Patent ID: 7498068

Claim:
A liquid crystal display device employing a liquid crystal alignment film obtained by employing a liquid crystal alignment agent comprising at least one member selected from the group consisting of a polyamic acid obtained by polymerization of a diamine component with a tetracarboxylic dianhydride component, and a polyimide obtained by cyclodehydration of the polyamic acid, wherein the diamine component contains at least one of diamines represented by the following formula [1]: H 2 N-A-R—NH 2 [1] wherein A is a bivalent organic group comprising a benzene ring or an aromatic condensed ring, provided that one or more optional hydrogen atoms in the benzene ring or the aromatic condensed ring may be substituted by a monovalent organic group other than an amino group, and R is a C 1-10 bivalent saturated hydrocarbon group.