Patent ID: 7989927
Filing Date: 2011-08-02
Classification: H01L

Abstract:
1. A silicon substrate for a package comprising: a through electrode which fills a through hole passing through from a bottom surface of a cavity for accommodating a chip of an electronic device to a back surface of the substrate, the bottom surface of the cavity being positioned lower than a top surface of the substrate outside the cavity; an end part of the through electrode in a bottom surface side of the cavity having a connection part to a wiring that forms an electric circuit including the chip of the electronic device; a thin film wiring as the wiring, wherein the connection part is reinforced by a conductor connected to the thin film wiring; and the conductor is a thick film wiring disposed over the thin film wiring at an area aligned with the electrode and overlying an intersection of the electrode and the substrate, wherein the thin film wiring extends outwardly beyond a periphery of the thick film wiring.