Array substrate and display device

The invention discloses an array substrate and a display device, a metal electrode structure and an optical structure layer are arranged on the array substrate, the optical structure layer and the metal electrode structure are located on the same side of the array substrate, an area, corresponding to the metal electrode structure, on the array substrate is a shading area, and a light-transmitting area on the array substrate is a light-transmitting area; the optical structure layer comprises a convex structure layer and a flat layer which are mutually stacked and have different refractive indexes, the flat layer covers the side, away from the array substrate, of the convex structure layer and makes contact with the surface of the convex structure layer, and a plurality of convex structures are arranged on the side, facing the flat layer, of the convex structure layer; the optical structure layer is used for refracting backlight rays of the shading area to the light-transmitting area at the protruding structure