) ;
  • 서대식 (연세대학교 전기전자공학과) ;
  • 안한진 (연세대학교 금속공학과) ;
  • 김경찬 (연세대학교 금속공학과) ;
  • 김종복 (연세대학교 금속공학과) ;
  • 백홍구 (연세대학교 금속공학과)
  • Published : 2004.04.30
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Abstract

We studied the nematic liquid crystal (NLC) aligning capabilities using the new alignment material of a Carbon Nitride (NDLC) thin film. NDLC thin film exhibits high electrical resistivity and thermal conductivity that are similar to the properties shown by diamond-like carbon (DLC) thin films. The diamond-like properties and nondiamond-like bonding make NDLC an attractive candidate for applications. A high pretilt angle of about $9.9^{\circ}$ by ion beam (IB) exposure on the NDLC thin film surface was measured. A good LC alignment is achieved by the IB alignment method on the NDLC thin film surface at annealing temperature of $200^{\circ}C$. The alignment defect of the NLC was observed above annealing temperature of $250^{\circ}C$. Consequently, the high pretilt angle and the good LC alignment by the IB alignment method on the NDLC thin film surface can be achieved.

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