The invention relates to the technical field of display, and discloses an array substrate, a preparing method thereof, a display panel and a
display device. The array substrate comprises a substrate body, a plurality of grid wires and a plurality of touch control
electrode wires, wherein a plurality of pixels are arranged in a pixel area of the substrate body in arrays, the grid wires extend on the substrate body in the first direction of the pixel arrays, the touch control
electrode wires extend on the substrate body in the first direction of the pixel arrays and are insulated from the grid wires, and the positive projection of the touch control
electrode wires on the substrate body and the positive projection of the grid wires on the substrate body are at least partly overlapped. Compared with similar array substrates in the prior art, the array substrate has the advantages that the display area occupied by signals wires is small, the opening rate of the pixels is large, the short-circuit situation between the touch control electrode wires and the data wires cannot easily happen, the opening rate of the array substrate is high, and the x-line failures can be avoided.