Patent ID: 11910605
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A semiconductor storage device, comprising:
a stack including a plurality of first conductive layers stacked in a first direction, a second conductive layer disposed below the plurality of first conductive layers, and a third conductive layer disposed above the plurality of first conductive layers;
a plurality of first columns penetrating the stack in the first direction, each of the first columns including a semiconductor layer;
a first insulator penetrating the stack in the first direction and extending in a second direction intersecting the first direction;
a second insulator at a position separated from the first insulator in a third direction intersecting the first and second directions, the second insulator penetrating the stack in the first direction and extending in the second direction;
a third insulator between the first and second insulators in the third direction and penetrating the stack in the first direction and the third insulator extending in the second direction and including a first portion and a second portion that are spaced from each other in the second direction;
a fourth insulator between the first portion and the second portion and extending in the first and second directions; and
a fifth insulator between the first portion and the second portion above the fourth insulator, and extending in the first and second directions, wherein
the second conductive layer includes two electrically-separated regions between which the third and fourth insulators are provided, and
the third conductive layer includes two electrically-separated regions between which the third and fifth insulators are provided.