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Polymer-Dispersed Cholesteric Liquid-Crystal Device Containing Directly Stacked Right- and Left-Handed Layers

Right- and left-handed polymer-dispersed cholesteric (chiral nematic) liquid-crystal (PDCLC) layers are stacked directly between a pair of substrates. Each layer in a device containing these stacked layers exhibits independent characteristics. This is because the PDCLC structure confines the liquid crystal (LC) within small cavities (droplets) surrounded by polymer, preventing LC mixing between layers. This technique makes PDCLC devices polarization free and effectively increases the reflectivity of such devices.