Patent ID: 9053966
Filing Date: 2015-06-09
Classification: G11C,H01L,Y10S

Abstract:
1. An integrated circuit device, comprising: a lower silicon layer having a top surface with a first crystal orientation; an upper silicon layer on the lower silicon layer having a first portion with a top surface of a second crystal orientation different from the first crystal orientation and a second portion with the top surface of the first crystal orientation; a first fin in the second portion of the upper substrate, the first fin having a top surface with a first crystal orientation and a sidewall surface with a second crystal orientation; and a second fin in the first portion of the upper substrate, the second fin having a top surface with the second crystal orientation and a sidewall surface with the first crystal orientation; the first fin sidewall surface defining a channel with a first carrier flow direction of a first FinFET, the second fin sidewall defining a channel with a second carrier flow direction of a second FinFET, and the second carrier flow direction being different than the first carrier flow direction.