A liquid crystal display device includes a gate line and a data line on a substrate crossing each other to define a pixel region; a thin film transistor in the pixel region and connected to the gate line and the data line; a pixel electrode in the pixel region and connected to the thin film transistor; and a gate pad at an end of the gate line and a data pad at an end of the data line, at least one of the gate pad and the data pad including: a pad electrode including at least one pad contact hole therein along with a passivation layer, the passivation layer on the pad electrode, at least one side of the pad contact hole having an uneven shape in plane; and a pad electrode terminal contacting inner side surfaces of the pad electrode surrounding the pad contact hole.