VERFAHREN ZUR HERSTELLUNG VON NEMATISCHEN FLÜSSIGKRISTALLVORRICHTUNGEN

摘要

A method of producing nematic liquid crystal devices in which a weak zenithal anchorage energy of the liquid crystal is obtained on at least one of its confining plates by depositing onto a substrate a polymer, copolymer or terpolymer deriving from poly(vinyl chloride-co-vinylalkylether) or poly(vinyl chloride-co-vinyl aryl ether), stabilizing the deposit and defining a azimuthal orientation of the deposit which induces a controlled azimuthal anchorage of the liquid crystal. An Independent claim is included for a bistable nematic liquid crystal device using at least one weak zenithal energy anchorage layer obtained by the claimed method, the layer being deposited on a transparent or reflecting electrode.