Array substrate, OLED panel and manufacturing method of OLED panel

The invention discloses an array substrate, an OLED panel and a manufacturing method of the OLED panel, the array substrate comprises a substrate, the substrate is provided with a plurality of data lines and gate lines which are perpendicular to each other, the data lines and the gate lines intersect to define a plurality of pixel areas, and the data lines and the gate lines are arranged on the substrate. A pixel, a driving thin film transistor and a switch thin film transistor are arranged in each pixel area, the driving thin film transistor and the switch thin film transistor are used for controlling the pixel, the switch thin film transistor is connected with the data line, the gate line and the driving thin film transistor, and the driving thin film transistor is further connected with the power line and the pixel. The sub-threshold swing of the driving thin film transistor is greater than the sub-threshold swing of the switching thin film transistor. Through the above structure, the problem of image qual