Patent ID: 11925019
Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A three-dimensional (3D) memory device, comprising:
a memory stack comprising conductive layers and dielectric layers interleaving the conductive layers; and
a channel structure extending through the memory stack along a vertical direction, the channel structure having a plurality of protruding potions protruding along a lateral direction and facing the conductive layers, respectively, and a plurality of normal portions facing the dielectric layers, respectively, without protruding along the lateral direction, the channel structures comprising:
a plurality of blocking structures in the protruding portions, respectively; and
a plurality of storage structures in the protruding portions and over the plurality of blocking structures, respectively,
wherein a vertical dimension of each of the blocking structures is nominally the same as a vertical dimension of a respective one of the storage structures over the blocking structure.