Patent ID: 11871573
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 a memory block, the memory block comprising a first memory array structure, a staircase structure, a second memory array structure in a first lateral direction, and a plurality of strings in a second lateral direction perpendicular to the first lateral direction, the staircase structure comprising a staircase zone and a bridge structure adjacent to the staircase zone in the second lateral direction;
a source-select-gate (SSG) cut structure extending in a SSG of the memory stack and between adjacent ones of the plurality of strings, wherein:
the SSG cut structure comprises a first portion between a first string and a second string and extends in the bridge structure in the first lateral direction; and
the staircase zone comprises a first staircase conductively connected to first memory cells in the first string through the bridge structure and a second staircase conductively connected to second memory cells in the second string in the first memory array structure through the bridge structure.