An array substrate and a display device are disclosed. The array substrate includes a first block group, a second block group, a third block group and a fourth block group, a connection line between a center of the first color sub-pixel block of the first block group and a center of the first color sub-pixel block of the second block group has a first length in the first direction, a distance between center of the first color sub-pixel block of the first block group and center of the first color sub-pixel block of the third block group ranges from the first length to 3/2 of the first length, a distance between center of the first color sub-pixel block of the fourth block group and center of the first color sub-pixel block of the second block group ranges from ½ of the first length to the first length.