Patent ID: 8791554
Filing Date: 2014-07-29
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a substrate comprising a stack of alternating wiring layers and insulating layers, the wiring layers including conductive wiring patterns; primary conductive vias extending through respective ones of the insulating layers and electrically connecting first ones of the wiring patterns on different ones of the wiring layers to provide electrical connections between opposing first and second surfaces of the substrate; and dummy conductive vias extending through respective ones of the insulating layers and electrically connecting second ones of the wiring patterns on different ones of the wiring layers, wherein the dummy conductive vias are arranged in the substrate around a perimeter of a region including the first ones of the wiring patterns, and wherein the dummy conductive vias and the second ones of the wiring patterns electrically connected thereto have a same electric potential to define an electromagnetic shielding structure within the substrate.