Patent ID: 7190033
Filing Date: 2007-03-13
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a workpiece; a first transistor formed in a first region of the workpiece, the first transistor having a first source, a first drain, and a first gate; a second transistor formed in a second region of the workpiece, the second transistor having a second source, a second drain, and a second gate; a first insulating layer disposed over at least the second source or the second drain of the second transistor; and a second insulating layer disposed over at least the first source or the first drain of the first transistor and over the first insulating layer over the second source or the second drain of the second transistor, the second insulating layer comprising a different material than the first insulating layer, wherein the second insulating layer increases surface tension of a top surface of the first source or the first drain of the first transistor, and wherein the first insulating layer comprises a material that reduces surface tension of a top surface of the second source or the second drain of the second transistor.