Flüssigkristallvorrichtung

摘要

A liquid crystal device is constituted by a pair of substrates each provided with a transparent electrode, and a liquid crystal disposed between the substrates; at least one of said pair of substrates having thereon an alignment film comprising (i) a polyimide including principally a recurring unit of the following structural formula (I): wherein R<5><5> denotes a tetravalent organic group, and R<5><6> and R<5><7> denote the same or different alkyl or perfluoroalkyl groups having 1 - 10 carbon atoms, and also at most 20 mol. % of a recurring monoamine unit of the following structural formula (II): wherein R<6><5> and R<6><6> denote the same or different alkyl or perfluoroalkyl groups having 1 - 10 carbon atoms, and X denotes an aromatic group, a heterocyclic group or a derivative group thereof; or (ii) a polyimide obtained through a reaction of at least two species of tetracarboxylic anhydrides of the following formula (III): wherein R<7><5> denotes a tetravalent organic group, and a diamine of the following formula (IV): wherein R<8><5> and R<8><6> denote the same or different alkyl or perfluoroalkyl groups having 1 - 10 carbon atoms.