Patent ID: 11950521
Assignee: WINBOND ELECTRONICS CORP.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A method of forming a resistive random-access memory (RRAM) device, comprising:
sequentially depositing a bottom electrode layer, a work function material layer, a bottom resistive layer, a top resistive layer, and a top electrode layer on a substrate;
patterning the top electrode layer and the top resistive layer to form a top electrode and a top part of a resistive material layer;
forming spacers covering sidewalls of the top part;
patterning the bottom resistive layer, the work function material layer and the bottom electrode layer to form a bottom part of the resistive material layer, a work function layer and a bottom electrode; and
forming work function spacers covering sidewalls of the bottom part, thereby constituting a RRAM cell.