Patent ID: 11862558
Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. The semiconductor device of claim 17, further comprising:
channel structures formed in the first array region and the second array region of the stack;
one or more dummy slit structures formed in the separation region of the connect region;
dummy channel structures formed in the first staircase and the second staircase; and
contact structures formed on the first staircase and the second staircase, the contact structures being positioned on the word line layers in the first staircase and the second staircase, wherein:
a non-quadrilateral tread of the non-quadrilateral treads has a triangular shape that includes three vertexes, each of the three vertexes being positioned at a respective dummy channel structure, a contact structure of the contact structures being positioned on the non-quadrilateral tread.