A display device includes a display panel, a bonding substrate and a bridge board. The display panel includes a pixel array disposed on a base substrate and an input pad electrically connected to the pixel array. The bonding substrate is disposed under the display panel and includes an output pad. The bridge board is bonded to the input pad of the display panel and the output pad of the bonding substrate to electrically connect the display panel to the bonding substrate, wherein the bridge board includes a rigid material.