The present invention relates to the field of display technology, and provides an array substrate, a method for manufacturing an array substrate, and a display device. The array substrate comprises a substrate, a data line, and a gate line and a pixel electrode formed sequentially on the substrate. The data line includes a fixed segment arranged on a same layer as, and spaced from, the gate line or the pixel electrode, and a connection segment electrically connected to the fixed segment. The present disclosure is possible to prevent the data line from being too close to the pixel electrode at the shift side, thereby to prevent a charging voltage for the pixel electrode from being affected by the capacitance effect and ensure the display quality of an image. In addition, no additional resistor is required, so it is able to reduce the power consumption.