Patent ID: 8673740
Filing Date: 2014-03-18
Classification: H01L

Abstract:
1. A method for making a semiconductor device having an electrically conductive through-via within a first semiconductor support having a front face and comprising a silicon substrate and an interconnection network adjacent the front face thereof, the method comprising: forming a first insulating layer on the front face of the first semiconductor support; forming a handle substrate comprising a porous layer, an intermediate semiconductor layer on the porous layer, and a second insulating layer on the intermediate semiconductor layer; direct bonding the first insulating layer and the second insulating layer; thinning the silicon substrate of the first semiconductor support so as to form a back face opposite to the front face; forming the electrically conductive through-via; and forming an electrically conductive pillar from a portion of the interconnection network, the conducting pillar passing through the first insulating layer of the first semiconductor support and the second insulating layer, the conducting pillar also protruding from a free face of the first semiconductor support opposite to the back face of the first semiconductor support.