Patent ID: 11877458
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A Resistive Random-Access Memory (RRAM) comprising:
an internal electrode;
a high k dielectric layer surrounding and in contact with the internal electrode, the high k dielectric layer having an external dielectric side not in contact with the internal electrode;
a lower substrate;
a trench having two or more trench sides, the trench disposed in the lower substrate, the internal electrode and the high k dielectric layer being disposed within the trench and the internal electrode and the high k dielectric layer protruding a protrusion distance above the lower substrate;
an upper substrate disposed on the lower substrate and disposed over at least part of the internal electrode and high k dielectric layer protruding the protrusion distance above the lower substrate and into the upper substrate; and
an interconnect within the lower substrate, the interconnect having an interconnect top, and interconnect bottom, and an interconnect side, the interconnect side being part of one of the trench sides,, wherein the interconnect side is in contact with the external dielectric side of the high k dielectric layer within the trench, and, wherein the protrusion distance is large enough so the internal electrode and the high k dielectric layer protrude through the upper substrate.