Patent ID: 7871875
Filing Date: 2011-01-18
Classification: H01L

Abstract:
1. A method of manufacturing a fin field effect transistor (FinFET), the method comprising: forming at least one active fin on a substrate; forming a gate insulating layer pattern on a surface of the at least one active fin; sequentially forming a first electrode layer and a second electrode layer on the gate insulating layer pattern; patterning the first electrode layer and the second electrode layer to form a first preliminary electrode pattern and a second electrode pattern, the first preliminary electrode pattern being intersected with the at least one active fin; doping the surface of the at least one active fin exposed by the first preliminary electrode pattern and the second electrode pattern to form at least one pair of source/drain expansion regions; and partially removing a sidewall of the first preliminary electrode pattern to form a first electrode pattern having a width less than that of the second electrode pattern.