Temperature dependence of residual DC voltage and its evaluation parameter related to liquid‐crystal and alignment‐layer materials

— The temperature dependence of residual DC voltage was studied based on the adsorption and desorption of ions in the liquid-crystal (LC) layer to and from the interface between the LC and alignment layers during the application of an external DC offset voltage. The relaxation process of the adsorbed ions during the open-circuit state was also studied after applying the DC offset voltage. Those processes were found to follow the Arrhenius rule, and a new evaluation parameter related to the temperature is proposed for the design of the LC and alignment-layer materials.