Patent ID: 11935953
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device comprising:
a substrate including an active region that extends in a first direction;
a gate structure that extends in a second direction that intersects the first direction;
a source/drain region on the active region on at least one side of the gate structure;
a contact plug on the source/drain region on the at least one side of the gate structure;
a contact insulating layer on sidewalls of the contact plug;
an interlayer insulating layer on the substrate; and
a sidewall insulating layer having a first portion that extends in parallel to an upper surface of the substrate and a second portion that extends away from the upper surface of the substrate and in parallel to an outer surface of the source/drain region, when viewed in a cross-sectional view along the second direction,
wherein a lower end of the contact plug is located closer to the upper surface of the substrate than a lower end of the source/drain region is to the upper surface of the substrate, and
wherein the contact insulating layer is between the interlayer insulating layer and the contact plug.