Abstract

Novel vertical alignment (VA) mode is presented for fast response and wide viewing angle in the LCD panel. The key concept of the new mode is that the pre-tilt for fast response and multi-domain is generated in the surface of alignment layer composed of vertical alignment part and photo-reactive moiety. The UV treatment of the new alignment layer under applied voltage provides fast control of liquid crystal texture and wide viewing angle in liquid crystal display. Because of the uniform distribution of the reactive monomer (RM) and inherent prevention of the RM migration in the LC cell, the enhanced picture quality and reliability in the LCD TV panel are achieved.

© 2012 IEEE

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  1. S. T. Wu, "Film-compensated homeotropic liquid-crystal cell for direct view display," J. Appl. Phys. 76, 5975-5980 (1994).
  2. S. C. A. Lien, C. Cai, R. W. Nunes, R. A. John, E. A. Galligan, E. Colgan, J. S. Wilson, "Multi-domain homeotropic liquid crystal display based on ridge and fringe field structure," Jpn. J. Appl. Phys. 37, 597-599 (1998).
  3. C. Cai, A. Lien, P. S. Andry, P. Chaudhari, R. A. John, E. A. Galligan, J. A. Lacey, H. Ifill, W. S. Graham, R. D. Allen, "Dry vertical alignment method for multi-domain homeotropic thin-film-transistor liquid crystal displays," Jpn. J. Appl. Phys. 40, 6913-6917 (2001).
  4. S. S. Kim, B. H. Berkeley, K. H. Kim, J. K. Song, "New technologies for advanced LCD-TV performance," J. Soc. Inf. Display 12, 353-359 (2004).
  5. J. J. Lyu, J. Sohn, H. Y. Kim, S. H. Lee, "Recent trends on patterned vertical alignment (PVA) and fringe-field switching (FFS) liquid crystal displays for liquid crystal television applications," J. Display Technol. 3, 404-412 (2007).
  6. K. Miyachi, K. Kobayashi, Y. Yamada, S. Mizushima, "The world's first photo alignment LCD technology applied to generation ten factory," SID Symp. Dig. (2010) pp. 579-582.
  7. S. G. Kim, S. M. Kim, Y. S. Kim, H. K. Lee, S. H. Lee, G. D. Lee, J. J. Lyu, K. H. Kim, "Stabilization of the liquid crystal director in the patterned vertical alignment mode through formation of pretilt angle by reactive mesogen," Appl. Phys. Lett. 90, 261910 (2007).
  8. S. G. Kim, S. M. Kim, Y. S. Kim, H. K. Lee, S. H. Lee, J. J. Lyu, K. H. Kim, R. Lu, S. T. Wu, "Trapping of defect point to improve response time via controlled azimuthal anchoring in a vertically aligned liquid crystal cell with polymer wall," J. Phys. D: Appl. Phys. 41, 55401 (2008).
  9. S. H. Lee, S. M. Kim, S. T. Wu, "Emerging vertical-alignment liquid-crystal technology associated with surface modification using UV-curable monomer," J. Soc. Inf. Display 17, 551-559 (2009).
  10. Y. J. Lee, Y. K. Kim, S. I. Jo, J. S. Gwag, C. J. Yu, J. H. Kim, "Surface-controlled patterned vertical alignment mode with reactive mesogen," Opt. Exp. 17, 10298-10303 (2009).
  11. Y. J. Lee, Y. K. Kim, S. I. Jo, K. S. Bae, B. D. Choi, J. H. Kim, C. J. Yu, "Fast vertical alignment mode with continuous multi-domains for a liquid crystal display," Opt. Exp. 17, 23417-23422 (2009).
  12. Y. J. Lee, S. I. Jo, J. H. Kim, C. J. Yu, "Fast eight-domain patterned vertical alignment mode with reactive mesogen for a single-transistor-driving," Jpn. J. Appl. Phys. 49, 030209 (2010).
  13. J. J. Lyu, H. Kikuchi, D. H. Kim, J. H. Lee, K. H. Kim, H. Higuchi, S. H. Lee, "Phase separation of monomer in liquid crystal mixtures and surface morphology in polymer-stabilized vertical alignment liquid crystal displays," J. Phys. D: Appl. Phys. 44, 325104 (2011).

2011

J. J. Lyu, H. Kikuchi, D. H. Kim, J. H. Lee, K. H. Kim, H. Higuchi, S. H. Lee, "Phase separation of monomer in liquid crystal mixtures and surface morphology in polymer-stabilized vertical alignment liquid crystal displays," J. Phys. D: Appl. Phys. 44, 325104 (2011).

2010

Y. J. Lee, S. I. Jo, J. H. Kim, C. J. Yu, "Fast eight-domain patterned vertical alignment mode with reactive mesogen for a single-transistor-driving," Jpn. J. Appl. Phys. 49, 030209 (2010).

2009

S. H. Lee, S. M. Kim, S. T. Wu, "Emerging vertical-alignment liquid-crystal technology associated with surface modification using UV-curable monomer," J. Soc. Inf. Display 17, 551-559 (2009).

Y. J. Lee, Y. K. Kim, S. I. Jo, J. S. Gwag, C. J. Yu, J. H. Kim, "Surface-controlled patterned vertical alignment mode with reactive mesogen," Opt. Exp. 17, 10298-10303 (2009).

Y. J. Lee, Y. K. Kim, S. I. Jo, K. S. Bae, B. D. Choi, J. H. Kim, C. J. Yu, "Fast vertical alignment mode with continuous multi-domains for a liquid crystal display," Opt. Exp. 17, 23417-23422 (2009).

2008

S. G. Kim, S. M. Kim, Y. S. Kim, H. K. Lee, S. H. Lee, J. J. Lyu, K. H. Kim, R. Lu, S. T. Wu, "Trapping of defect point to improve response time via controlled azimuthal anchoring in a vertically aligned liquid crystal cell with polymer wall," J. Phys. D: Appl. Phys. 41, 55401 (2008).

2007

J. J. Lyu, J. Sohn, H. Y. Kim, S. H. Lee, "Recent trends on patterned vertical alignment (PVA) and fringe-field switching (FFS) liquid crystal displays for liquid crystal television applications," J. Display Technol. 3, 404-412 (2007).

S. G. Kim, S. M. Kim, Y. S. Kim, H. K. Lee, S. H. Lee, G. D. Lee, J. J. Lyu, K. H. Kim, "Stabilization of the liquid crystal director in the patterned vertical alignment mode through formation of pretilt angle by reactive mesogen," Appl. Phys. Lett. 90, 261910 (2007).

2004

S. S. Kim, B. H. Berkeley, K. H. Kim, J. K. Song, "New technologies for advanced LCD-TV performance," J. Soc. Inf. Display 12, 353-359 (2004).

2001

C. Cai, A. Lien, P. S. Andry, P. Chaudhari, R. A. John, E. A. Galligan, J. A. Lacey, H. Ifill, W. S. Graham, R. D. Allen, "Dry vertical alignment method for multi-domain homeotropic thin-film-transistor liquid crystal displays," Jpn. J. Appl. Phys. 40, 6913-6917 (2001).

1998

S. C. A. Lien, C. Cai, R. W. Nunes, R. A. John, E. A. Galligan, E. Colgan, J. S. Wilson, "Multi-domain homeotropic liquid crystal display based on ridge and fringe field structure," Jpn. J. Appl. Phys. 37, 597-599 (1998).

1994

S. T. Wu, "Film-compensated homeotropic liquid-crystal cell for direct view display," J. Appl. Phys. 76, 5975-5980 (1994).

Appl. Phys. Lett.

S. G. Kim, S. M. Kim, Y. S. Kim, H. K. Lee, S. H. Lee, G. D. Lee, J. J. Lyu, K. H. Kim, "Stabilization of the liquid crystal director in the patterned vertical alignment mode through formation of pretilt angle by reactive mesogen," Appl. Phys. Lett. 90, 261910 (2007).

J. Appl. Phys.

S. T. Wu, "Film-compensated homeotropic liquid-crystal cell for direct view display," J. Appl. Phys. 76, 5975-5980 (1994).

J. Display Technol.

J. J. Lyu, J. Sohn, H. Y. Kim, S. H. Lee, "Recent trends on patterned vertical alignment (PVA) and fringe-field switching (FFS) liquid crystal displays for liquid crystal television applications," J. Display Technol. 3, 404-412 (2007).

J. Phys. D: Appl. Phys.

J. J. Lyu, H. Kikuchi, D. H. Kim, J. H. Lee, K. H. Kim, H. Higuchi, S. H. Lee, "Phase separation of monomer in liquid crystal mixtures and surface morphology in polymer-stabilized vertical alignment liquid crystal displays," J. Phys. D: Appl. Phys. 44, 325104 (2011).

J. Phys. D: Appl. Phys.

S. G. Kim, S. M. Kim, Y. S. Kim, H. K. Lee, S. H. Lee, J. J. Lyu, K. H. Kim, R. Lu, S. T. Wu, "Trapping of defect point to improve response time via controlled azimuthal anchoring in a vertically aligned liquid crystal cell with polymer wall," J. Phys. D: Appl. Phys. 41, 55401 (2008).

J. Soc. Inf. Display

S. H. Lee, S. M. Kim, S. T. Wu, "Emerging vertical-alignment liquid-crystal technology associated with surface modification using UV-curable monomer," J. Soc. Inf. Display 17, 551-559 (2009).

S. S. Kim, B. H. Berkeley, K. H. Kim, J. K. Song, "New technologies for advanced LCD-TV performance," J. Soc. Inf. Display 12, 353-359 (2004).

Jpn. J. Appl. Phys.

Y. J. Lee, S. I. Jo, J. H. Kim, C. J. Yu, "Fast eight-domain patterned vertical alignment mode with reactive mesogen for a single-transistor-driving," Jpn. J. Appl. Phys. 49, 030209 (2010).

S. C. A. Lien, C. Cai, R. W. Nunes, R. A. John, E. A. Galligan, E. Colgan, J. S. Wilson, "Multi-domain homeotropic liquid crystal display based on ridge and fringe field structure," Jpn. J. Appl. Phys. 37, 597-599 (1998).

Jpn. J. Appl. Phys.

C. Cai, A. Lien, P. S. Andry, P. Chaudhari, R. A. John, E. A. Galligan, J. A. Lacey, H. Ifill, W. S. Graham, R. D. Allen, "Dry vertical alignment method for multi-domain homeotropic thin-film-transistor liquid crystal displays," Jpn. J. Appl. Phys. 40, 6913-6917 (2001).

Opt. Exp.

Y. J. Lee, Y. K. Kim, S. I. Jo, J. S. Gwag, C. J. Yu, J. H. Kim, "Surface-controlled patterned vertical alignment mode with reactive mesogen," Opt. Exp. 17, 10298-10303 (2009).

Y. J. Lee, Y. K. Kim, S. I. Jo, K. S. Bae, B. D. Choi, J. H. Kim, C. J. Yu, "Fast vertical alignment mode with continuous multi-domains for a liquid crystal display," Opt. Exp. 17, 23417-23422 (2009).

Other

K. Miyachi, K. Kobayashi, Y. Yamada, S. Mizushima, "The world's first photo alignment LCD technology applied to generation ten factory," SID Symp. Dig. (2010) pp. 579-582.

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