Patent ID: 11925024
Assignee: KIOXIA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. The semiconductor memory device according to claim 11, wherein
the substrate has a ninth region and a tenth region arranged in the second direction, the ninth region is arranged with the eighth region in the first direction, and the tenth region is arranged with the seventh region in the first direction,
each of the plurality of first word line layers includes a ninth word line part provided over the ninth region,
each of the plurality of first interlayer insulating layers includes a twelfth interlayer insulating part provided over the ninth region,
all twelfth interlayer insulating parts of the plurality of first interlayer insulating layers are laminated in the third direction alternately with all ninth word line parts of the plurality of first word line layers,
each of the plurality of third word line layers includes a tenth word line part provided over the tenth region,
each of the plurality of third interlayer insulating layers includes a thirteenth interlayer insulating part provided over the tenth region,
all thirteenth interlayer insulating parts of the plurality of third interlayer insulating layers are laminated in the third direction alternately with all tenth word line parts of the plurality of third word line layers,
the semiconductor memory device comprises:
a fourth semiconductor layer that is provided over the ninth region and extends in the third direction, the fourth semiconductor layer having an outer peripheral surface opposed to a ninth word line parts of the plurality of first word line layers;
a fourth electric charge accumulating film provided over the ninth region and disposed between all ninth word line parts of the plurality of first word line layers and the fourth semiconductor layer;
a fifth semiconductor layer that is provided over the tenth region and extends in the third direction, the fifth semiconductor layer having an outer peripheral surface opposed all tenth word line parts of the plurality of third word line layers; and
a fifth electric charge accumulating film provided over the tenth region and disposed between all tenth word line parts of the plurality of third word line layers and the fifth semiconductor layer.