A display device comprises a display panel including a main display region and a periphery region outside the main display region; and a panel driver connected with the display panel in the periphery region of the display panel, wherein the display panel includes an upper substrate and a lower substrate formed under a lower surface of the upper substrate, and the lower substrate is formed to expose a pad region provided on the lower surface of the upper substrate, and the panel driver is connected to the pad region provided on the lower surface of the upper substrate.