LIQUID CRYSTAL ALIGNING AGENT FOR COATING OF BOA SUBSTRATE OR SUBSTRATES WITH BCS, AND LIQUID CRYSTAL DISPLAY ELEMENT

摘要

Provided are: a liquid crystal aligning agent for coating of a BOA substrate or a substrate with a BCS; and a liquid crystal display element that is provided with a BOA substrate or a substrate with a BCS, which is obtained using the liquid crystal aligning agent and has good display quality.A liquid crystal aligning agent for coating of a BOA substrate or a substrate with a BCS, which contains at least one polymer selected from the group consisting of polyimide precursors obtained by reacting a tetracarboxylic acid dianhydride component with a diamine component that contains a diamine containing a nitrogen atom or a carboxylic acid group in a structure other than two amino groups and polyimides obtained by imidizing the polyimide precursors; and a liquid crystal display element that comprises a BOA substrate or a substrate with a BCS, which is provided with a liquid crystal alignment film obtained from the liquid crystal aligning agent.