| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid crystal alignment agent giving a liquid crystal alignment layer showing superior heat resistance and having superior charged voltage leak properties. Ž<P>SOLUTION: The liquid crystal alignment agent includes an imidized polymer formed by performing ring-closing dehydration of a polyamic acid obtained by reacting a tetracarboxylic acid dianhydride with a diamine including a compound having a structure represented by formula (A) (in the formula (A), [*] each denotes a bonding hand) and two amino groups and having ≥30% imidization rate. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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