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

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Generation of Disclination Line Dependent on Liquid Crystal′s Rubbing Direction and Voltage Driving Method in Microdisplays

마이크로디스플레이의 액정 러빙 방향과 전압 인가 방식에 따른 Disclination Line의 생성

  • 정태봉 (전북대학교 신소재공학부) ;
  • 송제훈 (전북대학교 신소재공학) ;
  • 오세태 (전북대학교 신소재공학) ;
  • 이승희 (전북대학교 신소재공학부)
  • Published : 2004.06.01

Abstract

We have studied how liquid crystal's rubbing direction and voltage driving method affect generation of disclination line. At first, generation of disclination line in vertical alignment(VA) cell and VA-twisted nematic(TN) cell has been examined. When liquid crystal's rubbing direction of bottom substrate was 0$^{\circ}$, the degree of generated disclination line was the smallest value. Further, the generation of disclination line above the electrode is less in the frame inversion than in the line inversion. Secondly, we have examined a generation of disclination line in reflective fringe-field switching cell. When the distance between common electrodes is over 3 ${\mu}{\textrm}{m}$ with on-state of one pixel and off-state of neighboring pixels, the reflectance appears only on-state pixel without generating reflectance in adjacent pixels.

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