LIQUID CRYSTAL ALIGNING AGENT AND LIQUID CRYSTAL DISPALY DEVICE USING SAME

摘要

Disclosed is a soluble polyimide-based liquid crystal aligning agent which hardly causes damages on a film surface or separation of a film during rubbing. Specifically disclosed is a liquid crystal aligning agent which is applied over a substrate with electrode, then fired and subjected to rubbing for forming a liquid crystal alignment film. This liquid crystal aligning agent is characterized by containing a soluble polyimide obtained by imidating a polyamic acid which is obtained by reacting a diamine component with a tetracarboxylic acid dianhydride component. The liquid crystal aligning agent is further characterized in that the diamine component contains a diamine represented by the following general formula [1].