| 摘要 |
<p>Provided is a liquid crystal alignment agent which can reduce the surface nano-roughness of a liquid crystal alignment film and ensures improved liquid crystal alignment properties, improved electrical characteristics, and enhanced reliability. This liquid crystal alignment agent contains both a polyamic acid ester which comprises repeating units represented by formula (1) and a polyamic acid which comprises repeating units represented by formula (2), and is characterized in that at least 60mol% of the divalent organic groups (Y1) of the polyamic acid ester and at least 60mol% of the divalent organic groups (Y2) of the polyamic acid have the same structure. In the formulae, X1 and X2 are each independently a tetravalent organic group; Y1 and Y2 are each independently a divalent organic group; A1 and A2 are each independently a hydrogen atom, or optionally substituted, alkyl, alkenyl or alkynyl, each having 1 to 10 carbon atoms; and R1 is methyl.</p> |
