The invention discloses an array substrate, a display panel and a display device. The array substrate comprises multiple grating lines, multiple data lines and multiple sub pixels which are arranged on an underlayer substrate; first electrodes and second electrodes which are mutually insulated are arranged in the sub pixels, the first electrodes comprise multiple first electrode strips, and the second electrodes comprise multiple second electrode strips; in projection of the first electrode strips and the second electrode strips on the underlayer substrate, the distance between the projection of one of the second electrode strips and the projection of the first electrode strip adjacent to the second electrode strip in the first direction is S1 in the direction of being parallel to the first direction; the distance between the projection of the second electrode strip and the projection of the first electrode strip adjacent to the second electrode strip in the direction of being opposite to the first direction is S2 in the direction of being parallel to the first direction; the sub pixels comprise first domains and second domains, the first domains comprise the part that S1 is larger than S2, and the second domains comprise the part that S1 is smaller than S2. According to the array substrate, the tolerability on process biases such as the critical dimension bias and the overlay margin is improved.