Patent ID: 11910609
Assignee: KIOXIA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor memory device comprising:
a substrate including a first region to a fourth region arranged sequentially in a first direction;
a plurality of first conductive layers extending from the first region to the second region in the first direction and arranged in a second direction intersecting with a surface of the substrate;
a plurality of second conductive layers extending from the fourth region to the second region in the first direction and arranged in the second direction;
a plurality of third conductive layers extending from the first region to the third region in the first direction and arranged in the second direction, the plurality of third conductive layers being disposed at positions in the second direction different from the plurality of first conductive layers;
a plurality of fourth conductive layers extending from the fourth region to the third region in the first direction and arranged in the second direction, the plurality of fourth conductive layers being disposed at positions in the second direction different from the plurality of second conductive layers;
a first semiconductor column disposed in the first region and extending in the second direction, the first semiconductor column being opposed to the plurality of first conductive layers and the plurality of third conductive layers;
a second semiconductor column disposed in the fourth region and extending in the second direction, the second semiconductor column being opposed to the plurality of second conductive layers and the plurality of fourth conductive layers;
a plurality of first contacts disposed in the second region and extending in the second direction, the plurality of first contacts being connected to end portions in the first direction of the plurality of first conductive layers;
a plurality of second contacts disposed in the second region and extending in the second direction, the plurality of second contacts being connected to end portions in the first direction of the plurality of second conductive layers;
a plurality of third contacts disposed in the third region and extending in the second direction, the plurality of third contacts being connected to end portions in the first direction of the plurality of third conductive layers;
a plurality of fourth contacts disposed in the third region and extending in the second direction, the plurality of fourth contacts being connected to end portions in the first direction of the plurality of fourth conductive layers;
a plurality of first wirings disposed in the second region, the plurality of first wirings being electrically connected to the plurality of first contacts and the plurality of second contacts; and
a plurality of second wirings disposed in the third region, the plurality of second wirings being electrically connected to the plurality of third contacts and the plurality of fourth contacts.