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

Claim 17:
18. 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;
selection gate lines on the plurality of word lines, the selection gate 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 the selection gate lines; and
gate contact plugs,
wherein each of the plurality of word lines in the second area includes extension portions spaced apart from each other by the plurality of secondary separation structures,
wherein each of the extension portions extends in a first direction parallel to the upper surface of the substrate,
wherein the extension portions include a first extension portion and a second extension portion spaced apart from each other by a first secondary separation structure of the plurality of secondary separation structures,
wherein the plurality of word lines include a first word line and a second word line on the first word line,
wherein the first word line further includes a first pad region extending from the first extension portion of the first word line in the first direction,
wherein the second word line further includes a second pad region extending from the second extension portion of the second word line and a protruding portion extending from the first extension portion of the second word line,
wherein the gate contact plugs contact the first and the second pad regions, and are spaced apart from the protruding portion,
wherein the second pad region and the protruding portion are spaced apart from each other by the first secondary separation structure, and
wherein the selection gate lines do not vertically overlap the first pad region, the second pad region and the protruding portion.