OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 11 — May. 21, 2012
  • pp: 11659–11664

Ultrafast switching of randomly-aligned nematic liquid crystals

Dong Han Song, Jung-Wook Kim, Ki-Han Kim, Soon Joon Rho, Hyeokjin Lee, Heeseop Kim, and Tae-Hoon Yoon  »View Author Affiliations

Optics Express, Vol. 20, Issue 11, pp. 11659-11664 (2012)

View Full Text Article

Enhanced HTML    Acrobat PDF (941 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We propose an ultrafast nematic liquid crystal (LC) device without alignment layers, where both the dark and bright states can be realized by applying an electric field. A vertical electric field is applied to vertically align the LCs for the dark state, whereas an in-plane electric field is applied to homogeneously align the LCs for the bright state. We achieved a total response time of less than 3 ms in the proposed device. This device may contribute, not only to a significant improvement of the switching speed in liquid crystal devices, but also to the simplification of the device fabrication by the omission of the alignment layer coating and the rubbing process.

© 2012 OSA

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Optical Devices

Original Manuscript: March 27, 2012
Revised Manuscript: April 29, 2012
Manuscript Accepted: May 1, 2012
Published: May 7, 2012

Dong Han Song, Jung-Wook Kim, Ki-Han Kim, Soon Joon Rho, Hyeokjin Lee, Heeseop Kim, and Tae-Hoon Yoon, "Ultrafast switching of randomly-aligned nematic liquid crystals," Opt. Express 20, 11659-11664 (2012)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. K. Fujimori, Y. Narutaki, Y. Itoh, N. Kimura, S. Mizushima, Y. Ishii, and M. Hijikigawa, “New color filter structures for transflective TFT - LCD,” SID Int. Symp. Dig. Tech. Pap. 33, 1382–1385 (2002).
  2. S. H. Lee, K.-H. Park, J. S. Gwag, T.-H. Yoon, and J. C. Kim, “A multimode-type transflective liquid crystal display using the hybrid-aligned nematic and parallel-rubbed vertically aligned modes,” Jpn. J. Appl. Phys.42(Part 1, No. 8), 5127–5132 (2003). [CrossRef]
  3. Q. Wang and S. Kumar, “Submillisecond switching of nematic liquid crystal in cells fabricated by anisotropic phase-separation of liquid crystal and polymer mixture,” Appl. Phys. Lett.86(7), 071119 (2005). [CrossRef]
  4. S. Nagata, E. Takeda, Y. Nanno, T. Kawaguchi, Y. Mino, A. Otsuka, and S. Ishihara, “Capacitively coupled driving of TFT-LCD,” SID Int. Symp. Dig. Tech. Pap. 20, 242–245 (1989).
  5. P. Bos, “Fast-switching liquid-crystal effects for displays,” Inf. Disp.23(9), 20–25 (2007).
  6. I. C. Khoo and S. T. Wu, Optics and Nonlinear Optics of Liquid Crystals (World Scientific, Singapore, 1993).
  7. P. J. Bos and K. R. Koehler-Beran, “The π-cell, a fast liquid-crystal optical switching device,” Mol. Cryst. Liq. Cryst. (Phila. Pa.)113, 329–339 (1984). [CrossRef]
  8. D. K. Yang, L. C. Chien, and J. W. Doane, “Cholesteric liquid crystal/polymer dispersion for haze‐free light shutters,” Appl. Phys. Lett.60(25), 3102–3104 (1992). [CrossRef]
  9. J. W. Doane, N. A. Vaz, B. G. Wu, and S. Zumer, “Field controlled light scattering from nematic microdroplets,” Appl. Phys. Lett.48(4), 269–271 (1986). [CrossRef]
  10. H. Kikuchi, M. Yokota, Y. Hisakado, H. Yang, and T. Kajiyama, “Polymer-stabilized liquid crystal blue phases,” Nat. Mater.1(1), 64–68 (2002). [CrossRef] [PubMed]
  11. J. G. Fonseca and Y. Galerne, “Simple method for measuring the azimuthal anchoring strength of nematic liquid crystals,” Appl. Phys. Lett.79(18), 2910–2912 (2001). [CrossRef]
  12. J.-I. Baek, K.-H. Kim, J. C. Kim, T.-H. Yoon, H. S. Woo, S. T. Shin, and J. H. Souk, “Fast in-plane switching of a liquid crystal cell triggered by a vertical electric field,” Jpn. J. Appl. Phys.48(10), 104505 (2009). [CrossRef]
  13. S. Nakajima, Y. Sugiyama, H. Ichinose, H. Numata, S. Naemura, and A. Manabe, “Novel liquid-crystal materials with high birefringence and low rotational-viscosity for the field-sequential color TN-LCDs,” SID Int. Symp. Dig. Tech. Pap. 31, 242–245 (2000).
  14. N. Koma, T. Miyashita, T. Uchida, and K. Yoneda, “Using an OCB-mode TFT-LCD for high-speed transition from splay to bend alignment,” SID Int. Symp. Dig. Tech. Pap. 30, 28–31 (1999).
  15. T. Takahashi, H. Furue, M. Shikada, N. Matsuda, T. Miyama, and S. Kobayashi, “Preliminary study of field sequential full color liquid crystal display using polymer stabilized ferroelectric liquid crystal display,” Jpn. J. Appl. Phys.38(Part 2, No. 5A), L534–L536 (1999). [CrossRef]
  16. S. R. Lee, C. G. Jhun, T.-H. Yoon, J. C. Kim, J. D. Noh, D. H. Suh, and J. Y. Lee, “Double-pulse scan of field sequential color driving of optically compensated bend cell,” Jpn. J. Appl. Phys.45(4A), 2683–2688 (2006). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited