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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 19 — Jul. 1, 2003
  • pp: 3853–3863

Retardation-film-compensated reflective bistable twisted nematic liquid-crystal displays

Jian-Xin Guo and Xiao-Wei Sun  »View Author Affiliations


Applied Optics, Vol. 42, Issue 19, pp. 3853-3863 (2003)
http://dx.doi.org/10.1364/AO.42.003853


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Abstract

The reflective bistable twisted nematic liquid-crystal displays (RBTN-LCDs) with a single front polarizer have been compensated by front half-wave or integer-wave plates or both. The compensation has been optimized through maximizing the contrast ratio. The optimized RBTN-LCDs with one or two retardation plates showed great improvement in contrast ratio. The wavelength-dependent reflectance, viewing-angle properties, and effects of the retardation variation of these optimized RBTNs with retardation compensation were also investigated. The simulation was carried out by using realistic parameters on RBTN modes that have retardation values from 0.30 to 0.85 μm and a low contrast ratio. The viewing-angle properties did not change much before and after the retardation compensation. The reflectance varied little, but the contrast ratio varied significantly with the variation of the retardations of the bistable twisted nematic cells, for both compensated and uncompensated cases. It is shown that a high contrast ratio (100:1), high reflectance (30%), and low dispersion are possible for such RBTN-LCDs with proper retardation compensations. Black-white operations can be realized by compensating RBTN-LCDs.

© 2003 Optical Society of America

OCIS Codes
(120.2040) Instrumentation, measurement, and metrology : Displays
(230.1150) Optical devices : All-optical devices
(230.2090) Optical devices : Electro-optical devices
(230.3720) Optical devices : Liquid-crystal devices
(260.5430) Physical optics : Polarization
(330.1690) Vision, color, and visual optics : Color

History
Original Manuscript: September 12, 2002
Revised Manuscript: March 12, 2003
Published: July 1, 2003

Citation
Jian-Xin Guo and Xiao-Wei Sun, "Retardation-film-compensated reflective bistable twisted nematic liquid-crystal displays," Appl. Opt. 42, 3853-3863 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-19-3853


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References

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