Patent ID: 11901359
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A method of manufacturing a semiconductor device, the method comprising:
forming active regions extending in a first direction on a substrate by removing a portion of the substrate;
forming a dummy active region by removing an upper portion of a first active region among the active regions;
forming a second gate separation layer on the dummy active region;
forming a sacrificial structure extending in a second direction crossing the first direction, on the active regions;
removing a portion of the second gate separation layer from outside of the sacrificial structure such that the second gate separation layer remains vertically under the sacrificial structure;
forming source/drain regions on the active regions, at both sides of the sacrificial structure;
forming an opening by removing a portion of the sacrificial structure to expose the second gate separation layer;
forming a first gate separation layer by filling the opening with an insulating material; and
removing the sacrificial structure and forming a gate structure in a region in which the sacrificial structure is removed.