Studies of the polymer-stabilized cholesteric texture films doped with SmC

Cells of polymer-stabilized cholesteric texture (PSCT) were fabricated by a dding various ferroelectric liquid crystal (SmC*) dopant concentrations. Me asuring the electro-optical characteristics of these cells indicated that a dding a small amount of a SmC* could significantly improve the cells' elect ro-optical characteristics. Both the device's threshold voltage and the ris e time were decreased, while the hysteresis width was increased, Such an im provement was attributed to the increase of the dielectric anisotropy of th e liquid crystal and the modification of cells' polymer network with the ad dition of a small amount of SmC* in the mixture.