Patent ID: 8848075

Claim:
A semiconductor device comprising: a first semiconductor section including a first semiconductor substrate and a first multilayer wiring layer at one side thereof, the first semiconductor section further comprising a photodiode and a plurality of transistors formed within the semiconductor section, wherein at least one of the plurality of transistors includes a transfer transistor having drain and source regions formed within a well region of the first semiconductor substrate; a second semiconductor section including a second semiconductor substrate and a second multilayer wiring layer at one side thereof, the second semiconductor section further comprising a signal processing circuit that includes a plurality of transistors formed within the second semiconductor section, wherein the first and second semiconductor sections are secured together with the respective first and second multilayer wiring layer sides of the first and second semiconductor sections facing each other; an inter-substrate connection comprising a first portion of a conductive material extending through the first semiconductor section to a first wiring layer of the second multilayer wiring layer of the second semiconductor section and a second portion of the conductive material extending through at least a portion of the first semiconductor section to a first wiring layer of the first multilayer wiring layer, by means of which the first and second wiring layers are in electrical communication, wherein an insulating layer in contact with the first portion of the conductive material and an insulating layer in contact with the second portion of the conductive material prevents the first semiconductor section and the inter-substrate connection from being electrically connected to each other.