An array substrate, a manufacturing method thereof, and an electronic device are provided. The array substrate includes: a base substrate having a first side, a second side opposite to the first side and a via hole passing through a plate body of the base substrate; a switch element at the first side of the base substrate; and a pixel electrode which is at the second side of the base substrate and which is electrically connected with the switch element through the via hole. The array substrate can reduce or eliminate light leakage during dark state display.