Disclosed is a display device that may include a pixel electrode formed on source and drain electrodes, the pixel electrode electrically connected with the drain electrode, and a first protection electrode formed on a second metal pattern, the first protection electrode electrically connected with the second metal pattern and at least partially covering the second metal pattern; and a connection electrode formed on a passivation film, the connection electrode connected with a first metal pattern through a first contact hole, and connected with the first protection electrode through a second contact hole, wherein the first protection electrode is formed of the same material as that of the pixel electrode.