Patent ID: 8741743
Filing Date: 2014-06-03
Classification: H01L

Abstract:
1. A method of making a semiconductor device, the method comprising: obtaining a semiconductor structure comprising (a) a first semiconductor layer having a first crystallographic orientation, (b) a second semiconductor layer having a second crystallographic orientation distinct from said first crystallographic orientation wherein the second semiconductor layer includes an active region and an inactive region, and (c) an electrically insulating layer disposed between said first semiconductor layer and said second semiconductor layer; forming epitaxy features including a set of epitaxy active features in the active region of the second semiconductor layer and a set of epitaxy dummy features in the inactive region of the second semiconductor layer and, wherein said forming includes: epitaxially growing the epitaxy features from said exposed portions of said first semiconductor layer, wherein each of the epitaxial features: performing a first chemical mechanical polish; forming isolation features including a set of isolation dummy features in the inactive region and a set of isolation trench features in the active region, wherein said forming includes: performing a second chemical mechanical polish.