Patent ID: 8755646

Claim:
A semiconductor structure, comprising: a substrate; a first conductive layer disposed on the substrate, wherein the first conductive layer is a part of a metal interconnection system; a first material layer and a second material layer, both disposed on the substrate, wherein the first conductive layer, the first material layer and the second material layer are located in the same layer, and the first material layer, the second material layer and the first conductive layer have the same height; a second conductive layer disposed on the first conductive layer, wherein the first conductive layer is electrically connected to the second conductive layer, and the metal interconnect system comprises the second conductive layer; and a third material layer and a fourth material layer, both disposed on the first material layer and the second material layer, wherein the second conductive layer, the third material layer and the fourth material layer are located in the same layer, and the third material layer, the fourth material layer and the second conductive layer have the same height, wherein the first material layer has a first tapered end shrinking in a direction from a top view.