Patent ID: 9070698
Filing Date: 2015-06-30
Classification: H01L

Abstract:
1. A method of forming a semiconductor apparatus, comprising: forming a substrate structure comprising a silicon substrate layer; forming an epilayer on the silicon substrate layer; forming an insulator layer on the epilyaer such that insulator layer is interposed between silicon substrate layer and the epilayer; forming a conductive through-substrate via extending through the silicon substrate layer; forming a conductive wall in the substrate structure, the conductive wall being in electrical contact with the silicon substrate layer and having an end that contact the insulator epilayer; forming a semiconductor device in the substrate structure; and forming a through-substrate via in the substrate structure and that is separated completely from the conductive wall, the through-substrate via formed on an opposite side of the conductive wall from the semiconductor device, the through-substrate via separated from the silicon substrate by an insulator.