| 摘要 |
PURPOSE: A liquid crystal alignment agent, a liquid crystal display device including the liquid crystal alignment film and a liquid crystal alignment film manufactured by using the same are provided to maintain excellent vertical alignment force. CONSTITUTION: A liquid crystal alignment agent comprises polymer. The polymer is selected from a group consisting of polyamic acid including a structural unit represented by chemical formula 1, polyimide including a structure unit represented by chemical formula 2, and a combination thereof. In the chemical formula 1 and 2, X^1 and X^2 respectively indicate a tetravalent organic group derived from aromatic acid dianhydride and alicyclic acid dianhydride, and Y^1 and Y^2 respectively indicate divalent organic radical derived from diamine. The diamine comprises diamine represented by chemical formula 3 and 4.
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