The present disclosure provides an array substrate and a display device. The array substrate includes a plurality of data lines, a plurality of gate lines and a plurality of sub-pixel units defined by the plurality of data lines and the plurality of gate lines crossed with the plurality of data lines. Each gate line is connected with a row of sub-pixel units in an extension direction of the gate line. Each data line is connected with sub-pixel units which are arranged alternately at different sides of the each data line. Sub-pixel units connected with a same data line have an identical color