Patent ID: 11908798
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An integrated circuit device comprising:
a first interlayer insulating layer on a substrate;
an electrically conductive line on the first interlayer insulating layer;
a second interlayer insulating layer, which extends on the first interlayer insulating layer and opposite a sidewall of the line; and
an electrically conductive contact plug, which at least partially penetrates the first interlayer insulating layer and is electrically connected to a portion of the line, said contact plug comprising a protrusion that extends into a space between: (i) the line, which overlaps a first portion of the protrusion, and (ii) the second interlayer insulating layer, which overlaps a second portion of the protrusion;
wherein the protrusion protrudes from an underlying body portion of the contact plug in a direction perpendicular to a top surface of the substrate, and is in direct contact with the body portion;
wherein the contact plug further comprises a contact barrier pattern, which extends between the first interlayer insulating layer and the body portion; and
wherein the protrusion covers and contacts a topmost surface of the contact barrier pattern.