DOI QR코드

DOI QR Code

Symmetric-viewing liquid crystal display with alternating alignment layers in an inverse-twisted-nematic configuration

  • Na, Jun-Hee (School of Electrical Engineering #032, Seoul National University) ;
  • Li, Hongmei (School of Electrical Engineering #032, Seoul National University) ;
  • Park, Seung-Chul (School of Electrical Engineering #032, Seoul National University) ;
  • Lee, Sin-Doo (School of Electrical Engineering #032, Seoul National University)
  • Received : 2011.07.07
  • Accepted : 2011.08.02
  • Published : 2011.12.31

Abstract

A symmetric-viewing inverse-twisted-nematic (ITN) liquid crystal display (LCD) with alternating alignment layers was developed using a stamping-assisted rubbing (SAR) technique. A patterned layer of a fluorinated acrylate polymer was transferred onto the first rubbed vertical-alignment layer prepared on a substrate by stamping. The fluorinated acrylate polymer provided a protective layer covering the first rubbed alignment layer during the second rubbing process, which promoted the vertical alignment of the LC molecules. The LC cell in the ITN geometry with two orthogonally rubbed alignment layers showed symmetric-viewing characteristics with fourfold symmetry. The SAR technique was shown to be a mask-free alignment method of producing multidomains for symmetric-viewing LCDs.

Keywords

References

  1. S.-W. Suh, S.T. Shin, and S.-D. Lee, Mol. Cryst. Liq. Cryst. 302, 163 (1997). https://doi.org/10.1080/10587259708041824
  2. S.-W. Suh, S.T. Shin, and S.-D. Lee, Appl. Phys. Lett. 68, 2819 (1996). https://doi.org/10.1063/1.116335
  3. W. Choi, M.-H. Kim, Y.-J. Na, K. Koo, and S.-D. Lee, IMID'09 Dig. 755 (2009).
  4. K. Koo, J.-H. Na, Y.-T. Kim, H. Li, and S.-D. Lee, J. Inf. Display 10, 180 (2009). https://doi.org/10.1080/15980316.2009.9652104
  5. M. Schadt, H. Seiberle, and A. Schuster, Nature 381, 212 (1996). https://doi.org/10.1038/381212a0
  6. J. Cognard, Alignment of Nematic Liquid Crystals and Their Mixtures (Gordon and Breach, London, 1982).
  7. M.E. Becker, R.A. Kilian, B. Kosmowski, and D.A. Mlynski, Mol. Cryst. Liq. Cryst. 132, 167 (1986). https://doi.org/10.1080/00268948608079537

Cited by

  1. Four-domain twisted nematic structure with enhanced liquid crystal alignment stability and fast response time vol.112, pp.1, 2012, https://doi.org/10.1063/1.4733998
  2. Generation of intensity-tunable structural color from helical photonic crystals for full color reflective-type display vol.26, pp.10, 2011, https://doi.org/10.1364/oe.26.013561
  3. Self-organized wrinkling of liquid crystalline polymer with plasma treatment vol.33, pp.23, 2011, https://doi.org/10.1557/jmr.2018.360