Patent ID: 11935862
Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method for forming a three-dimensional (3D) memory device, comprising:
providing a semiconductor substrate comprising a carrier substrate, a stop layer, and a filling layer;
forming a memory stack and a plurality of channel structures extending through the memory stack in the semiconductor substrate, each channel structure comprising a memory film, a semiconductor channel, and a channel plug;
forming an interface layer over the semiconductor substrate, the interface layer comprising single crystalline silicon;
forming a plurality of peripheral circuits over the interface layer, the peripheral circuits being electrically connected to the memory stack;
bonding a support substrate to the semiconductor substrate from a first side;
removing the carrier substrate from a second side of the semiconductor substrate to expose a surface, the second side being opposite to the first side; and
forming an interconnect layer on the exposed surface.