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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A Study on wide viewing angle and fast response time using new VA-$\pi$ cell mode

새로운 VA-$\pi$ 셀 모드를 이용한 광시야각과 고속 응답에 관한 연구

  • 서대식 (연세대학교 전기·컴퓨터공학과) ;
  • 이정호 (숭실대학교 전기공학과)
  • Published : 2000.04.01
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Abstract

We have developed a novel vertical-alignment(VA) -$\pi$ cell mode that provides a wide viewing angle and fast response times for nematic liquid crystal(NLC) with negative dielectric anisotropy on a homeotropic polymide(PI) surfaces. Good voltage-transmittance curves and low driving voltages were achieved with the new VA-$\pi$ cell mode without a negative compensation film. Iso-viewing angle characteristics using the new VA-$\pi$ cell mode without a negative compensation film was also successfully observed. As well a fast response time of 31.7 ms for a new VA-$\pi$ mode was measured. Consequently the iso-viewing angel fast response time and low driving voltage characteristics using a VA-$\pi$ cell can be achieved.

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References

  1. SDI 98 digest Optical design for wide-viewing-angle TN-LCD with hybrid aligned nematic compensation films T. Toyooka;E. Yoda;Y. Kobori;T. Yamanashi;H. Itoh
  2. Appl. Phys. lett. v.67 UV-modification of surface pretilt of alignment layers for multidomain liquid crystal displays A. Lien;A. John;M. Angelopoulos;K. -W. Lee
  3. Appl. Phys. lett. v.69 Response mechanism of nematic liquid crystal using the in-plane switching mode M. Oh-e;K. Kondo
  4. IDW'97 A vertically aligned LCD providing super-high image quality Y. Koike;S. Kataoka;T. Sasaki;H. Chida;A. Takeda;.K Ohmuro;T. Sasabayashi;K. Okamoto
  5. Jpn. J. Appl. Phys. v.34 Wide-viewing-angle display mode using bend-alignment liquid crystal liquid crystal cell T. Miyashita;Y. Yamaguchi;T. Uchida
  6. 전기전자재료학회논문지 v.12 no.2 Effect of NLCs on polar anchoring energy and pretilt angle for three kinds of the rubbed polymer layers D. -S. Seo
  7. 전기전자재료학회 v.10 no.9 폴리이미드막에 있어서 네마틱 액정의 메모리 효과를 이용한 전사배향법에 관한 연구 서대식;김진호;이정호;이보호
  8. 전기전자재료학회논문지 v.12 no.12 전사배향 TN-LCD의 액정배향 및 전기광학 특성 서대식;김진호