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

Claim 2:
3. The method for manufacturing the semiconductor device according to claim 2,
wherein after the first exposure and before the first development, the method further includes following steps:
removing the first photomask;
placing the second photomask above the second portion of the protective layer, wherein a plurality of second light-transmitting regions for exposing test pads is configured in the second photomask for the second portion of the protective layer; and
performing the second lithography comprising a second exposure and a second development of the second portion of the protective layer with the second photomask at a second exposure dose or a second exposure energy;
wherein the second exposure is performed with a minimum second exposure dose or a minimum second exposure energy to remove the exposed second portion of the protective layer;
and
wherein the minimum second exposure dose or the minimum second exposure energy is greater than the first exposure dose or the first exposure energy respectively.