Reflective display based on biphotonic effect-induced phase transition in dye-doped cholesteric liquid crystals

Andy Y.-G. Fuh; San-Yi Huang; Yi-Shin Chen; Hung-Chang Jau; Ming-Shian Li; Jui-Hsiang Liu; Po-Chih Yang

doi:10.1117/12.837426

12 February 2010 Reflective display based on biphotonic effect-induced phase transition in dye-doped cholesteric liquid crystals

Andy Y.-G. Fuh, San-Yi Huang, Yi-Shin Chen, Hung-Chang Jau, Ming-Shian Li, Jui-Hsiang Liu, Po-Chih Yang

Author Affiliations +

Proceedings Volume 7618, Emerging Liquid Crystal Technologies V; 76180Z (2010) https://doi.org/10.1117/12.837426
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

This work studies the biphotonic effect in samples that are cholesteric liquid crystals (CLCs) doped with azo-C5. The experimental results show that the photo-isomerization of azo-C5 not only changes the clearing point of the sample, but also shifts the reflection band that is associated with the planar texture. Additionally, azo dye-doped CLCs (DDCLCs) have bi-stable or tri-stable states, as determined by the ambient temperature. Photo-switching between these bi-stable/tristable states is systematically studied. The result indicates that photo-addressing one of these states (planar, focal conic, and isotropic states) using a low- or high-intensity Ar⁺ laser beam is feasible. The results thus obtained are used to fabricate a photo-rewritable DDCLC display.

Citation Download Citation

Andy Y.-G. Fuh, San-Yi Huang, Yi-Shin Chen, Hung-Chang Jau, Ming-Shian Li, Jui-Hsiang Liu, and Po-Chih Yang "Reflective display based on biphotonic effect-induced phase transition in dye-doped cholesteric liquid crystals", Proc. SPIE 7618, Emerging Liquid Crystal Technologies V, 76180Z (12 February 2010); https://doi.org/10.1117/12.837426

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