Liquid crystal alignment agent composition, and liquid crystal alignment film, and liquid crystal display using the same

A liquid crystal alignment agent composition comprising:

• a polymer for liquid crystal alignment agent;
• and
• a crosslinker compound having a terminal crosslinking functional group capped with a silicon-containing thermally removable protecting group,
• wherein a change in the number of particles according to Equation 1 below is 30 or less.
• Change in Number of Particles (ΔEA)=EA1−EA0 [Equation 1]
• in the Equation 1,
• EA0 is the number of particles having a particle size of 0.5 μm or more contained in the liquid crystal alignment agent composition at the first point of time (0 second) at which the liquid crystal alignment agent composition is obtained, and
• EA1 is the number of particles having a particle size of 0.5 m or more contained in the liquid crystal alignment agent composition at the point of time after storing the liquid crystal alignment agent composition at −20° C. or more and 0° C. or less for 30 days from the first point of time (0 second).