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Simulation for Electro-Optic Characteristics of the Fringe-Field Driven Reflective Hybrid Aligned Nematic Liquid Crystal Display with One Polarizer

1매의 편광판으로 구성된 Fringe-Field 구동형 반사형 Hybrid Aligned Nematic 액정디스플레이의 전기-광학 특성에 관한 시뮬레이션

  • 박지혁 (전북대학교 신소재공학부) ;
  • 정태봉 (전북대학교 신소재공학부) ;
  • 이종문 (전북대학교 신소재공학부) ;
  • 김용배 (건국대학교 화학과) ;
  • 이승희 (전북대학교 신소재공학부)
  • Published : 2003.10.01

Abstract

We have performed computer simulation to obtain electro-optic characteristics of reflective hybrid aligned nematic liquid crystal displays (LCDs) driven by fringe field. The results show that the optimal retardation value (dΔn) of the cell is 0.289 ${\mu}$m, which allows for the cell to have a practical cell gap of larger than 3 ${\mu}$m when manufacturing. A reflectance of the dark state is only 0.114 % for an incident light 550 nm. At this condition, the light efficiency of white state reaches 92.7 %. The display with optimized cell parameters shows that the contrast ratio greater than 5 exists over 600 of polar angle in all directions and lower driving voltage than that of fringe-field driven homogeneously aligned reflective LCD.

Keywords

Reflective liquid crystal display;Fringe-field switching;Hybrid aligned nematic

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