Preparation of stripe-shaped domain structure in ferroelectric liquid crystal and the fabrication of spatial light modulator

The stripe-shaped domain (SSD) structure was prepared in the initial ferroe lectric liquid crystal (FLC) alignment without the application of an extern al electric field, which was realized by the aligning layer modification th rough the doping of tin tetra-2,4-dimethyl phenoxy phthalocyanine (SnPc) in to the rubbed polyimide films. Atomic force microscopy was used to investig ate the alignment films and the corresponding aligning ability was evaluate d through the, pre-tilt angle measurement. The memory capability and the co ntrast ratio of thus aligned SSFLC cells have been enhanced and improved wi th the appearance of the SSD structure. The electrically controlled 64 x 64 FLC spatial light modulator was fabricated using the improved aligning met hod, which proves valuable for the practical device fabrication.