A flexible display device is provided that includes a display panel having an active area including a plurality of pixels displaying an image and a non-active area surrounding the active area, first data pads disposed in the non-active area adjacent to the active area of the display panel and electrically connected with the plurality of pixels, pads disposed in a direction away from the first data pads and the active area, second data pads disposed between the first data pads and the pads, and a protrusion pattern located between the second data pads and the third data pads and disposed on an upper part of the insulating layer.