Reflective liquid-crystal displays with asymmetric incident and exit angles

    Authors

    Z. B. Ge; T. X. Wu; X. Y. Zhu;S. T. Wu

    Comments

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    Abbreviated Journal Title

    J. Opt. Soc. Am. A-Opt. Image Sci. Vis.

    Keywords

    JONES MATRIX REPRESENTATION; 4 X 4; ANISOTROPIC MEDIA; OBLIQUE-INCIDENCE; THIN-FILM; OPTICS; PROPAGATION; Optics

    Abstract

    The 2 X 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 X 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 X 4 matrix method when the air-panel surface reflections are neglected. Further, the derived 2 X 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. (c) 2005 Optical Society of America.

    Journal Title

    Journal of the Optical Society of America a-Optics Image Science and Vision

    Volume

    22

    Issue/Number

    5

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    966

    Last Page

    977

    WOS Identifier

    WOS:000228742800019

    ISSN

    1084-7529

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