Membranen zur Kontrolle der Ausrichtung von Flüssigkristallen und sie verwendende flüssigkristalline Elemente.

摘要

A liquid crystal orientation controlling membrane, characterized by the polyimide membrane comprising the repeating unit represented by the formula: wherein Ar<5> represents a diamine moiety which is selected from the group consisting of and and Ar<6> represents tetravalent carborylic acid moiety which is selected from the group consisting of Another invention is a ferroelectric liquid crystal element or an antiferroelectric liquid crystal element using the polyimide orientation controlling membrane mentioned above. The present liquid crystal element is used to a large picture display with high resolution, a TV picture display with wide viewing angle and a liquid crystal optical shutter.