Patent ID: 7851340

Claim:
A method for forming a semiconductor device comprising: removing portions of a sacrificial layer to expose a first seed layer region, wherein the first seed layer region corresponds to a first semiconductor region and a remaining portion of the sacrificial layer corresponds to a second semiconductor region; depositing an epitaxial semiconductor material over the first seed layer region; forming a capping layer overlying the epitaxial semiconductor material and the remaining portion of the sacrificial layer; removing portions of the capping layer to form a capping structure that overlies a part of the remaining portion of the sacrificial layer; removing portions of the sacrificial layer not covered by the capping structure to form a sacrificial structure having sidewalls; forming fin structures adjoining the sidewalls by depositing a semiconductor material along the sidewalls; removing portions of the capping structure to expose portions of sacrificial layer between adjacent fin structures; and removing portions of the sacrificial material between the adjacent fin structures.