Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Study on of polarity effect on alignment film in transcription-aligned TN-LCD

전사배향 TN-LCD 에서의 배향막의 극성효과에 관한 연구

  • Kim, Jin-Ho (Department of Electrical Eng., College of Eng., Soongsil University) ;
  • Seo, Dae-Shik (Department of Electrical Eng., College of Eng., Soongsil University)
  • 김진호 (숭실대학교 공과대학 전기공학과) ;
  • 서대식 (숭실대학교 공과대학 전기공학과)
  • Published : 1999.07.19
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Abstract

The effects of polarity of the polymer on transcription-aligned twisted nematic (TN)-liquid crystal display (LCD) on various the polyimide (PI) surfaces were investigated. The monodomain alignment of nematic (N)LC is obtained in cells fabricated by transcription alignment method on PI surface with medium polarity. The LC alignment using transcription alignment method is attributed to polarity of the polymer. The threshold voltage of transcription-aligned TN-LCD decreases with increasing the polarity of the polymer on three kinds of the PI surfaces. The threshold voltage of transcription-aligned TN-LCD on PI surface with high polarity is almost the same compared to rubbing-aligned TN-LCD. The response time of transcription-aligned TN-LCD decreases with the increasing the polarity of the polymer on all PI surfaces. The decay time of transcription-aligned TN-LCD is slow compared with the rubbing-aligned TN-LCD.

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