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

Claim 0:
1. 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 disposed 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; and
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;
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 a width in a second direction of the second pad region of the second word line is different from a width in the second direction of the protruding portion of the second word line,
wherein the second direction is perpendicular to the first direction, and
wherein the protruding portion of the second word line vertically overlaps a portion of the first pad region of the first word line.