A display device comprises a first substrate including a first contact hole, fan-out lines included in a first metal layer on the first substrate, first and second pad parts exposed to a lower portion of the first substrate, a display layer disposed on the fan-out lines, and a flexible film disposed below the first substrate, inserted into the first contact hole, and electrically connected to the first and second pad parts. The fan-out lines comprise first fan-out lines extending from the first contact hole in a first direction, and second fan-out lines extending from the first contact hole in a direction opposite to the first direction. The first fan-out lines and the first pad parts are integral with each other. The second fan-out lines and the second pad parts are integral with each other.