| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal aligning agent to which the ability to align liquid crystal molecules in parallel is added without causing substantial changes in the surface form and which has the performance to generate the effective pretilt angle by proper irradiation conditions of polarized pulse laser. SOLUTION: The liquid crystal aligning agent contains at least one kind of polymer selected from a group consisting of polyamic acid obtained by the reaction of tetracarboxylic acid dianhydrides expressed by formula (I) and diamine compounds and consisting of imidized polymers obtained by dehydrating and ring closing the above polyamic acid. In formula (I), R1 and R2 may be same or different and each represents a univalent organic group or halogen atom, each of a and b is an integer 0 to 4, and when a plurality of R1 and R2 are present, they may be same or different. |
