An array substrate and a display device are provided, and the array substrate, comprising: a substrate; and gate lines (2) and data lines (1), formed on the substrate and configured to defining pixel units, wherein, each data line (1) is located in a middle part of a corresponding pixel unit and configured to dividing each pixel unit into a first sub-pixel unit (7) and a second sub-pixel unit (8), wherein the first sub-pixel unit (7) is connected to one thin film transistor (6) and the second sub-pixel unit (8) is connected to one thin film transistor (6) for independent charging, and the thin film transistors (6) are located in a region corresponding to the corresponding gate line. The data line (1) is arranged in the middle of the corresponding pixel unit, and the first sub-pixel unit (7) and the second sub-pixel unit (8) are connected to two individual thin film transistors (6) to be independently charged, a width of the gate line can be greatly reduced, and the aperture ratio of the pixel can be improved.