Patent ID: 7115451
Filing Date: 2006-10-03
Classification: H01L

Abstract:
1. A method of forming semiconductor circuitry, comprising: providing a first semiconductor structure; the first semiconductor structure comprising a first monocrystalline semiconductor substrate and a semiconductive material projection extending upwardly from an electrical connection with an electrical node supported by the first monocrystalline semiconductor substrate, the semiconductive material projection being conductively-doped to a first dopant type, the first dopant type being either n-type or p-type; bonding a second semiconductor structure onto the first semiconductor structure; the second semiconductor structure comprising a second monocrystalline semiconductor substrate; and forming an electrically conductive interconnect extending into the second monocrystalline semiconductor substrate to electrically connect with the semiconductive material projection; the electrically conductive interconnect being conductively-doped to a second dopant type, the second dopant type being either n-type or p-type, and being a different type than the first dopant type.