Novel materials for polymer-stabilized blue phase

Michael Wittek; Norihiko Tanaka; Matthias Bremer; David Wilkes; Detlef Pauluth; Kazuaki Tarumi

doi:10.1117/12.908138

10 February 2012 Novel materials for polymer-stabilized blue phase

Michael Wittek, Norihiko Tanaka, Matthias Bremer, David Wilkes, Detlef Pauluth, Kazuaki Tarumi

Proceedings Volume 8279, Emerging Liquid Crystal Technologies VII; 82790W (2012) https://doi.org/10.1117/12.908138
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Blue phase shows one the fastest switching via induced birefringence by an external electrical field observed in liquid crystals. However, the pure blue phase typically has a narrow temperature range. Applying polymer-stabilization using reactive mesogens, a blue phase with a largely increased temperature range of up to 60 K can be obtained. Prerequisite for a good stabilization is the adequate matching of RMs and the optimized polymerization conditions. To achieve a low operating voltage of the polymer stabilised Blue phase display device, the material properties of the host - namely the product of the optical birefringence Δn and the electrical anisotropy Δε - has to be optimised. New host developments yielding a largely increased Δn * Δε ~ 40 at room temperature are presented.

Citation Download Citation

Michael Wittek, Norihiko Tanaka, Matthias Bremer, David Wilkes, Detlef Pauluth, and Kazuaki Tarumi "Novel materials for polymer-stabilized blue phase", Proc. SPIE 8279, Emerging Liquid Crystal Technologies VII, 82790W (10 February 2012); https://doi.org/10.1117/12.908138

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