providing a substrate including a first area and a second area, wherein a photodiode is formed in the first area of the substrate and the second area surrounds the first area;

forming an insulation pattern structure making contact with the photodiode in the first area of the substrate;

forming an anti-reflection layer on the insulation pattern structure and on the substrate;

forming a preliminary insulation interlayer structure having a plurality of insulation layers on the anti-reflection layer and on the substrate, the preliminary insulation interlayer structure including a first metal wiring structure in the first area and a second metal wiring structure in the second area, wherein a top surface of the second metal wiring structure in the second area is above that of the first metal wiring structure in the first area;

forming a recess portion in the first area of the substrate by partially etching the preliminary insulation interlayer structure, to form a first preliminary insulation interlayer structure on the first area of the substrate and form a second preliminary insulation interlayer structure on the second area of the substrate;

partially etching the first preliminary insulation interlayer structure and the anti-reflection layer corresponding to the photodiode, to form a first insulation interlayer structure having a second opening and form an anti-reflection pattern having a first opening connected to the second opening;

forming a transparent insulation pattern in the first and second openings;

forming a color filter on the transparent insulation pattern; and

forming a micro lens on the color filter.