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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 22, Iss. 5 — May. 1, 2005
  • pp: 966–977

Reflective liquid-crystal displays with asymmetric incident and exit angles

Zhibing Ge, Thomas X. Wu, Xinyu Zhu, and Shin-Tson Wu  »View Author Affiliations

JOSA A, Vol. 22, Issue 5, pp. 966-977 (2005)

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The 2 × 2 matrix methods are extended to calculate the optical behaviors of reflective liquid-crystal displays with asymmetric incident and exit angles. Both the unfolding method and the backward-eigenwave method are employed to derive the 2 × 2 matrix representations. The simulation results for symmetric incident and exit angles from these two methods are identical and agree well with those obtained from the 4 × 4 matrix method when the air–panel surface reflections are neglected. Further, the derived 2 × 2 matrix methods are applied to the asymmetric cases with different incident and exit angles. The simulated results on the normally black vertical alignment and normally white mixed-mode twisted nematic reflective displays show reasonably good agreement with the reported experimental data. In addition, a rubbing effect related to contrast values is observed and analyzed in asymmetric reflective cases. We also find that this effect has a significant influence on the contrast ratios once the difference between the incident and exit angles becomes large.

© 2005 Optical Society of America

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

Original Manuscript: August 20, 2004
Revised Manuscript: October 13, 2004
Manuscript Accepted: November 8, 2004
Published: May 1, 2005

Zhibing Ge, Xinyu Zhu, Shin-Tson Wu, and Thomas X. Wu, "Reflective liquid-crystal displays with asymmetric incident and exit angles," J. Opt. Soc. Am. A 22, 966-977 (2005)

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