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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Pretilt Angle Dependent Electro-Optic Characteristics of the Fringe-Field Switching mode using the Liquid Crystal with Positive Dielectric Anisotropy

유전율 이방성이 양인 액정을 이용한 프린지 필드 구동형 모드에서 프리틸트각 변화에 따른 전기-광학 특성

  • 정태봉 (전북대학교 신소재공학부) ;
  • 임영진 (전북대학교 신소재공학부) ;
  • 안명환 (여수대학교 반도체 응용물리학과) ;
  • 이승희 (전북대학교 신소재공학부)
  • Published : 2004.03.01
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Abstract

We have studied electro-optic characteristics as a function of pretilt angle ($\theta$$_{p}$) in the fringe-field switching (FFS) mode using the LC with positive dielectric anisotropy. When $\theta$$_{p}$ is increased from 0$^{\circ}$ to 20$^{\circ}$, a maximum transmittance and an operating voltage are obviously decreased. In the viewing angle characteristics, the cell with low pretilt angle has a wide region for the contrast ratio greater than 5 and has a best luminance uniformity. Therefore, in the FFS device, a low pretilt angle is favored for high transmittance and wide viewing angle.gle.

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References

  1. Appl. Phys. Lett. v.18 no.4 Voltage-dependent optical activity of twisted nematic liquid crystal M.Schadt;W.Helfrich https://doi.org/10.1063/1.1653593
  2. Jpn. J. Appl. Phys. v.36 Light behavior analysis of twisted nematic liquid crystal H.Yoshida;J.Kelly https://doi.org/10.1143/JJAP.36.2116
  3. Jpn. J. Appl. Phys. v.36 no.11 Quantitative analysis of cell gap margin for uniform optical properties M.Oh-E;K.Kondo https://doi.org/10.1143/JJAP.36.6798
  4. Trans. on EEM. v.4 no.1 Rubbing angle effects on the electro-optic characteristics of in-plane switching liquid crystal display H.Y.Kim;I.S.Song;S.H.Lee
  5. Asia Display'98 High transmittance, wide-viewing-angle nematic liquid crystal display controlled by fringe-field switching S.H.Lee;S.L.Lee;H.Y.Kim
  6. Jpn. J. Appl. Phys. v.39 no.6A Electro-optic characteristics of fringe-field switching mode depending on rubbing direction S.H.Hong;I.C.Park;H.Y.Kim;S.H.Lee https://doi.org/10.1143/JJAP.39.L527
  7. SID'01 Digest Ultra-FFs TFT-LCD with super image quality, fast response time, and strong pressure-resistant characteristics S.H.Lee;H.Y.Kim;S.M.Lee;S.H.Hong;J.M.Kim;J.W.Koh;J.Y.Lee;H.S.Park
  8. 전기전자재료학회논문지 v.15 no.1 유전율 이방성이 음인 액정을 이용한 이중 도메인 FFS 모드의 전기광학 특성 김향율;고재완;노정동;서대식;이승희
  9. 전기전자재료학회논문지 v.16 no.2 1매의 편광판으로 구성된 반사형 Fringe-Field Switching mode의 전기 광학 특성 정태봉;박지혁;이종문;김용배;이승희
  10. 전기전자재료학회논문지 v.16 no.6 Fringe-Field 구동형 새로운 반투과형 수평 배향 액정 디스플레이 정태봉;이승희
  11. Jpn. J. App.. Phys. v.42 no.6A Wide-viewing-angle transflective display associated with a fringe-field driven homogeneously aligned nematic liquid crystal display T.B.Jung;J.C.Kim;S.H.Lee https://doi.org/10.1143/JJAP.42.L464
  12. Appl. Phys. Lett. v.57 Extended Jones matri representation for twisted nematic liquid crystal display at oblique incidence A.Lien https://doi.org/10.1063/1.103781