Transactions on Electrical and Electronic Materials

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Controllable Pretilt Angles for Liquid Crystal Molecules using a Rubbing Treated Mixture Layer

  • Kim, Dae-Hyun (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Park, Hong-Gyu (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Young-Hwan (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Byoung-Yong (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Ok, Chul-Ho (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Seo, Dae-Shik (Department of Electrical and Electronic Engineering, Yonsei University)
  • Published : 2009.08.31
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Abstract

We have investigated the continuous pretilt angle generation for liquid crystals using a rubbing treated mixture layer consisting of homogeneous and homeotropic polyimides. Various pretilt angles in the range from $0^{\circ}$ to $60^{\circ}$ were achieved as a function of the concentration of homeotropic PI. The transmittance characteristics used to measure the pretilt angle showed that the pretilt angles were measured with a high reliability. We observed uniform liquid crystal alignment on the rubbing treated mixture layer.

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References

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