Patent ID: 8679950

Claim:
A method of manufacturing a semiconductor device comprising: (a) providing on a first substrate, a laterally extending first semiconductor layer and a laterally extending hard mask layer disposed on the first semiconductor layer, wherein the first semiconductor layer includes under the hard mask layer, a first region and a laterally adjacent but different second region, the first region being formed of a first semiconductor material, the second region being formed of a different second semiconductor material, wherein if the first and second semiconductor materials are both caused to be of a same conductivity type, then the second semiconductor material has a higher charge mobility than does the first semiconductor material of the same conductivity type; (b) forming a mask layer having a first pattern and a laterally spaced apart second pattern on the hard mask layer, the first pattern being located on a portion of the hard mask layer which is over the first region and the second pattern being located on a laterally spaced apart portion of the hard mask layer which is over the second region; and (c) etching the hard mask layer and the first semiconductor layer using the mask layer as an etch mask to form a first fin that includes material of the first region and a second fin that includes material of the second region such that the first fin is formed of the first semiconductor material but not the second semiconductor material, and such that the second fin comprises the second semiconductor material.