1 February 1998 Field-controlled light scattering from polymer-dispersed liquid crystal displays
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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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Veaceslav L. Aristov, S. P. Kurchatkin, M. V. Mitrokhin, 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); doi: 10.1117/12.300040; https://doi.org/10.1117/12.300040
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