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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 6 — Mar. 17, 2008
  • pp: 3859–3864

Switching of polymer-stabilized vertical alignment liquid crystal cell

Chi -Yen Huang, Wen -Yi Jhuang, and Chia -Ting Hsieh  »View Author Affiliations


Optics Express, Vol. 16, Issue 6, pp. 3859-3864 (2008)
http://dx.doi.org/10.1364/OE.16.003859


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Abstract

This work investigates the switching characteristics of the polymer-stabilized vertical alignment (VA) liquid crystal (LC) cell. The experimental results reveal that the fall time of the cell declines as the monomer concentration increases because the vertically-aligned polymer networks accelerate the relaxation of the LC molecules. Furthermore, the formed polymer networks impede the growth and annihilation of LC defects, suppressing the optical bounce in the time dependent transmittance curve of the cell when the voltage is applied to the cell, substantially reducing the rise time of the cell. A step-voltage driving scheme is demonstrated to eliminate completely the optical bounce and hence improve further the rise time of the VA LC cell. The rise times of the pristine and the polymer-stabilized VA LC cells under the step-voltage driving scheme are less than 50% of those under the conventional driving scheme.

© 2008 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(230.2090) Optical devices : Electro-optical devices
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Optical Devices

History
Original Manuscript: January 18, 2008
Revised Manuscript: March 5, 2008
Manuscript Accepted: March 6, 2008
Published: March 7, 2008

Citation
Chi -Yen Huang, Wen -Yi Jhuang, and Chia -Ting Hsieh, "Switching of polymer-stabilized vertical alignment liquid crystal cell," Opt. Express 16, 3859-3864 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-6-3859


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References

  1. E. Lueder, Liquid Crystal Displays, Addressing Schemes and Electro-optical Effects (John Wiley and Sons, Singapore, 2001).
  2. S. T. Wu and D. K. Yang, Reflective Liquid Crystal Displays (John Wiley and Sons, Singapore, 2001).
  3. K. H. Yang, "Two-domain 80°-twisted nematic liquid crystal display for grayscale applications," Jpn. J. Appl. Phys. 31, L1603 (1992). [CrossRef]
  4. M. Oh-E, K. Kondo, "Response mechanism of nematic liquid crystals using the in-plane switching mode," Appl. Phys. Lett. 69, 623 (1996). [CrossRef]
  5. K. Ohmuro, S. Kataoka, T. Sasaki, and Y. Koike, "Development of super-high-image-quality vertical-alignment-mode LCD," Proc. SID 845 (1997).
  6. K. Hanaoka, Y. Nakanishi, Y. Inoue, S. Tanuma, Y. Koike, and K. Okamoto, "A new MVA-LCD by polymer sustained alignment technology," Proc. SID 1200 (2004). [CrossRef]
  7. P. J. Bos, K. R. Koehler, and Beran, "The pi-cell: a fast liquid-crystal optical-switching device," Mol. Cryst. Liq. Cryst. 113, 329 (1984). [CrossRef]
  8. Q3. S. Onda, T. Miyashita, and T. Uchida, "Mechanism of fast response and recover in bend alignment cell," Mol. Cryst. Liq. Cryst. 331, 383 (1999). [CrossRef]
  9. E. J. Acosta, M. J. Towler, and M. D. Tillin, "Route towards optimization of the response times of a pi-cell liquid-crystal mode," J. Appl. Phys. 97, 093106 (2005). [CrossRef]
  10. S. H. Kim and L. C. Chien, "Electro-optical characteristics and morphology of a bend nematic liquid crystal device having templated polymer fibrils," Jpn. J. Appl. Phys. 43, 7643 (2004). [CrossRef]
  11. C. Y. Huang, R. X. Fung, and Y. G. Lin, "Effects of curing conditions on electrooptical properties of polymer-stabilized liquid crystal pi cells," Jpn. J. Appl. Phys. 46, 5230 (2007). [CrossRef]
  12. C. Y. Huang, R. X. Fung, Y. G. Lin, and C. T. Hsieh, "Fast switching of polymer-stabilized liquid crystal pi cells," Appl. Phys. Lett. 90, 171918 (2007). [CrossRef]
  13. S. G. Kim, S. M. Kim, Y. S. Kim, H. K. Lee, S. H. Lee, G. D. Lee, J. J. Lyu, and 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). [CrossRef]
  14. M. Gu, I. I. Smalyukh, and O. D. Lavrentovich, "Directed vertical alignment liquid crystal display with fast switching," Appl. Phys. Lett. 88, 061110 (2006). [CrossRef]
  15. Q4. D. S. Seo, J. H. Lee, and H. Y. Kim, "Wide viewing angle and fast response time using a novel vertical-alignment-pi cell mode on a homeotropic alignment layer," Liq. Cryst. 27, 1147 (2000). [CrossRef]
  16. J. E. Anderson, C. Cai, and S. C. A. Lien, "Vertically aligned pi-cell LCD having ON-state with mid-plane molecules perpendicular to the substrates," US Patent No. 6,067,142 (2000).
  17. E. Jakeman and E. P. Raynes, "Electro-optic response times in liquid crystals," Phys. Lett. A 39, 69 (1972). [CrossRef]
  18. A. Y. G. Fuh, M. S. Tsai, and C. Y. Huang, "Polymer network formed in liquid crystals: polymer-network-induced birefringence in liquid crystals," Jpn. J. Appl. Phys. 35, 3960 (1996). [CrossRef]

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