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

Claim 0:
1. 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 plurality of first portions and a second portion, the plurality of first portions being arranged in the first direction, and the second portion being disposed between any two adjacent ones of the plurality of first portions,
when either one of one of the plurality of first portions and the second portion of the one member is referred to as a third portion, and the other one of the one of the plurality of first portions 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, and the third portion has a length in the first direction greater than the width of the fourth portion in the second direction,
the plurality of first portions of the member have a same layer structure as the second portion,
the fourth portion of the member includes a seam,
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.