The present invention provides a liquid crystal display device that can exhibit a long-lasting favorable voltage holding ratio and prevent deterioration of reliability. The liquid crystal display device of the present invention includes: paired substrates disposed to face each other; a liquid crystal layer disposed between the substrates; and an alignment film disposed between at least one of the substrates and the liquid crystal layer, the at least one of the substrates including an electrode and/or a conductive line that contain(s) copper or aluminum, the liquid crystal layer containing a liquid crystal component and an additive component with a chemical structure including a benzotriazole group represented by a given chemical formula.