Patent ID: 11935830
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. An integrated circuit comprising a cell, comprising:
a substrate;
a device formed in the substrate;
a frontside conductive layer formed over a frontside of the substrate and electrically connected to the device;
a first backside conductive layer formed over a backside of the substrate, the first backside conductive layer comprising a first plurality of conductive segments;
a second backside conductive layer formed over the first backside conductive layer and comprising a second plurality of conductive segments that are configured to transmit power signals;
a first active diffusion (AD) region formed in the backside of the substrate; and
a second AD region formed in the backside of the substrate and adjacent the first AD region, wherein:
the first plurality and the second plurality of conductive segments cover the first AD region from directly above second backside conductive layer and define an opening directly above the second AD region such that the second AD region is exposed from above the second backside conductive layer and detectable with at least one of a laser, an emission microscopy, or an electron beam from above the second backside conductive layer; and
one area of the backside of the substrate that is covered by the conductive segments comprises a power region of the cell that is detectable with at least one of the laser, the emission microscopy, or the electron beam from above the second backside conductive layer.