Patent ID: 11895844
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 7:
8. A semiconductor memory device comprising:
a substrate including a plurality of block areas, each of the plurality of block areas being provided to extend in a first direction, and the plurality of block areas being arranged in a second direction that intersects the first direction;
a plurality of members, each of the plurality of members being provided to extend in the first direction, and being respectively disposed at a boundary portion between the plurality of block areas;
a plurality of conductive layers partitioned by the plurality of members, the plurality of conductive layers being arranged in a third direction that intersects the first direction and the second direction, and being disposed separately from each other; and
a plurality of pillars disposed in each of the plurality of block areas, each of the plurality of pillars being provided to penetrate the plurality of conductive layers, a portion at which one of the plurality of pillars and one of the plurality of conductive layers intersect functioning as a memory cell,
wherein at least one member of the plurality of members includes a first portion and a second portion arranged in the first direction,
when either one of one of the first portion and the second portion of the one member is referred to as a third portion, and the other one of the one of the first portion and the second portion of the one member is referred to as a fourth portion, the third portion has a width in the second direction greater than a width of the fourth portion in the second direction,
the fourth portion of the one member includes a seam, and the third portion of the member includes a void,
the one member includes a contact and an insulating film, the contact including a portion provided to extend in the first direction, and the insulating film being provided between the contact and the plurality of conductive layers, and
the contact includes the seam.