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

Claim 8:
9. 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; and
channel structures passing through the gate electrodes and extending perpendicularly to the upper surface of the substrate,
wherein each of the channel structures comprises a tunneling insulating layer and a channel layer extending perpendicularly to the upper surface of the substrate, and charge storage layers and first blocking insulating layers on side surfaces of the gate electrodes and between the side surfaces of the gate electrodes and the tunneling insulating layer,
wherein a first layer of the charge storage layers and a first layer of the first blocking insulating layers are separated from a second layer of the charge storage layers and a second layer of the first blocking insulating layers by a first layer of the interlayer insulating layers,
wherein the first blocking insulating layers, together with the tunneling insulating layer, completely surround the charge storage layers, respectively,
wherein upper and lower surfaces of the first blocking insulating layers are in contact with upper and lower surfaces of the interlayer insulating layers,
wherein second blocking insulating layers are between respective ones of the first blocking insulating layers and respective ones of the charge storage layers,
wherein a first layer of the second blocking insulating layers is on an entirety of an upper surface and an entirety of a lower surface of the first layer of the charge storage layers, and
wherein the first layer of the first blocking insulating layers is in contact with the first layer of the second blocking insulating layers and extends between the first layer of the interlayer insulating layers and a respective one of the gate electrodes.