Patent ID: 9048225
Filing Date: 2015-06-02
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate including a first surface, a second surface, and a through hole extending through the semiconductor substrate from the first surface to the second surface; a first insulating layer that covers the second surface of the semiconductor substrate, wherein the first insulating layer includes an opening that is in communication with the through hole and has a diameter that is the same as that of the through hole; an insulating film that covers a wall surface of the through hole and a wall surface of the opening; a through electrode formed in the through hole and the opening that are covered by the insulating film, wherein the through electrode includes a metal barrier layer, which covers the insulating film in the through hole and the opening, and a conductive layer, which fills the through hole and the opening and which is surrounded by and in contact with the metal barrier layer; a first connection terminal formed on the first insulating layer, the first connection terminal including an electroless plating metal layer that is formed on an end surface of the through electrode and on an the end surface of the insulating film, wherein the first connection terminal has a larger diameter than the through electrode; a wiring pattern and a second insulating layer that are laminated on the first surface of the semiconductor substrate; and an electrode pad connected to the wiring pattern, wherein the through electrode is connected to the wiring pattern.