Patent ID: 6864161

Claim:
A method of forming a metal oxide semiconductor field effect transistor (MOSFET), device on a semiconductor substrate, comprising the steps of: growing a gate insulator layer on said semiconductor substrate; forming a conductive gate structure on said gate insulator layer, with the conductive structure defined from an overlying conductive layer comprised with first bump features obtained using a first set of deposition conditions featuring a first source flow rate, and defined from an underlying conductive layer comprised with second bump features greater in size than said first bump features of said overlying conductive layer, obtained using a second set of deposition conditions featuring a second source flow rate wherein said second source flow rate is less than said first source flow rate; and forming a lightly doped source/drain region in an area of said semiconductor substrate not covered by said conductive gate structure, forming insulator spacers on sides of said conductive gate structure, and forming a heavily doped source/drain region in an area of said semiconductor substrate not covered by said conductive gate structure or by said insulator spacers.