Patent ID: 11935920
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A device comprising:
a first source/drain region;
a second source/drain region;
a contact etch stop layer having a horizontal portion extending from the first source/drain region to the second source/drain region;
an inter-layer dielectric over the contact etch stop layer;
a first source/drain contact extending through the inter-layer dielectric, the first source/drain contact connected to the first source/drain region;
a second source/drain contact extending through the inter-layer dielectric, the second source/drain contact connected to the second source/drain region; and
an isolation feature between the first source/drain contact and the second source/drain contact, the isolation feature comprising a dielectric liner and a void, the dielectric liner surrounding the void, the dielectric liner contacting the horizontal portion of the contact etch stop layer, the dielectric liner contacting a first sidewall of the first source/drain contact and a second sidewall of the second source/drain contact.