Patent ID: 11877452
Assignee: SANDISK TECHNOLOGIES, INC.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A memory device, comprising:
an alternating stack of insulating layers and electrically conductive layers;
a memory opening vertically extending through the alternating stack; and
a memory opening fill structure located in the memory opening and comprising a vertical semiconductor channel, a memory material layer having a laterally-undulating vertical cross-sectional profile and laterally surrounding the vertical semiconductor channel, a vertical stack of insulating material portions which protrude from the insulating layers into the memory opening and a blocking dielectric layer contacting an entirety of inner sidewalls of the vertical stack of insulating material portions and contacting an entirety of an outer sidewall of the memory material layer,
wherein an entirety of the blocking dielectric layer does not extend outside of a cylindrical vertical plane extending through vertical cylindrical outer sidewalls of the vertical stack of insulating material portions.