Patent ID: 11961880
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A semiconductor structure, comprising:
a substrate;
a first metal layer over the substrate;
a first insulating layer over the first metal layer;
a second metal layer over the first insulating layer;
a second insulating layer over the second metal layer;
a third metal layer over the second insulating layer, and
first, second, and third plugs through the metal layer, the first insulating layer, the second metal layer, the second insulating layer, and the third metal layer,
wherein a first metal-insulator-metal structure includes a first portion of the first metal layer, a first portion of the second metal layer, and a first portion of the third metal layer that are stacked vertically one over another, wherein a second metal-insulator-metal structure includes a second portion of the first metal layer, a second portion of the second metal layer, and a second portion of the third metal layer that are stacked vertically one over another,
wherein the first plug is insulated from the first portion of the first metal layer, the first portion of the second metal layer, and the first portion of the third metal layer, wherein the second plug is insulated from the first portion of the first metal layer and the first portion of the third metal layer and is electrically connected to the first portion of the second metal layer, wherein the third plug is electrically connected to the first portion of the first metal layer and the first portion of the third metal layer and is insulated from the first portion of the second metal layer,
wherein the first and the second portions of the first metal layer are adjacent to each other and there is no other portion of the first metal layer in between,
wherein the first and the second portions of the second metal layer are adjacent to each other and there is no other portion of the second metal layer in between,
wherein the first and the second portions of the third metal layer are adjacent to each other and there is no other portion of the third metal layer in between,
wherein along a first direction, the first portion of the first metal layer is wider than the second portion of the first metal layer, and the first portion of the third metal layer is narrower than the second portion of the third metal layer.