Method of producing liquid crystal cell, and liquid crystal cell

A method of producing a liquid crystal cell, the method comprising:

• a thin-film forming step of forming, on a surface of at least one electrode-attached substrate of a pair of electrode-attached substrates including a TFT substrate and a slot substrate, the TFT substrate including a first dielectric substrate, a plurality of TFTs supported on the first dielectric substrate, and a plurality of patch electrodes electrically connected to the TFTs, the slot substrate including a second dielectric substrate and a slot electrode supported on the second dielectric substrate and having a plurality of slots, a thin film so as to cover the patch electrodes and/or the slot electrode;
• and
• a light irradiating step of irradiating the thin film with light including p-polarized light to provide the thin film with alignment-regulating capability of aligning liquid crystal molecules to thereby obtain an alignment film,
• wherein the thin film includes a polymer including a photoreactive functional group and exhibiting the alignment-regulating capability of the thin film in a direction orthogonal to a polarization axis of the p-polarized light.