Patent ID: 8525098

Claim:
A solid-state image pickup device having a plurality of pixels integrated on a light-receiving surface, said device comprising: photodiodes (a) which are disposed in pixel regions serving as the light-receiving surface of a semiconductor substrate and (b) which are partitioned on a pixel basis; signal transferring portions (a) which are disposed on the semiconductor substrate and (b) which read signal charges generated and stored in the photodiodes or voltages corresponding to the signal charges; insulating films disposed over the semiconductor substrate and covering the photodiodes; concave portions disposed in portions of the insulating films above the photodiodes; core layers disposed within the concave portions and filling the concave portions, each core layer comprising an inorganic substance that fills its concave portion and a metal oxide distributed within the inorganic substance, wherein the metal oxide comprises titanium oxide, tantalum oxide, niobium oxide, tungsten oxide, zirconium oxide, zinc oxide, indium oxide, or hafnium oxide; and color filters disposed above the core layers.