Patent ID: 11894463
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 14:
15. The method as claimed in claim 14, wherein forming the dummy gate structure includes:
forming a dummy gate insulating layer on an upper surface of the channel stack;
forming a dummy gate layer on the dummy gate insulating layer;
patterning the dummy gate insulating layer and the dummy gate layer to form the dummy gate insulating layer pattern and the dummy gate, such that a portion of the dummy gate insulating layer pattern protrudes outwardly with respect to a sidewall of the dummy gate; and
removing the portion of the dummy gate insulating layer pattern, such that the dummy gate insulating layer pattern is recessed inwardly with respect to the sidewall of the dummy gate.