Patent ID: 11889777
Assignee: KIOXIA CORPORATION
Field: nan (nan)
Classification: CPC H | IPC H

Claim 17:
18. A semiconductor memory device comprising:
a substrate;
a first wiring disposed above the substrate and extending in a first direction;
a second wiring disposed between the substrate and the first wiring and extending in a second direction crossing the first direction;
a third wiring being adjacent to the second wiring in a third direction crossing the first and second directions, being electrically connected to the second wiring, and extending in the second direction;
a fourth wiring disposed between the substrate and the third wiring and extending in the first direction;
a fifth wiring being adjacent to the fourth wiring in the third direction, being electrically connected to the fourth wiring, and extending in the first direction;
a sixth wiring disposed between the substrate and the fifth wiring and extending in the second direction;
a seventh wiring disposed between the substrate and the sixth wiring and extending in the first direction;
an eighth wiring being adjacent to the second wiring in the first direction and extending in the second direction;
a ninth wiring being adjacent to the sixth wiring in the first direction and extending in the second direction;
a first memory cell disposed between the first wiring and the second wiring;
a second memory cell disposed between the third wiring and the fourth wiring;
a third memory cell disposed between the fifth wiring and the sixth wiring;
a fourth memory cell disposed between the sixth wiring and the seventh wiring;
a fifth memory cell disposed between the first wiring and the eighth wiring;
a sixth memory cell disposed between the fifth wiring and the ninth wiring;
a first contact disposed between the first wiring and the seventh wiring, the first contact extending in the third direction and being electrically connected to the first wiring and the seventh wiring;
a second contact disposed between the first contact and the seventh wiring, the second contact extending in the third direction and including one end portion connecting the first contact and another end portion opposite to the one end portion in the third direction;
a third contact disposed between the second contact and the seventh wiring, the third contact extending in the third direction and being electrically connected to the first wiring and the seventh wiring;
a fourth contact being connected to the fifth wiring and extending in the third direction; and
a fifth contact being electrically connected to the fourth contact and extending in the third direction, wherein the first contact is disposed between the first memory cell and the fifth memory cell, and the fourth contact is disposed between the third memory cell and the sixth memory cell.