Transactions on Electrical and Electronic Materials

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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LC Aligning Capabilities of a Nematic Liquid Crystal on Homeotropic Polyimide Surface by New Ion-beam Irradiation

  • Ok, Chul-Ho (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Kang, Dong-Hun (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Lee, Kang-Min (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Han, Jin-Woo (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Kim, Byoung-Yong (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Oh, Byeong-Yun (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Kim, Young-Hwan (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Hwang, Jeong-Yeon (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Lee, Sang-Keuk (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Han, Jeong-Min (Department of Electrical and Electronics Engineering, Yonsei University) ;
  • Seo, Dae-Shik (Department of Electrical and Electronics Engineering, Yonsei University)
  • Published : 2007.12.31
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Abstract

The liquid crystal(LC) aligning capabilities of a nematic liquid crystal(NLC) on a homeotropic polyimide(PI) surface using a new ion-beam method were studied. Exposure ion-beam of $45^{\circ}$ incidence angle shows a good LC alignment of the NLC on the homeotropic PI surface. Also, on the homeotropic PI surface, the tilt angle of the NLC by exposure ion-beam of $45^{\circ}$ incidence angle had a tendency to decrease as increased ion-beam energy density. And, on the homeotropic PI surface, the alignment character of the NLC with respect to ion-beam energy was good at 1500 eV. And we achieved satisfactory result for EO character.

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References

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