A liquid crystal display device includes a polarizer plate attached to at least one of outer surfaces opposed to the inner surfaces of a counter substrate and an array substrate. A liquid crystal layer is interposed between the inner surfaces. Active areas are formed on the respective array substrate and the counter substrate to form a plurality of pixels in a matrix by a shield element. The shield element is formed to surround the active area on the counter substrate and extending to a corner portion of the counter substrate. A polarizer plate fiducial mark including a first mark formed on the counter substrate by the same material as the shield layer and a second mark formed of an aperture made in the shield layer is formed to check alignment error of the attached polarizer plate.