The present invention provides: a liquid crystal display device capable of improving display qualities and yield, the liquid crystal display device having two or more domains in a pixel through an alignment treatment that has been provided for a substrate over several times; and a production method thereof.The present invention is a production method of a liquid crystal display device, the liquid crystal display device including: a pair of substrates facing each other; a liquid crystal layer arranged between the pair of substrates; an alignment film arranged on a liquid crystal layer-side surface of at least one of the pair of substrates; and a pixel including two or more regions different in alignment direction, the production method including an exposure step of exposing a part of the alignment film using a photomask having a mask center part and a mask joint part, the mask center part having a plurality of transmissive parts formed within a light-shielding region, the mask joint part having a region where a plurality of transmissive parts are formed within a light-shielding region in a distribution density lower than a distribution density of the plurality of transmissive parts in the mask center part.