한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제17권2호
  • /
  • Pages.201-206
  • /
  • 2004
  • /
  • 1226-7945(pISSN)
  • /
  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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Fringe-Field 구동형 반사형 Hybrid Aligned Nematic 액정 디스플레이의 전기-광학 특성

Electro-Optic Characteristics of the Fringe-Field driven Reflective Hybrid Aligned Nematic Liquid Crystal Display

  • 정태봉 (전북대학교 신소재공학부) ;
  • 박지혁 (전북대학교 신소재공학부) ;
  • 손정석 (전북대학교 신소재공학부) ;
  • 송제훈 (전북대학교 신소재공학부) ;
  • 이승희 (전북대학교 신소재공학부)
  • 발행 : 2004.02.01
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초록

We have performed computer simulation and experiment to obtain electro-optic characteristics of reflective hybrid aligned nematic (R-HAN) cell driven by fringe field, in which the cell consists of polarizer, optical compensation film, LC layer and reflector. Conventional R-HAN cell driven by fringe field using only the LC layer shows high wavelength dispersion at dark-state and thus viewing angle characteristic is strongly wavelength-dependent. In order to improve this demerit, we added one optical compensation film to conventional R-HAN cell. The display with optimized cell parameters shows low wavelength dispersion at dark-state and exhibits a wide viewing angle without the occurrence of grey scale inversion over a wide range of viewing angles and the contrast ratio greater than 5 over exists about 120$^{\circ}$ in vortical direction and 160$^{\circ}$in horizontal direction. Experimental results show good agreements with theoretical results and fast response time.

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참고문헌

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