Patent ID: 8647973
Filing Date: 2014-02-11
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device, the method comprising: forming a first interlayer insulating film on a semiconductor substrate; forming a contact pad in the first interlayer insulating film; after forming the contact pad, exposing an upper portion of the contact pad by partially recessing the first interlayer insulating film so that the upper portion of the contact pad protrudes in a vertical direction above the first interlayer insulating film; reducing the upper portion of the contact pad in size by reducing a size of the exposed contact pad; and forming a contact pad spacer on the recessed first interlayer insulating film between the reduced contact pads, after the reduction of the size of the exposed contact pad, wherein the exposed contact pad is reduced in size such that a cross-sectional area, in a direction horizontal to the substrate, of the upper portion of the contact pad is equal to or less than a cross-sectional area of a lower portion of the contact pad that is below the upper portion of the contact pad in a direction horizontal to the substrate.