Patent ID: 11935783
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A contact structure, comprising:
a first conductive line and a second conductive line;
a line cap disposed on the first conductive line;
a first dielectric layer sandwiched between the first conductive line and the second conductive line;
a catalyst layer disposed on the first dielectric layer;
a dielectric feature disposed directly on the catalyst layer;
an etch stop layer in contact with a top surface of the line cap, a sidewall of the catalyst layer, a sidewall of the dielectric feature, and a top surface of the dielectric feature;
a second dielectric layer over the etch stop layer; and
a contact via extending through the etch stop layer to contact the second conductive line.