A display device which narrows a width of a frame thereof is provided. A display device includes a first substrate on which a plurality of switching elements is formed, a second substrate which is arranged to face the first substrate in an opposed manner, and a frame which is mounted on an outer peripheral portion of the first substrate by way of an adhesive layer. The adhesive layer and the frame each have an opening at a position corresponding to the plurality of switching elements formed on the first substrate, and an inner peripheral surface of the opening of the frame and an inner peripheral surface of the opening of the adhesive layer are made coplanar with each other.