Patent ID: 7973271

Claim:
A solid-state image pickup device having a plurality of pixels integrated on a light-receiving surface, comprising: photodiodes disposed in pixel regions serving as the light-receiving surface of a semiconductor substrate and partitioned on a pixel basis; signal transferring portions disposed on the semiconductor substrate and which read signal charges generated and stored in the photodiodes or voltages corresponding to the signal charges; insulating films disposed on the semiconductor substrate while covering the photodiodes; wiring layers embedded in the insulating films; concave portions on portions of the insulating films above the photodiodes; pad electrodes disposed as layers on the insulating films in pad electrode regions; a passivation film which covers inner walls of the concave portions, which is disposed as a layer above the pad electrodes, and which has a refractive index higher than the refractive index of silicon oxide; and a core layer which is disposed as a layer on the passivation film while filling the concave portions and which has a refractive index higher than the refractive index of silicon oxide, wherein, a shape of a cross-section of a concave portion in a plane parallel to a main surface of the semiconductor substrate is polygonal with one or more outward-convex components having an angular or curved corner, and the wiring layers are disposed in the insulating films to form a mesh structure surrounding the concave portions in which the wiring layers and the insulating films are vertically alternatively laminated.