Patent ID: 9356131
Filing Date: 2016-05-31
CPC Classification: H01L

Claim Text:
1. A semiconductor structure comprising: a semiconductor region having a conductivity type; a source that touches the semiconductor region, the source having a conductivity type that is opposite to the conductivity type of the semiconductor region; a drain that touches the semiconductor region, the drain lying spaced apart from the source, and having a conductivity type that is opposite to the conductivity type of the semiconductor region; a channel region of the semiconductor region that lies between the source and the drain; a gate dielectric that touches and lies over the channel region; a metal gate that touches and lies over the gate dielectric, the metal gate having a lower width and an upper width that is greater than the lower width; and a non-conductive sidewall spacer that touches the gate dielectric and laterally surrounds both the gate dielectric and the metal gate, the non-conductive sidewall spacer having non-conductive layer and a conformal layer between the non-conductive layer and the gate dielectric such that the conformal layer touches the gate dielectric laterally adjacent an upper width portion of the metal gate and laterally adjacent a lower width portion of the metal gate, a portion of the non-conductive layer and the conformal layer of the non-conductive sidewall spacer lying directly vertically between the semiconductor region and the metal gate.