A display device that is resistant to erosion caused by moisture infiltration is provided. In the display device, a driver circuit unit includes a driver chip and a film pad on which the driver chip is mounted. A display panel of the display device includes a panel pad bonded to the film pad. The panel pad includes first conductive lines electrically connected to signal lines disposed in an active area of the display panel, second conductive lines in contact with the first conductive lines, third conductive lines in contact with the second conductive lines, and a conductive film connecting the third conductive lines to the film pad. A contact area between the first conductive lines and the second conductive lines overlaps at least a portion of an area of the conductive film.