Patent ID: 11901238
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device structure, comprising:
a transistor;
a conductive feature on the transistor;
a dielectric layer over the conductive feature; and
an electrical connection structure in the dielectric layer and on the conductive feature, wherein the electrical connection structure includes a first grain of a first metal material and a first inhibition layer extending along a grain boundary of the first grain of the first metal material, the first inhibition layer is made of a second metal material, and the first metal material and the second metal material have different oxidation/reduction potentials, wherein the first inhibition layer extends vertically along a first side of the grain boundary of the first grain of the first metal material and laterally below a bottom of the grain boundary of the first grain of the first metal material.