PROBLEM TO BE SOLVED: To provide a liquid crystal alignment agent that has excellent pre-tilt angle light stability, a liquid crystal alignment film formed by the liquid crystal alignment agent, and a liquid crystal display including the liquid crystal alignment film.SOLUTION: A liquid crystal alignment agent comprises: a polymer (A); photosensitive polysiloxane (B), and a solvent (C). The polymer (A) is a reactant of a tetracarboxylic acid dianhydride component (a1) and a diamine component (a2). The diamine component (a2) includes a diamine compound (a2-1) represented by the formula (1). The photosensitive polysiloxane (B) is a reactant of a silane compound (b1-1) including an epoxy group and a cinnamic acid derivative (b2).SELECTED DRAWING: None
LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY