Patent ID: 7253050
Filing Date: 2007-08-07
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, the method comprising: providing a workpiece, the workpiece comprising a first region and a second region; forming a gate dielectric material over the workpiece; forming a first gate material over the gate dielectric material, the first gate material comprising a first metal; implanting a first material that is different from said first metal into the first gate material over the second region of the workpiece to form a second gate metal in the second region of the workpiece; implanting a second material, that is different than said implanted first material, into the first gate material over the first region of the workpiece, forming a third metal; and patterning the first gate material, the second gate metal, and the gate dielectric material to form a first transistor in the first region of the workpiece and a second transistor in the second region of the workpiece, the first transistor including a first gate comprised of the first gate material, and the second transistor including a second gate comprised of the second gate metal.