Patent ID: 11942424
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. An interconnect structure comprising:
one or more metal lines;
one or more vias in direct contact with top surfaces of the one or more metal lines;
one or more dielectric pillars, wherein a height of a top surface of the one or more dielectric pillars is equal to a height of a top surface of the one or more vias, and wherein the top surface of the one or more vias and the top surface of the one or more dielectric pillars are configured to act as a chemical-mechanical planarization stop based on a spacing of the one or more metal lines and the one or more dielectric pillars across the interconnect structure; and
an ultra-low-k dielectric material in direct contact with side surfaces of the one or more metal lines, side surfaces of the one or more vias, and side surfaces of the one or more dielectric pillars.