An array substrate includes a substrate, a gate line on the substrate, a sub-pixel, two data lines, a touch signal line, a functional electrode, and a touch electrode unit. The orthographic projection of the touch signal line on the substrate partially overlaps orthographic projection of an opening area of the sub-pixel on the substrate; the touch electrode unit is coupled to the touch signal line; the extension directions of the first and second sub-function electrode portions of the functional electrode are the same as that of the data line, the first/second sub-functional electrode portion is located on a first/second side of the sub-pixel opening area; along the extending direction of the gate line, a distance between the first/second sub-functional electrode portion and the touch signal line is smaller than a distance between the data line on the first/second side and the touch signal line.