Patent ID: 9064707
Filing Date: 2015-06-23
Classification: H01L

Abstract:
1. A bonding contact area on a semiconductor substrate with a reinforcing structure, comprising: at least one first metal layer arranged on the semiconductor substrate and adapted to receive a patterned reinforcing structure, the first metal layer including a first metallic frame formed to surround the patterned reinforcing structure; a third metal layer arranged as a bonding contact layer with a bonding surface above the first metal layer; a second metal layer arranged between the first metal layer and the third metal layer, the second metal layer being structured as a second metallic frame surrounding a centrally arranged island of dielectric; an insulation layer that extends beyond an edge of the bonding surface, the insulation layer being arranged below the bonding surface and above the first metal layer; a first dielectric layer arranged between, and contacting, the first metal layer and the second metal layer, the first dielectric layer including first through-connections that is arranged in an edge area of the first metal layer and an edge area of the second metal layer and that is electrically connecting the first metal layer and the second metal layer; and a second dielectric layer arranged between, and directly contacting, the second metal layer and the third metal layer, the second dielectric layer including second through-connections that is arranged in the edge area of the second metal layer and an edge area of the third metal layer and that is electrically connecting the second metal layer and the third metal layer; wherein the patterned reinforcing structure, when viewed looking down onto the bonding surface, is formed below the bonding surface within the first metal layer, wherein the patterned reinforcing structure comprises dielectric islands, wherein there is a dielectric area extending from under the bonding surface to the semiconductor substrate, wherein outer edges of the first metallic frame, the second metallic frame and the bonding surface are each offset laterally to one another, wherein only a single centrally arranged island of dielectric is provided in a region of the second metal layer surrounded by the second metallic frame, and wherein the first metallic frame is laterally wider than the second metallic frame.