Patent ID: 9640598
Date: 2017-05-02
CPC Classifications: H01L

Claim:
1. A pad electrode structure, comprising: a pad electrode; an interlayer insulating layer on the pad electrode and including a plurality of openings that expose an upper surface of the pad electrode; a conductive barrier layer on the plurality of openings and the interlayer insulating layer; and a planarization insulating layer covering an edge of the conductive barrier layer, the planarization insulating layer being in the openings, wherein the planarization insulating layer exposes a connector portion of the conductive barrier layer, the interlayer insulating layer being between the pad electrode and the exposed connector portion of the conductive barrier layer in a direction orthogonal to a plane of the pad electrode, and an upper surface of the planarization insulating layer is substantially coplanar with the connector portion of the conductive barrier layer.