Patent ID: 11935929
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A stacked device, comprising:
a reduced height active device layer;
a plurality of lower source/drain regions in the reduced height active device layer;
a lower interlayer dielectric (ILD) layer on the plurality of lower source/drain regions;
a conductive trench spacer in the lower interlayer dielectric (ILD) layer, wherein the conductive trench spacer is adjacent to one of the plurality of lower source/drain regions;
a top active device layer adjacent to the lower interlayer dielectric (ILD) layer;
an upper source/drain section in the top active device layer; and
a shared contact in electrical connection with the upper source/drain section, the conductive trench spacer, and the one of the plurality of lower source/drain regions, the shared electrical contact having a T-shaped geometry contact providing a backside contact to the upper source/drain section, wherein the shared contact further comprises a shared trench liner continuously providing electrical conductivity between the plurality of lower source/drain regions and the upper source drain region in electrical contact through the shared contact.