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A Study on Electro-Optical Characteristics of the TN Cell Photoaligned on the Ν-(phenyl)maleimide Surface using the UVLPH Photodimerization Method

Ν-(phenyl)maleimide 표면에 UVLPH 광중합법을 이용한 광배향 TN 셀의 전기광학특성에 관한 연구

  • 황정연 (연세대학교 전기전자공학과) ;
  • 김준영 (성균관대학교 응용화학부 고분자시스템) ;
  • 김태호 (성균관대학교 응용화학부 고분자시스템) ;
  • 서대식 (연세대학교 전기전자공학과) ;
  • 김영식 (단국대학교 첨단과학부 전자물리과)
  • Published : 2002.08.01

Abstract

Electro-optical (EO) performances for the twisted-nematic (TN)-liquid crystal display (LCD) photoaligned with linearly polarized UV exposure on the poly[4- (fluorocinnamate) phenylmaleimide](PFCPMI) surfaces using a new photodimerization method were investigated. For a new UVLPH (UV linearly polarized during heating) photodimerization method, the photopolymer layers were exposed by linearly polarized UV dichroic polarizer without a specific UV filter during heating at $150^{\circ}C$. The Voltage-transmittance (V-T) curve without backflow bounce in the photoaligned TN-LCD with UV exposure on the PFCPMI surface for 10 min using the UVLPH photodimerization method was observed. For response time measurement, the transmittance characteristics of the photoaligned TN-LCD using the UVLPH photodimerization method on the photopolymer surface was better than that of the photoaligned TN-LCD using the UVLP photodimerization method under a room temperature.

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