Patent ID: 11887978
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method comprising:
forming a first layer including a first backside metal rail and a second backside metal rail separated by a distance along a first direction;
forming a second layer above the first layer along a second direction perpendicular to the first direction, wherein the second layer includes active regions for a set of power switches and another active region, wherein the active regions of the set of power switches are connected to form a contiguous region extending in the first direction, wherein the first backside metal rail is electrically coupled to one or more of the active regions through one or more via contacts, wherein the second backside metal rail is electrically coupled to the another active region through one or more via contacts, wherein a length of the contiguous region of the active regions for the set of power switches along the first direction is at least four times the distance; and
forming a third layer above the second layer along the second direction, wherein the third layer includes a front side metal rail electrically coupled to one or more of the active regions of the set of power switches through one or more via contacts.