| abstract |
The present invention provides an alignment film which is less likely to cause display defects when used in a liquid crystal display device, a liquid crystal display device having the alignment film, and a novel diamine used as a raw material of the alignment film. A diamine represented by the formula (2). And reacting the diamine with a tetracarboxylic dianhydride or dicarboxylic acid to prepare a polyamic acid, a polyimide, a polyamide, or a polyamideimide, and produce an alignment film from a varnish containing these. (X is a linear or branched alkylene having 1 to 6 carbons, n is an integer of 1 to 10, R 1 and R 2 are independently hydrogen or methyl, and Y is hydrogen, methyl, or a C m F 2m + 1, m is an integer of 1 to 10.) [Selection diagram] None |