Patent ID: 11963354
Assignee: SANDISK TECHNOLOGIES, INC.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A three-dimensional memory device, comprising:
an alternating stack of insulating layers and electrically conductive layers located between a first line trench and a second line trench that laterally extend along a first horizontal direction and over a substrate;
memory openings vertically extending through each layer of the alternating stack and located in a memory array region;
memory opening fill structures located in the memory openings, wherein each of the memory opening fill structures comprises a memory film comprising a dielectric layer stack, a vertical semiconductor channel, and a dielectric core comprising a dielectric fill material; and
a perforated wall structure located between the first line trench and the second line trench and including lateral openings at levels of the insulating layers through which a respective insulating layer laterally extends from outside the perforated wall structure into inside the perforated wall structure.