Abstract
A series of polymer alignment layers consisting of fluoro and non-fluoro polyimide, polyamide-imide and polyamide were developed for antiferroelectric liquid crystal display devices. These polymer alignment layers were evaluated for their electrooptical properties. The alignment characteristics such as double hysteresis behavior and driving margin strongly depend upon the polymer alignment structure. Alignment layers with less hindered or linear diamine unit in the polymer backbone showed superiority, in comparison with sterically hindered diamine, in aligning and electrooptical properties of antiferroelectric liquid crystal devices.
