Patent ID: 9431450
Filing Date: 2016-08-30
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a first semiconductor section including a first multilayer wiring layer at one side thereof, the first semiconductor section further including a photodiode; a second semiconductor section including a second multilayer wiring layer at one side thereof, the first and second semiconductor sections being secured together; a third semiconductor section including a third multilayer wiring layer at one side thereof, the second and the third semiconductor sections being secured together such that the first semiconductor section, second semiconductor section, and the third semiconductor section are stacked together; a first contact connecting a first wiring layer of the first multilayer wiring layer and a conductive material disposed in a film of the second semiconductor section, the film of the second semiconductor section disposed at a side of the second semiconductor section that is opposite to the side at which the second multilayer wiring layer is disposed, wherein the first contact includes: a second contact connecting a second wiring layer of the second multilayer wiring layer and a third wiring layer of the third multilayer wiring layer, wherein the second contact includes: