Patent ID: 11942133
Assignee: KEPLER COMPUTING INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 18:
19. A method of fabricating a device structure, the method comprising:
forming a plurality of conductive interconnects in a dielectric in a memory region and one or more conductive interconnects in a logic region;
depositing an etch stop layer on the dielectric and on the plurality of conductive interconnects and on the one or more conductive interconnects;
etching to remove the etch stop layer from a memory region but not from a logic region;
depositing an electrode material on the plurality of conductive interconnects in the memory region and on the etch stop layer in the logic region;
depositing a material layer stack on the electrode material;
forming a plurality of memory devices by etching the material layer stack, wherein the etching forms an individual memory device in the plurality of memory devices above a respective conductive interconnect in the plurality of conductive interconnects in the memory region;
depositing an encapsulation layer on the plurality of memory devices and on the electrode material;
forming a mask on the encapsulation layer and patterning the encapsulation layer and electrode material, wherein the mask is above an individual memory device in the plurality of memory devices;
blanket depositing a dielectric layer;
forming a plurality of openings in the dielectric layer, the plurality of openings exposing a respective memory device in the plurality of memory devices;
forming a respective via electrode in a respective opening in the plurality of openings by depositing a conductive material in the plurality of openings;
forming one or more openings in the dielectric layer and in the encapsulation layer, the one or more openings exposing the one or more conductive interconnects in the logic region; and
forming an interconnect via in a respective one or more openings and a metal line on a respective interconnect via by depositing the conductive material in the one or more openings.