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

Claim 6:
7. 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; and
a first conductor electrically connected to an upper surface of the third portion of the semiconductor-containing layer and extending along the first direction, wherein
a peripheral length of the upper surface of the third portion is larger than a peripheral length of an upper surface of the first conductor, and
at least an upper surface of the third portion contains a metal.