Patent ID: 9653508
Date: 2017-05-16
CPC Classifications: H01L

Claim:
1. A device comprising: a substrate comprising a front side and a backside; a shallow-trench isolation (STI) region extending from a front side of the substrate into the substrate; a metal shield on the backside of the substrate; a plurality of dielectric layers on the front side of the substrate and on the STI region; a metal pad on the plurality of dielectric layers; an opening extending from the backside of the substrate to penetrate through the substrate, the STI region, and the plurality of dielectric layers, the opening exposing a portion of the metal pad; a passivation layer lining the opening and extending partially along the metal pad, the passivation layer directly adjoining each of the plurality of dielectric layers, the passivation layer extending to cover a top surface of the metal shield; and a bump formed in the opening and electrically connected to the metal pad, the bump directly adjoining the passivation layer.