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Volume: 17 | Article ID: art00047
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Color Management for Flexible Cholesteric-LCD under LED Illumination
Wei-Chung Cheng
Huang-Ming P. Chen
Jih-Fon Huang
  DOI :  10.2352/CIC.2009.17.1.art00047  Published Online :  January 2009
Abstract

The reflective cholesteric liquid crystal display suffers from voltage-induced color shift and viewing angle-dependent color shift. In this paper, three solutions are presented to overcome these problems. First, four types of cholesteric liquid crystals were synthesized and characterized to find the best mixture with the lowest voltage-induced color shift and reflectance reduction. Secondly, 5-primary (red, yellow, green, cyan and blue) cholesteric liquid crystals were synthesized such that the color gamut and reflectance were enhanced. Finally, the viewing angle-dependent color shift was characterized and then compensated by adjusting the chromaticity of the red/green/blue LED light sources.

Journal Title : Color and Imaging Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/CIC.2009.17.1.art00047
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Wei-Chung Cheng, Huang-Ming P. Chen, Jih-Fon Huang, "Color Management for Flexible Cholesteric-LCD under LED Illumination"  in Proc. IS&T 17th Color and Imaging Conf.,  2009,  pp 254 - 259,  https://doi.org/10.2352/CIC.2009.17.1.art00047

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Copyright © Society for Imaging Science and Technology 2009
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Color and Imaging Conference
color imaging conf
2166-9635
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2166-9635(20090101)2009:1L.254;1-
cic_v2009n1/splitsection47.xml
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Articles
Color Management for Flexible Cholesteric-LCD under LED Illumination
ChengWei-Chung
ChenHuang-Ming P.
HuangJih-Fon
01012009
2009
1
254
259
2009
The reflective cholesteric liquid crystal display suffers from voltage-induced color shift and viewing angle-dependent color shift. In this paper, three solutions are presented to overcome these problems. First, four types of cholesteric liquid crystals were synthesized and characterized to find the best mixture with the lowest voltage-induced color shift and reflectance reduction. Secondly, 5-primary (red, yellow, green, cyan and blue) cholesteric liquid crystals were synthesized such that the color gamut and reflectance were enhanced. Finally, the viewing angle-dependent color shift was characterized and then compensated by adjusting the chromaticity of the red/green/blue LED light sources.