Patent ID: 9490161
Filing Date: 2016-11-08
CPC Classification: H01L

Claim Text:
1. A method for manufacturing a semiconductor device, the method comprising: forming masks on a hybrid orientation substrate including a first silicon region having a first crystallographic orientation, a second silicon region having a second crystallographic orientation different from the first crystallographic orientation, and an isolation region between the first and second silicon regions, wherein the masks are formed on respective portions of top surfaces of the first and second silicon regions and are distinct from the isolation region; performing a single epitaxy step growing silicon-germanium (SiGe) on the hybrid orientation substrate, wherein the masks cover the respective portions of the top surfaces of the first and second silicon regions during the single epitaxy step, wherein: removing the masks from the respective portions of the top surfaces of the first and second silicon regions after the single epitaxy step; forming a mask on each of the first and second layers; and performing a second epitaxy step to form a third layer on an unmasked portion of the first silicon region and a fourth layer on an unmasked portion of the second silicon region.