US Patent 9306070 Semiconductor device and method of fabricating the same

A semiconductor device includes: active fins protruding from an active layer and extending in a first direction; a gate structure on the active fins extending in a second direction intersecting the first direction; and a spacer on at least one side of the gate structure, wherein each of the active fins includes a first region and a second region adjacent to the first direction in the first direction, and a width of the first region in the second direction is different from a width of the second region in the second direction.