Array substrate, manufacturing method thereof and display device

The invention provides an array substrate, a manufacturing method thereof and a display device. The array substrate comprises a substrate body, and the substrate body comprises a plurality of sub-pixel areas arranged in an array; the data lines are located at the column gaps of the sub-pixel areas, and at least part of the data lines comprise widening parts used for supporting the spacers; the multiple grid lines and the multiple common electrode lines are located at the line gaps of the sub-pixel areas, the multiple grid lines, the multiple common electrode lines and the multiple data lines are arranged on different layers, and at least one of at least part of the grid lines and at least part of the common electrode lines comprises an avoiding part wound around the widening part.