| abstract |
(57) [Abstract] [Purpose] To provide a liquid crystal alignment treatment agent having excellent film characteristics such as voltage holding ratio, tilted orientation angle, and charge storage characteristics, or adhesion to a substrate and printability. . [Structure] In a liquid crystal alignment treatment agent used for forming a liquid crystal alignment film obtained by coating and baking on a substrate with a transparent electrode and rubbing the film surface, the liquid crystal alignment treatment agent is represented by the general formula [I]. A polyimide precursor containing a repeating unit represented by, and a solvent-soluble polyimide resin containing a repeating unit represented by the general formula [II], and, At least 1 mol% of R 4 of the polyimide represented by the general formula [II] is a divalent organic group constituting a diamine having a long chain alkyl group having 6 or more carbon atoms or a fluorine-containing alkyl group, A liquid crystal alignment treatment agent, wherein the polyimide represented by the general formula [II] is 1 to 80% by weight based on the total weight of the polymer. Embedded image (In the formula, R 1 and R 3 are tetravalent organic groups constituting tetracarboxylic acid and its derivative, R 2 and R 4 are divalent organic groups constituting diamine, and m and k are positive. It is an integer.) |