LIQUID-CRYSTAL ORIENTATION TREATMENT AGENT, LIQUID-CRYSTAL ORIENTATION FILM, AND LIQUID-CRYSTAL DISPLAY ELEMENT

摘要

Provided are: a liquid-crystal orientation treatment agent from which a liquid-crystal orientation film can be obtained which, even after being exposed to light and high temperatures for a long period of time, exhibits a stable pretilt angle, suppresses a decline in voltage retention rate, and quickly reduces an accumulated residual charge; a liquid-crystal orientation film; and a liquid-crystal display element. This liquid-crystal orientation treatment agent contains an (A) component and a (B) component. (A) component: a polyimide precursor obtained by reacting a tetracarboxylic acid component and a diamine component containing a diamine compound having a sidechain structure represented by formula (1); and a polymer containing one or more of the polyimides. (B) component: a polyimide precursor obtained by reacting a tetracarboxylic acid component and a diamine component not containing a diamine compound having a sidechain structure represented by formula (1); and a polymer containing one or more of the polyimides. (Y1, Y2 and Y3 represent a single bond, an alkylene, etc.; Y4 and Y5 represent a divalent cyclic group such as a benzene ring; n is an integer of 0-4; and Y6 represents a C1-18 alkyl group, etc.)