Array substrate and display device

The embodiment of the invention provides an array substrate and a display device, which relate to the technical field of display and can be used for preventing the array substrate from unfavorableness to a certain extent due to a breaking phenomenon occurred in a data line. The array substrate comprises a first pixel unit and a second pixel unit, wherein the first pixel unit and the second pixel unit are arranged at the same side of a first data line; a first pixel electrode is arranged in the first pixel unit and connected with a drain of a first thin film transistor (TFT), a grid of the first TFT is connected with a first grid line, and a source of the first TFT is connected with a first branch; a second pixel electrode is arranged in the second pixel unit and connected with a drain of a second TFT, a grid of the second TFT is connected with a second grid line, and a source of the second TFT is connected with a second branch; and the first branch and the second branch both are connected with the first data line and are also conducted. The array substrate can be applied into the display device.