SEMICONDUCTOR MEMORY DEVICE
First Claim
1. A semiconductor memory device, comprising:
- a substrate;
a stacked body including a plurality of electrode layers stacked alternately with a plurality of insulating layers on the substrate;
a channel body provided inside a hole piercing the stacked body, the channel body extending in a stacking direction of the stacked body; and
a memory portion provided between the channel body and each of the plurality of electrode layers;
the hole having a large diameter portion and a small diameter portion, the diameter of the hole being smaller at the small diameter portion than at the large diameter portion,a thickness of the electrode layer adjacent to the small diameter portion being thicker than a thickness of the electrode layer adjacent to the large diameter portion.
5 Assignments
0 Petitions
Accused Products
Abstract
According to one embodiment, a semiconductor memory device includes a stacked body including a plurality of electrode layers stacked alternately with a plurality of insulating layers on the substrate, a channel body provided inside a hole piercing the stacked body, and a memory portion provided between the channel body and each of the plurality of electrode layers. The hole has a large diameter portion and a small diameter portion. The diameter of the hole is smaller at the small diameter portion than at the large diameter portion. A thickness of the electrode layer adjacent to the small diameter portion is thicker than a thickness of the electrode layer adjacent to the large diameter portion.
11 Citations
20 Claims
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1. A semiconductor memory device, comprising:
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a substrate; a stacked body including a plurality of electrode layers stacked alternately with a plurality of insulating layers on the substrate; a channel body provided inside a hole piercing the stacked body, the channel body extending in a stacking direction of the stacked body; and a memory portion provided between the channel body and each of the plurality of electrode layers; the hole having a large diameter portion and a small diameter portion, the diameter of the hole being smaller at the small diameter portion than at the large diameter portion, a thickness of the electrode layer adjacent to the small diameter portion being thicker than a thickness of the electrode layer adjacent to the large diameter portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification