Patent ID: 6847055

Claim:
A semiconductor device comprising: a substrate having a top surface and a bottom surface; a ridge formed at the top surface of the substrate and comprising at least one layer of a semiconductor material, the ridge having a base attached to the substrate, an upper face located above the base, a first body section located between the base and the upper face, a second body section located between the first body section and the upper face, and at least a first side face located between the ridge's upper face and the base and located to one side of the first and second body sections, the first side face having a first area which spans over the first body section and a second area which spans over the second body section, the first side face further having a straight mesa slope or a forward mesa slope in the first area and a reverse mesa slope in the second area; a dielectric layer disposed on the first side face and covering the first area and at least a portion of the second area which is closest to the first area and “a layer of conductive material disposed over the dielectric layer, the upper face of the ridge, and a portion of the second area of the first side face which is closest to the upper face of the ridge.”