Patent ID: 11937425
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A semiconductor device comprising:
gate electrodes spaced apart from each other on a substrate and stacked perpendicularly to an upper surface of the substrate;
interlayer insulating layers alternately stacked with the gate electrodes on the substrate;
a channel layer passing through the gate electrodes and extending perpendicularly to the upper surface of the substrate;
a tunneling insulating layer between side surfaces of the interlayer insulating layers and the channel layer and extending perpendicularly to the upper surface of the substrate;
charge storage layers between the gate electrodes, respectively, and the tunneling insulating layer,
wherein a first layer of the charge storage layers is between a side surface of a first electrode of the gate electrodes and a side surface of the tunneling insulating layer, and between a pair of the interlayer insulating layers that are adjacent to each other in a vertical direction;
first blocking insulating layers on the charge storage layers, respectively,
wherein a first layer of the first blocking insulating layers is on an upper surface and a lower surface of the first layer of the charge storage layers and on a side surface of the first layer of the charge storage layers facing the side surface of the first electrode of the gate electrodes, and between the pair of the interlayer insulating layers that are adjacent to each other in the vertical direction, and
wherein the side surface of the first layer of the charge storage layers has a rounded shape; and
second blocking insulating layers on the gate electrodes, respectively,
wherein a first layer of the second blocking insulating layers is on an upper surface, a lower surface, and the side surface of the first electrode of the gate electrodes, and
wherein the first blocking insulating layers extend between the interlayer insulating layers and the gate electrodes.