Patent ID: 6864583
Filing Date: 2005-03-08
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; an active device structure formed in the substrate, and comprising a connection region on the substrate; a plurality of first layer-structure units stacked on or above the active device structure, each of the first layer-structure unit comprising a second layer-structure unit disposed on or above the first layer-structure units, the second layer-structure unit comprising a connection pad disposed on the second insulating layer and electrically connected to the second via plug; a passivation film disposed on the second insulating layer and consisting essentially of a material different from that of the second insulating layer, the passivation film having an opening at a position corresponding to the connection pad; a conductive pad disposed in the opening of the passivation film and on the connection pad, the conductive pad having a top higher than that of the passivation film; a lower insulating layer containing silicon, disposed on the substrate and between the substrate and the first layer-structure units, and consisting essentially of a material different from those of the first and second insulating layers, the lower insulating layer including a lower via hole formed therein; and a lower via plug disposed in the lower via hole, and electrically connected to the connection region, the first via plug being electrically connected to the connection region through the lower via plug.