Array substrate, manufacturing method thereof, display panel and display device

The invention discloses an array substrate, a manufacturing method thereof, a display panel and a display device. According to the invention, first conductive lines and second conductive lines, whichare electrically connected with a common electrode, are arranged in a display area on the basis of realizing a narrow frame, so that the resistance of the common electrode can be reduced, thus the signal delay caused by the load can be reduced, the signal transmission of the common electrode is accelerated, and the display effect is improved. In addition, the extension direction of the first conductive lines is the same as that of data lines, the extension direction of the second conductive lines is the same as that of grid lines, so that the first conductive lines and the second conductive lines are arranged in the display area in a crossed manner, the uniform distribution of the first conductive lines and second conductive lines electrically connected with the common electrode can be realized, the first conducti