Patent ID: 7867883
Filing Date: 2011-01-11
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device, the method comprising: forming an active region including opposing sidewalls and a top surface therebetween protruding from a substrate, the active region extending in a first direction; forming a device isolation layer on the opposing sidewalls of the active region; forming a gate structure crossing over the active region and extending in a second direction intersecting the first direction; recessing the device isolation layer at opposite sides of the gate structure to expose portions of the opposing sidewalls of the active region and to define a recessed device isolation layer covering remaining portions of the opposing sidewalls of the active region; and forming source/drain regions in the active region, the source/drain regions respectively comprising a first impurity region in the top surface of the active region and second impurity regions in the exposed portions of the opposing sidewalls of the active region, the first impurity region having a doping concentration that is greater than that of the second impurity regions.