Method of producing photo-alignment layer of liquid crystal display

A method of manufacturing a liquid crystal display, comprising:

• forming a thin film transistor on a first substrate;
• forming a passivation layer on the thin film transistor;
• forming a first electrode and a second electrode positioned via an insulating layer interposed therebetween, on the passivation layer;
• and
• forming a first photo-alignment layer on the first electrode or the second electrode,
• wherein the forming the first photo-alignment layer comprises:
• disposing a polymer material on the first electrode or the second electrode,
• pre-baking the polymer material disposed on the first electrode or the second electrode,
• irradiating a light to the pre-baked polymer material, to photo-align the pre-baked polymer material, and
• thermal-treating the irradiated pre-baked polymer material, to harden the irradiated pre-baked polymer material,
• wherein the thermal-treating comprises a first thermal-treatment, and a second thermal-treatment at a higher temperature than that of the first thermal-treatment.