a substrate, having a first textured surface, wherein the first textured surface has a plurality of first pyramid structures, and a plurality of grid-line areas spaced from each other are formed on the first textured surface, wherein the plurality of grid-line areas include first grid-line areas and second grid-line areas, and each grid-line area of the plurality of grid-line areas has a second textured surface;

a plurality of sheet-shaped anti-reflection films, wherein one or more respective sheet-shaped anti-reflection films of the plurality of sheet-shaped anti-reflection films are formed on a portion of the second textured surface of each grid-line area of the first grid-line areas; and

a plurality of grid lines, including first grid lines, wherein each grid line of the first grid lines is formed on a respective first grid-line area and is in contact with the one or more respective sheet-shaped anti-reflection films formed on a portion of the second textured surface of the respective first grid-line area and with a remaining portion of the second textured surface of the respective first grid-line area not covered by any sheet-shaped anti-reflection films;

wherein each sheet-shaped anti-reflection film of at least some of the plurality of sheet-shaped anti-reflection films has a respective inner surface facing a respective portion of the second textured surface of a corresponding first grid-line area, the respective inner surface includes a bonding region that is connected and in direct physical contact with the respective portion of the second textured surface of the corresponding first grid-line area and a suspended region that does not contact the second textured surface of the corresponding first grid-line area, and a portion of a grid line of the plurality of grid lines is formed in a gap between the suspended region and the second textured surface.