Patent ID: 9691877
Date: 2017-06-27
CPC Classifications: H01L,H05K

Claim:
1. A replacement gate structure, comprising: a lower spacer having a first material; a gate dielectric material lining the lower spacer and over a portion of a fin structure; an upper spacer above the lower spacer and the gate dielectric material lining the lower spacer, the upper spacer being of a different material than the first material; a workfunction material on the gate dielectric material having an open seam; a replacement gate material plugging the open seam of the workfunction material and above the workfunction material, the replacement gate material being in direct contact with the upper spacer; a cap material on the replacement gate material, encapsulating an upper portion of the replacement gate material and in direct contact with sidewalls of the upper spacer; and a self-aligned contact separated from the replacement gate structure by the upper spacer.