The present invention relates to an array substrate and a display device. The array substrate comprises a first thin film transistor arranged on a non-display area of the array substrate and a second thin film transistor arranged on a display area of the array substrate, a part of a first active layer corresponding to a region between a first source and a first drain in the first thin film transistor forms a first trench, and a part of a second active layer corresponding to a region between a second source and a second drain in the second thin film transistor forms a second trench, the first trench has at least one first bent portion, the second trench has a second bent portion, and bending angles of the first bent portion and the second bent portion are the same or explementary angles.