Patent ID: 11889698
Assignee: KIOXIA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A semiconductor storage device comprising:
a plurality of first wiring layers stacked along a first direction;
a first pillar including a first semiconductor layer and extending through the plurality of first wiring layers in the first direction;
a second wiring layer disposed above the first pillar in the first direction and extending along a second direction perpendicular to the first direction;
a semiconductor-containing layer including:
a first portion disposed on an upper end of the first pillar in the first direction,
a second portion contacting the first portion and formed alongside the second wiring layer, and
a third portion contacting an upper end of the second portion and extending along a third direction perpendicular to the first direction and crossing the second direction;

a first insulating layer between each of the first and second portions of the semiconductor-containing layer and the second wiring layer;
a second pillar extending along the first direction through the first wiring layers and
a third wiring layer formed above the second pillar and extending along the second direction, wherein
the semiconductor-containing layer further includes:
a fourth portion disposed on an upper end of the second pillar in the first direction, and
a fifth portion contacting the third and fourth portions and extending along the third wiring layer between the third and fourth portions, and

at least an upper surface of the third portion contains a metal.