Abstract
Thermal stability of UV-exposed PVCi films has been investigated to improve the LC alignment stability on the films by measuring the thermal stability of the photo-induced optical retardation and azimuthal anchoring energy. We show that the thermal stability of the retardation and the LC alignment on the films is improved by increasing UV exposure energy, which may result from the formation of polymer networks in a UV-exposed PVCi films. And we try to control the alignment of Ferroelectric liquid crystal(FLC)molecules on UV-exposed PVCi films, and show that a cross exposure method also works well to improve the contrast ratio of the sample as in cross rubbed FLC cells.
