Patent ID: 6927431

Claim:
A semiconductor circuitry construction, comprising: a first semiconductor structure; the first semiconductor structure comprising a first monocrystalline semiconductor substrate having an insulative mass thereover; the first semiconductor structure also comprising a conductively doped semiconductive material projection extending through the insulative mass; the conductively doped semiconductive material projection being a first dopant type; the first dopant type being either n-type or p-type; a second semiconductor structure bonded to the first semiconductor structure; the second semiconductor structure comprising a second monocrystalline semiconductor substrate; and an electrically conductive interconnect extending within the second monocrystalline semiconductor substrate and electrically connecting with the semiconductive material projection at an interface of the electrically conductive interconnect and the semiconductive material projection; the electrically conductive interconnect being a second dopant type semiconductive material; the second dopant type being either n-type or p-type, and being a different type than the first dopant type.