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

Claim 3:
4. 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;
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;
a line barrier pattern extending between the sidewall of the line and the second interlayer insulating layer; and wherein the line barrier pattern extends on a top surface of the protrusion; and
an etch stop layer extending between the second interlayer insulating layer and the first interlayer insulating layer, and extending between the second interlayer insulating layer and the protrusion; and
wherein the line barrier pattern extends between the line and a portion of the etch stop layer.