Patent ID: 11877441
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 14:
15. The method of fabricating a memory according to claim 13, wherein, after forming the wordline grooves, the method further comprises:
forming a first medium layer at a bottom of the wordline groove;
forming a second medium layer on the first medium layer, the second medium layer covering a sidewall of the active region;
forming a metal layer on the first medium layer and a lateral portion of the second medium layer distal to the active region in the wordline groove, wherein the metal layer is fully filled in the wordline groove and the node plunger slot, and covers the separation layer that remains and the protective layer that remains;
back-etching the metal layer so that the metal layer is lower than the active region; and
forming a third medium layer on the metal layer, a top surface of the third medium layer being flush with a bottom surface of the protective layer.