Disclosed is a liquid crystal display device not prone to burn-in. The disclosed liquid crystal display device is provided with a pair of substrates and a liquid crystal layer sandwiched between said pair of substrates. The liquid crystal layer contains a liquid crystal material having negative dielectric anisotropy, and at least one of the pair of substrates has both alignment film which homeotropically aligns adjacent liquid crystal molecules and a polymer layer which, formed on the alignment film, controls the alignment of the adjacent liquid crystal molecules. The polymer layer is formed by polymerization of at least one kind of monomer that generates radicals by optical absorption.