Patent ID: 9406570
Filing Date: 2016-08-02
CPC Classification: H01L

Claim Text:
1. A field effect transistor device comprising: a substrate; a first insulator layer disposed on the substrate; a semiconductor layer disposed on the first insulator layer; a second insulator layer disposed on the semiconductor layer; a first finFET device, having a first fin and a first dielectric layer, the first fin disposed on and in contact with the first insulator layer and the first dielectric layer surrounds the first fin and is disposed on an in contact with the first insulator layer; a second finFET device, having a second fin and a second dielectric layer, the second fin disposed on and in contact with the second insulator layer and the second dielectric layer surrounds the second fin and is disposed on and in contact with the second insulator layer; and a hardmask layer disposed between a top surface of the first fin and the first dielectric layer, and another hardmask layer disposed between the second fin and the second dielectric layer.