Patent ID: 11901313
Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A three-dimensional (3D) memory device, comprising:
a core array region, comprising:
a memory stack, the memory stack comprising a plurality of conductor layers and a plurality of dielectric layers stacked alternatingly;
a first semiconductor layer disposed over the memory stack; and
a channel structure extending through the memory stack and the first semiconductor layer; and

a staircase region adjacent to the core array region, comprising:
a staircase structure, wherein edges of the plurality of conductor layers and the plurality of dielectric layers of the memory stack extend to the staircase structure;
a supporting structure comprising a heterogeneous structure disposed over the staircase structure; and
a plurality of contacts contacting the plurality of conductor layers in the staircase structure,

wherein the first semiconductor layer overlaps the core array region in a plan view of the 3D memory device and the supporting structure overlaps at least a portion of the staircase region in the plan view of the 3D memory device.