A display device includes a display panel having a display region and a pad region on a side of the display region, a first printed circuit board spaced apart from the pad region and includes a first driving controller configured to generate a plurality of signals, a second printed circuit board adjacent to the first printed circuit board, a first driving film connected to the first printed circuit board, a second driving film connected to the second printed circuit board, a first signal transmission film connected to the first printed circuit board and including first signal transmission wirings, and a second signal transmission film connected to the second printed circuit board and the first signal transmission film and including second signal transmission wirings.