Patent ID: 9087722
Filing Date: 2015-07-21
Classification: H01L

Abstract:
1. A semiconductor structure comprising multiple finFET devices each comprising different thickness gate oxides and formed in a semiconductor substrate, the structure comprising: a semiconductor substrate comprising a first fin and a second fin; a first gate stack comprising a first terminal located above the first fin, and a first pair of dielectric spacers disposed on opposite sides of the first gate stack, the first gate stack comprising a dielectric layer located between the first fin and the gate terminal and between the gate terminal and the pair of spacers; a second gate stack comprising a gate oxide and a second terminal located above the second fin, and a second pair of dielectric spacers disposed on opposite sides of the second gate stack, the gate oxide being located on top of the second fin and the gate terminal being located on top of the gate oxide, the second gate stack comprising the dielectric layer located between the gate oxide and the gate terminal and between the gate terminal and the pair of spacers.