Patent ID: 8952461
Filing Date: 2015-02-10
Classification: H01L

Abstract:
1. A semiconductor device, comprising: an element isolation region formed on a semiconductor substrate; an active region defined by the element isolation region; a first gate stack including a first High-K material and a first metal material so that the first gate stack has a first work function, the first gate stack extending on the active region and the element isolation region; a second gate stack including a second High-K material and a second metal material so that the second gate stack has a second work function different from the first work function, the second gate stack extending on the element isolation region so that a gap is provided on the element isolation region between the first and second gate stacks; a first conductive layer formed on the first and second gate stacks and in the gap; a second conductive layer formed on the first conductive layer so that the second conductive layer extends over the first and second gate stacks and the gap; an insulating film formed on the second conductive layer so that the insulating film extends over the first and second gate stacks and the gap, the insulating film having a contact hole exposing the second conductive layer over a portion overlapping the element isolation region and one of the first and second gate stacks; and a contact formed in the contact hole.