Patent ID: 11894226
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The method for manufacturing the semiconductor device according to claim 1, wherein the exposing and developing lithographically of the first portion of the protective layer to form the plurality of grooves comprises following steps:
placing the first photomask above the protective layer, wherein a plurality of first light-transmitting regions is configured in the first photomask for the first portion of the protective layer; and
performing the first lithograph comprising a first exposure and a first development of the first portion of the protective layer with the first photomask at a first exposure dose or a first exposure energy;
wherein a thickness of the first portion of the protective layer after the first development is less than the initial thickness of the protective layer.