Patent ID: 9437713
Filing Date: 2016-09-06
CPC Classification: H01L

Claim Text:
1. A method comprising: obtaining an intermediate semiconductor device, comprising: applying a spacer layer over the intermediate semiconductor device; etching the intermediate semiconductor device to remove a horizontal portion of the spacer layer to form at least one vertical portion of the spacer layer and to expose a top surface of the plurality of mandrels, the at least one vertical portion of the spacer layer comprising: removing the plurality of mandrels; etching the intermediate semiconductor device to remove at least a portion of the dielectric layer to form a first set of masks under the first set of spacers and a second set of masks under the second set of spacers; forming at least one first fin and at least one second fin, wherein the intermediate semiconductor device now comprises: removing the at least one vertical portion of the spacer layer and the dielectric layer.