Patent ID: 11908733
Assignee: ASM IP HOLDING B.V.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A semiconductor device comprising:
a substrate;
at least one memory cell string extending to protrude on the substrate;
a first word line connected to a first memory cell among the at least one memory cell string; and
a second word line connected to a second memory cell among the at least one memory cell string,
wherein at least one of the first word line and the second word line comprises:
a word line conductive layer extending toward a channel;
a first conductive layer on the word line conductive layer; and
a second conductive layer on the first conductive layer,
an extension length of a first recess of the first conductive layer is different from an extension length of a second recess of the second conductive layer.