Patent ID: 9576903
Date: 2017-02-21
CPC Classifications: H01L

Claim:
1. A structure with a conductive plug, comprising: a substrate, having a conductive region therein; a first dielectric layer, an etch stop layer and a second dielectric layer, sequentially disposed on the substrate, wherein a portion of the first dielectric layer and a portion of the etch stop layer are disposed on the conductive region, wherein at least one opening penetrates through the first dielectric layer, the etch stop layer and the second dielectric layer; a conductive plug, filling in the opening and electrically connected to the conductive region, wherein the conductive plug has a side surface and a bottom surface, and the bottom surface of the conductive plug is in direct contact with the conductive region; and a liner, disposed on the etch stop layer and surrounding a portion of the side surface of the conductive plug.