Patent ID: 8809983

Claim:
A semiconductor device comprising: a first semiconductor chip, including: a first semiconductor substrate; a first wiring layer having a first wiring portion and a first insulation layer, wherein the first wiring portion extends to a side surface of the first wiring layer; and a second semiconductor chip that is stacked on the first semiconductor chip, including: a second semiconductor substrate; a second wiring layer having a second wiring portion and a second insulation layer, wherein the second wiring portion extends to a side surface of the second wiring layer, wherein opposing surfaces of the first insulation layer and of the second insulation layer are bonded to one another, and wherein the first and second wiring portions are not exposed at the opposing surfaces of the first and second insulation layers, and wherein the respective side surfaces of the first wiring portion and the second wiring portion, which are exposed at the side portions of the first semiconductor chip and the second semiconductor chip, are covered by a conductive layer, and the first wiring portion and the second wiring portion are electrically connected to each other through the conductive layer.