Patent ID: 7612442

Claim:
A back-illuminated semiconductor device comprising: a semiconductor substrate, having a photodetecting unit formed on one surface, a recess, opposing the photodetecting unit, of another surface, an outer edge surrounding the recess, and first electrodes disposed on the one surface at the outer edge and electrically connected to the photodetecting unit; a wiring substrate, disposed to oppose the one surface side of the semiconductor substrate and having second electrodes connected via conductive bumps to the first electrodes; and a resin, filling a gap between the wiring substrate and the outer edge with the conductive bumps; wherein the wiring substrate has a first region and second regions, the first region surrounding a region opposing the recess and the second regions extending outward from the first region, wherein the first region and the second regions have lower wettability with respect to the resin than the other regions of the wiring substrate, and the resin surrounds the periphery of the gap between the recess and the wiring substrate except at the second regions that are portions of the periphery, thereby spaces not filled with the resin are formed above the second regions positioned between the semiconductor substrate and the wiring substrate.