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Proceedings Paper

Novel materials for polymer-stabilized blue phase
Author(s): Michael Wittek; Norihiko Tanaka; Matthias Bremer; David Wilkes; Detlef Pauluth; Kazuaki Tarumi
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Paper 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.

Paper Details

Date Published: 10 February 2012
PDF: 6 pages
Proc. SPIE 8279, Emerging Liquid Crystal Technologies VII, 82790W (10 February 2012); doi: 10.1117/12.908138
Show Author Affiliations
Michael Wittek, Merck KGaA (Germany)
Norihiko Tanaka, Merck KGaA (Germany)
Matthias Bremer, Merck KGaA (Germany)
David Wilkes, Merck KGaA (Germany)
Detlef Pauluth, Merck KGaA (Germany)
Kazuaki Tarumi, Merck KGaA (Germany)

Published in SPIE Proceedings Vol. 8279:
Emerging Liquid Crystal Technologies VII
Liang-Chy Chien, Editor(s)

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