Patent ID: 6586289
Filing Date: 2003-07-01
Classification: H01L

Abstract:
A method of fabricating a metal oxide semiconductor field effect transistor (MOSFET) device comprising the steps of:(a) forming a structure having a plurality of patterned gate stacks atop a layer of gate dielectric material; (b) forming a non-conformal film on said structure including at least said plurality of patterned gate stacks; (c) blocking some of the plurality of patterned gate stacks with a first resist, while leaving other patterned gate stacks of said plurality unblocked; (d) implanting first ions into said unblocked patterned gate stacks; (e) removing said first resist and blocking said previously unblocked patterned gate stacks with a second resist; (f) implanting second ions into said patterned gate stacks that are not blocked by said second resist; and (g) removing said second resist and said non-conformal film.