Patent ID: 11955516
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 11:
12. A method for manufacturing a semiconductor device, the method comprising:
forming a first active pattern extending in a first direction;
forming a second active pattern spaced apart from the first active pattern in a second direction;
forming a field insulating film between the first active pattern and the second active pattern;
forming a first pre-gate structure extending in the second direction and intersecting the first and second active patterns, the first pre-gate structure including a first pre-gate electrode, a first pre-gate spacer, and a first pre-gate capping pattern on the first pre-gate electrode;
forming a second pre-gate structure extending in the second direction and intersecting the first and second active patterns, the second pre-gate structure including a second pre-gate electrode, a second pre-gate spacer, and a second pre-gate capping pattern on the second pre-gate electrode;
forming an interlayer insulating film between the first pre-gate structure and the second pre-gate structure on the field insulating film;
forming a gate separation trench by partially removing the first pre-gate electrode, the first pre-gate spacer, the first pre-gate capping pattern, and the interlayer insulating film, such that the gate separation trench exposes the field insulating film;
forming a connecting spacer by removing a portion of the first pre-gate spacer, such that the connecting spacer is disposed between the gate separation trench and the filed insulating film; and
forming a gate separation structure filling the gate separation trench,
wherein the second pre-gate electrode and the second pre-gate spacer are not removed,
wherein the gate separation structure includes a gate separation liner and a gate separation filling film on the gate separation liner,
wherein a topmost surface of the gate separation liner and a top surface of the first pre-gate capping pattern are on a same plane, and
wherein the connecting spacer protrudes from a top surface of the field insulating film, and the gate separation liner of the gate separation structure contacts the connecting spacer and extends along a top surface and sidewalls of the connecting spacer and along the top surface of the field insulating film.