Patent ID: 11910614
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A semiconductor device, comprising:
a first main separation structure and a second main separation structure disposed on a substrate and extending from a first area to a second area;
a plurality of word lines stacked in the first area in a vertical direction perpendicular to an upper surface of the substrate and extended to the second area, the plurality of word lines being between the first main separation structure and the second main separation structure;
a plurality of secondary separation structures disposed in the second area, between the first main separation structure and the second main separation structure, and penetrating through the plurality of word lines;
channel structures disposed in the first area, between the first main separation structure and the second main separation structure, and penetrating through the plurality of word lines; and
gate contact plugs,
wherein each of the plurality of word lines in the second area include extension portions spaced apart from each other by the plurality of secondary separation structures, and a pad region extending from one of the extension portions,
wherein the plurality of word lines include a first word line, a second word line on the first word line, a third word line on the second word line, and a fourth word line on the third word line,
wherein at least two of the second, third, and fourth word lines in the second area further include a respective protruding portion extending from one of the extension portions, and spaced apart from the pad regions and the gate contact plugs.