Patent ID: 11917819
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A three-dimensional semiconductor memory device comprising a unit chip, wherein the unit chip comprises:
a substrate;
a first block and a second block on the substrate, the second block being disposed adjacent to an first edge of the unit chip; and
a first separation structure and a second separation structure, each of which extends in a first direction and a second direction crossing the first direction and divides corresponding one of the first and second blocks,
wherein each of the first and second separation structures includes a first portion extending lengthwise in the first direction and a second portion extending lengthwise in the second direction, and
wherein the first portion of the second separation structure extends from a side surface of the second block to the first edge of the unit chip.