Patent ID: 9559008
Date: 2017-01-31
CPC Classifications: H01L

Claim:
1. A method of manufacturing a semiconductor device, the method comprising: forming an isolation region over a substrate between a first fin and a second fin, the isolation region have a first surface facing away from the substrate; forming a first gate stack over the first fin and the second fin, wherein after the forming the first gate stack the first fin comprises a first portion covered by the first gate stack and a second portion that is uncovered by the first gate stack and the second fin comprises a third portion covered by the first gate stack and a fourth portion that is uncovered by the first gate stack; removing the second portion of the first fin to expose a first surface of semiconductor material and removing the fourth portion of the second fin to expose a second surface of semiconductor material; and epitaxially growing a first semiconductor material onto the first surface and epitaxially growing a second semiconductor material onto the second surface, wherein the first semiconductor material merges with the second semiconductor material at a first point that is located a first distance from the first gate stack and does not merge with the second semiconductor material at a second point that is located at a second distance from the first gate stack different from the first distance, wherein the first point and the second point are located a same distance away from the first surface of the isolation region.