Patent ID: 11916100
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. An integrated chip, comprising:
a substrate;
a dielectric structure over the substrate;
a lower conductive wire in the dielectric structure, wherein an upper surface of the lower conductive wire and sidewalls of the dielectric structure delimit a trench in the dielectric structure;
a first electrode in the trench, wherein the first electrode lines the sidewalls of the dielectric structure and the upper surface of the lower conductive wire, and wherein the first electrode comprises a first conductive material;
a first insulative layer in the trench, wherein the first insulative layer lines sidewalls and an upper surface of the first electrode;
a second electrode in the trench, wherein the second electrode lines sidewalls and an upper surface of the first insulative layer, and wherein the second electrode comprises a second conductive material different from the first conductive material;
a second insulative layer in the trench, wherein the second insulative layer lines sidewalls and an upper surface of the second electrode;
a third electrode in the trench, wherein the third electrode lines sidewalls and an upper surface of the second insulative layer, and wherein the third electrode comprises the first conductive material;
a third insulative layer in the trench, wherein the third insulative layer lines sidewalls and an upper surface of the third electrode;
a fourth electrode in the trench, wherein the fourth electrode lines sidewalls and an upper surface of the third insulative layer, and wherein the fourth electrode comprises the second conductive material;
a first contact arranged on a first side of the first electrode, the second electrode, the third electrode, and the fourth electrode, wherein the first contact couples the first electrode to the third electrode; and
a second contact arranged on a second side of the first electrode, the second electrode, the third electrode, and the fourth electrode, opposite the first side, wherein the second contact couples the second electrode to the fourth electrode,
wherein a width of the lower conductive wire is greater than a distance between the sidewalls of the dielectric structure.