Display device and method for manufacturing the same

A display device and a method for manufacturing a display device are provided. An embodiment of a display device includes a display panel including a pad area including a plurality of pads, a first circuit board disposed to partially overlap the pad area; wherein the first circuit board includes: a first base board; a conductive layer disposed on the first base board and including a plurality of first bumps disposed on one end portion of the first base board, a plurality of second bumps disposed on the opposite end portion of the first base board, and a lead wiring connecting the first bump to the second bump, a passivation layer disposed on the first base board to cover the lead wiring; an adhesive layer disposed on the passivation layer to at least partially cover a top and side surface of one end portion of the display panel.