An embodiment of the invention provides a
display device and a
repair method thereof and an array substrate and relates to the display technical field and the production of the array substrate and the
display device comprising the same. The array substrate comprises an underlayer substrate, grid lines,
data lines, pixel electrodes and a plurality of conductive electrodes; the grid lines, the
data lines, the pixel electrodes and the plurality of conductive electrodes are arranged on the underlayer substrate; any one of the conductive electrodes is located between the two adjacent grid lines; every conductive
electrode comprises a horizontal
electrode wire and a plurality of vertical
electrode wires; the vertical electrode wires are electrically connected with the horizontal electrode wire and arranged separately; the positions of the vertical electrode wires are corresponding to the positions of the
data lines; the data lines comprise the vertical portions and protruding portions in the two adjacent grid lines, wherein the vertical portions are perpendicular to the vertical electrode wires and the protruding portions are connected with the vertical portions and arranged close to the grid lines; the pixel electrodes and the protruding portions and the horizontal electrode wire portions which are close to the bilateral sides of the vertical electrode wires are not overlapped. According to the
display device and the
repair method thereof and the array substrate, the data line
signal loss caused by too long repair lines can be reduced, the data lines cannot be limited by the number of the repair lines, and accordingly the repair efficiency is improved.