Patent ID: 8324668
Filing Date: 2012-12-04
Classification: H01L

Abstract:
1. An integrated circuit, comprising: a first operational device having a first transistor, wherein the first transistor includes a first gate having a metal with a first work function selected from a group consisting of an n-type work function, a p-type work function, and a mid-gap work function; a second operational device having a second transistor, wherein the second transistor includes a second gate having a metal with a second work function selected from a group consisting of an n-type work function, a p-type work function, and a mid-gap work function; and an isolation transistor disposed between the first and second transistors, wherein the isolation transistor includes an isolation gate having a metal with a third work function selected from the group consisting of an n-type work function, a p-type work function, and a mid-gap work function; wherein the mid-gap work function is between an n-type work function and a p-type work function; wherein the third work function is different from one of the first work function and the second work function.