A display device includes a display panel and at least one driving chip. The display panel has a display region and a non-display region and includes a pixel array, a plurality of pads, a passivation layer, and a plurality of conductive patterns. The pixel array is located in the display region. The pads are located in the non-display region and electrically connected to the pixel array. The passivation layer is located on the pads and has a plurality of through holes. Each of the conductive patterns covers one of the pads and is electrically connected to the pad through at least one of the through holes. A material of the conductive patterns includes a polymer conductive material. The driving chip is located on the display panel and electrically connected to the pads of the display panel.