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Proceedings Paper

Field-controlled light scattering from polymer-dispersed liquid crystal displays
Author(s): Veaceslav L. Aristov; S. P. Kurchatkin; M. V. Mitrokhin; V. P. Sevostyanov
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Paper Abstract

We have studied the field controlled light scattering in polyvinylbutyrale films containing microdroplets of dispersed smectic A liquid crystal. The polymer dispersed liquid crystals (PDLC) are processed by phase separation technique: solvent induced phase separation. The light scattering is determined by the gradual degradation of focal-conic domains in the high frequency electric field and LC remembers a given state after the field removal. The hysteresis phenomenon common to dispersed nematic LC mixtures can be overcome by use of the smectic A LC display with the field controlled light scattering. Polymer microdroplets increase the field threshold of LC clarity to 1,5-2 time, but field controlled light scattering effect permits the optical disagreement of the polymer and LC medium. The obtained result will be useful for fabrication of cheap grey-scale matrix passive-addressing PDLC displays.

Paper Details

Date Published: 1 February 1998
PDF: 3 pages
Proc. SPIE 3318, Liquid Crystals: Physics, Technology, and Applications, (1 February 1998); doi: 10.1117/12.300040
Show Author Affiliations
Veaceslav L. Aristov, R&D Institute Volga (Russia)
S. P. Kurchatkin, R&D Institute Volga (Russia)
M. V. Mitrokhin, Saratov State Univ. (Russia)
V. P. Sevostyanov, Saratov State Univ. (Russia)

Published in SPIE Proceedings Vol. 3318:
Liquid Crystals: Physics, Technology, and Applications
Jolanta Rutkowska; Stanislaw J. Klosowicz; Jerzy Zielinski; Jozef Zmija, Editor(s)

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