Patent ID: 7087477
Filing Date: 2006-08-08
Classification: H01L,Y10S

Abstract:
1. A method of forming a semiconductor device, the method comprising the steps of: forming a patterned hard mask on a semiconductor substrate, wherein a first portion of the hard mask is oriented in a first direction, and wherein a second portion of the hard mask is oriented in a second direction that differs from the first direction; anisotropically etching the substrate, using the hard mask as an etching mask, to form a fin body, wherein the fin body has a first portion with a sidewall oriented in the first direction and oriented on a first plane that provides a first carrier mobility, and wherein the fin body has a second portion with a sidewall oriented in the second direction and oriented on a second plane that provides a second carrier mobility, wherein the second carrier mobility differs from the first carrier mobility; forming a transfer transistor at the first portion of the fin body; and forming a latch transistor at the second portion of the fin body, wherein the transfer transistor comprises an n-channel transistor and wherein the latch transistor comprises an n-channel transistor, wherein the transfer transistor and the storage transistor are formed as part of a memory cell, and wherein the transfer transistor is coupled to pass data to the storage transistor.