Method for producing a lateral electric field driving the liquid crystal display device

After applying the formed alignment treatment liquid crystal alignment film by applying the liquid crystal aligning agent to the substrate, a pair of substrates forming the liquid crystal alignment film, the liquid crystal alignment layer through the liquid crystal is placed opposite to the relative manufacturing a liquid crystal display device of the horizontal electric field drive system after creating the liquid crystal cell, and light irradiation to the liquid crystal cell, characterized in that through the step of reacting a photopolymerizable group in the liquid crystal during and / or liquid crystal alignment film Te Method.