Patent ID: 8546801

Claim:
A semiconductor apparatus comprising: a semiconductor substrate, having a substrate through-hole, formed therein; a penetrating electrode for electrically connecting a device arranged on a surface of said semiconductor substrate and a rear surface of said semiconductor substrate by a first conductive layer formed on an inner surface of said substrate through-hole, wherein said semiconductor apparatus further comprises: a first through-hole, having a larger opening area than said substrate through- hole; a second through-hole, having a larger opening area than said substrate through-hole; a third through-hole, having a smaller opening area than said substrate through-hole; a fourth through-hole, having a smaller opening area than said substrate through-hole; a second conductive layer, formed on the inner surface of said first through-hole and electrically connecting a first electrode pad arranged on the surface of said semiconductor substrate with a first extraction electrode arranged to measure a resistance value from the rear surface of said semiconductor substrate; a third conductive layer, formed on the inner surface of said second through-hole and electrically connecting the first electrode pad with a second extraction electrode arranged to measure a resistance value between the first extraction electrode and the second extraction electrode from the rear surface of said semiconductor substrate; a fourth conductive layer, formed on the inner surface of said third through-hole and electrically connecting a second electrode pad arranged on the surface of said semiconductor substrate with a third extraction electrode arranged to measure a resistance value from the rear surface of said semiconductor substrate; and a fifth conductive layer, formed on the inner surface of said fourth through-hole and electrically connecting a second electrode pad with a fourth extraction electrode arranged to measure a resistance value between the third extraction electrode and the fourth extraction electrode from the rear surface of said semiconductor substrate.