Liquid crystal display device and method for manufacturing same

A liquid crystal display device comprising:

• paired substrates;
• a liquid crystal layer held between the substrates;
• and
• a photo-alignment film disposed on a surface facing the liquid crystal layer of at least one of the substrates,
• the liquid crystal layer containing a liquid crystal material that has a nematic-isotropic phase transition temperature of 75° C. or lower and a nematic phase temperature range narrower than 100° C.,
• the photo-alignment film containing a first polymer and a first compound each containing a hydrophobic group,
• wherein the first polymer includes a polyamic acid represented by the following formula (20):
• and the first compound is represented by the following formula (22):

A liquid crystal display device comprising:

• paired substrates;
• a liquid crystal layer held between the substrates;
• and
• a photo-alignment film disposed on a surface facing the liquid crystal layer of at least one of the substrates,
• the liquid crystal layer containing a liquid crystal material that has a nematic-isotropic phase transition temperature of 75° C. or lower and a nematic phase temperature range narrower than 100° C.,
• the photo-alignment film containing a copolymer of a first monomer unit containing a photo-functional group and a second monomer unit containing a hydrophobic group, wherein the copolymer is represented by the following formula (19):