Semiconductor device

Abstract

A semiconductor device includes a substrate that includes a first surface and a second surface, a first source/drain pattern disposed on the first surface of the substrate, a second source/drain pattern disposed on the first surface of the, a first source/drain contact disposed on the first source/drain pattern and connected to the first source/drain pattern, a second source/drain contact disposed on the second source/drain pattern and connected to the second source/drain pattern, a rear wiring line disposed on the second surface of the substrate, a first contact connection via that connects the rear wiring line with the first source/drain contact, a second contact connection via that connects the rear wiring line with the second source/drain contact and is spaced apart from the first contact connection via, and an air gap structure disposed between the first contact connection via and the second contact connection via.