SEMICONDUCTOR DEVICES HAVING GATE STRUCTURES

A semiconductor device includes first to fourth gate structures sequentially disposed in a first horizontal direction. Each of the first to fourth gate structures includes a gate electrode and a gate capping layer and first to third source/drain regions disposed among the first to fourth gate structures. A first narrow source/drain contact, a first wide source/drain contact, and a second narrow source/drain contact are disposed among the first to fourth gate structures and contact the first to third source/drain regions, respectively. The first to fourth gate structures are disposed with first to third distances there among. The second distance is greater than the first distance and the third distance. A lower end of the first narrow source/drain contact is disposed at a higher level than a lower end of the first wide source/drain contact.