Field-controlled light scattering from polymer-dispersed liquid crystal displays

Veaceslav L. Aristov; S. P. Kurchatkin; M. V. Mitrokhin; V. P. Sevostyanov

doi:10.1117/12.300040

1 February 1998 Field-controlled light scattering from polymer-dispersed liquid crystal displays

Veaceslav L. Aristov, S. P. Kurchatkin, M. V. Mitrokhin, V. P. Sevostyanov

Proceedings Volume 3318, Liquid Crystals: Physics, Technology, and Applications; (1998) https://doi.org/10.1117/12.300040
Event: Liquid Crystals, 1997, Zakopane, Poland

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.

Citation Download Citation

Veaceslav L. Aristov, S. P. Kurchatkin, M. V. Mitrokhin, and V. P. Sevostyanov "Field-controlled light scattering from polymer-dispersed liquid crystal displays", Proc. SPIE 3318, Liquid Crystals: Physics, Technology, and Applications, (1 February 1998); https://doi.org/10.1117/12.300040

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