Substrate provided with alignment film and liquid crystal display device

A substrate provided with an alignment film, comprising:

• a substrate including an electrode on a surface thereof;
• and
• an alignment film in contact with the electrode, for aligning liquid crystal molecules,
• the alignment film containing a first polymer that contains a polysiloxane structure in a side chain and a second polymer that contains a photo-reactive group or a vertically aligning functional group,
• the alignment film including a first surface that is placed on a side close to the electrode and contains the first polymer and a second surface that is placed on a side opposite to the first surface and contains the second polymer,
• the first polymer having a weight that is equal to or greater than a weight of the second polymer in the alignment film,
• wherein the first polymer contains a structure represented by the following formula (2) or a structure represented by the following formula (3):
• wherein
• X is a structure represented by any one of the following formulae (X-1) to (X-12);
• Y1 is a structure represented by any of the following formulae (Y1-1) to (Y1-16);
• Y2 is a structure represented by the following formula (Y2-1);
• W is a side chain;
• m1 and m2 are each a real number greater than 0 and smaller than 1;
• and
• p1 and p2 each represent the number of repeats, and are each an integer of 1 or greater,