Patent ID: 11871685
Assignee: WINBOND ELECTRONICS CORP.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 15:
16. A method of forming a resistive random-access memory (RRAM) device, comprising:
sequentially depositing a bottom electrode layer, a resistive layer, a high work function material layer, a top electrode layer and a hard mask layer on a substrate;
patterning the hard mask layer and the top electrode layer to form a top electrode and a hard mask, and thus exposing the high work function material layer;
patterning the high work function material layer to form a high work function layer and forming high work function sidewall parts covering sidewalls of the top electrode and sidewalls of the hard mask; and
patterning the resistive layer and the bottom electrode layer to forma resistive material layer and a bottom electrode, thereby constituting a RRAM cell.