Patent ID: 11972974
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An integrated circuit (IC) structure, comprising:
a transistor comprising a gate structure and source/drain regions on opposite sides of the gate structure;
a source/drain contact over one of the source/drain regions;
a metal oxide layer over the source/drain contact;
a non-metal oxide layer over the metal oxide layer;
a barrier structure over the source/drain contact, wherein the barrier structure forms a first interface with the metal oxide layer and a second interface with the non-metal oxide layer, and the second interface is laterally offset from the first interface;
a via extending through the non-metal oxide layer to the barrier structure; and
a metal nitride layer between the barrier structure and the via.