Patent ID: 8159049
Filing Date: 2012-04-17
Classification: H01L,Y10S

Abstract:
1. A semiconductor substrate including a plurality of photodetectors, each photodetector of the plurality having an active area on a first surface of the substrate and a further active area on the side of a second surface of the substrate, wherein each photodetector of the plurality is provided with an adjacent conductive via electrically isolated from the substrate, from the first surface of the substrate to the second surface of the substrate, for connecting the active area to the second surface of the substrate, wherein the conductive vias comprise respective polysilicon conductive elements formed on the inner walls of the vias, the second surface providing electrical connections for the active areas and the further active areas of the plurality of photodetectors, and wherein there is provided a further conductive element from the side of the first surface of the substrate to the side of the second surface within at least one of the conductive vias, said further conductive element being electrically isolated from the polysilicon conductive element of the conductive via within which said further conductive element is contained.