The invention provides an array substrate and a display device. The array substrate comprises a plurality of gate lines and a plurality of data lines which are arranged crosswise and are insulated from each other, and a plurality of pixel units, wherein each pixel unit comprises a control section and a display section, each of which is symmetrically distributed with the central line of a corresponding gate line as a symmetry axis, the control section is located at a cross-point of the gate line and the data line, and is at least partially overlapped with the gate line and the data line, the display section is located at a region defined by the gate line and the data line; and the control section is connected to the display section to control the display section for display. In the present invention, the aperture ratio of the array substrate is increased.