Abstract
The adsorption of ions in liquid crystals (LCs) to the surfaces of polyimde films having benzene moieties was investigated by evaluating the decay curves of the charged voltage as a function of time in the open-circuit setting. The degree of the decay of the charged voltage of an LC cell decreased with increasing time of voltage application before the open-circuit period. The experimental result and the analysis with the model for decay of the charged voltage due to ions in the LC layer of the LC cell indicate that most of the adsorbed ions did not desorb from the surface of the polyimide films with increasing time of voltage application, and thus the adsorbed ions did not affect the decay of the charged voltage.
