Patent ID: 8169084
Filing Date: 2012-05-01
Classification: H01L

Abstract:
1. A bond pad structure, comprising: a substrate having a surface to be electrically contacted; a first isolator layer contacting the surface of the substrate in a first region; a first metal layer contacting the surface of the substrate in a second region adjacent the first region and partly overlapping the first isolator layer; a second isolator layer at least partly overlapping the first isolator layer and the first metal layer; a second metal layer at least partly overlapping the second isolator layer in the second region; wherein a maximum thickness of the second metal layer perpendicular to the surface of the substrate is smaller than a maximum thickness of the first isolator layer perpendicular to the surface of the substrate; and wherein the maximum distance of a surface of the second metal layer away from the substrate to the surface of the substrate is smaller by a gap amount than the maximum distance of a surface of the second isolator layer away from the substrate to the surface of the substrate.