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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Electro-Optic Characteristics on Photoaligned TN cell using Photopolymer Based Hydroxy Aromatic Polyimide

Hydroxy Aromatic Polyimide계 광폴리머 표면을 이용한 광배향 TN 셀의 전기광학 특성

  • 이휘원 (연세대학교 전기전자공학과) ;
  • 황정연 (연세대학교 전기전자공학과) ;
  • 최성호 (연세대학교 전기전자공학과) ;
  • 강형구 (연세대학교 전기전자공학과) ;
  • 배유한 (연세대학교 전기전자공학과) ;
  • 최면길 (한양대학교 응용화학공학과) ;
  • 서동학 (한양대학교 응용화학공학과) ;
  • 서대식 (연세대학교 전기전자공학과)
  • Published : 2005.05.13
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Abstract

We synthesized the two types of photoalignment material of high thermal resistance with hydroxyl aromatic polyimide, and studied the liquid crystal (LC) aligning capabilities on the photopolymer layers. Also, electro-optical (EO) performances for the twisted-nematic (TN)-liquid crystal display (LCD) photoaligned with linearly polarized UV exposure were investigated. A good LC alignment with UV exposure on the two types of photopolymer surface can be obtained. The Voltage-transmittance (V-T) curve in the photoaligned TN cell with UV exposure was different from two type. The response time of photoaligned TN cell was measured about 21 ms in two alkyl chain and about 15ms in four alkyl chain.

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