Patent ID: 8716120

Claim:
A method, comprising: forming a metal-containing electrode material in a first gate opening of a first gate electrode structure of a first transistor and in a second gate opening of a second gate electrode structure of a second transistor; forming a sacrificial material selectively in said second gate opening so as to cover a portion of said metal-containing electrode material at a bottom of said second gate opening while exposing an upper portion of said metal-containing electrode material in an upper portion of said second gate opening and substantially an entirety of said metal-containing electrode material in said first gate opening; removing said exposed entirety of said metal-containing electrode material from said first gate opening and said exposed upper portion of said metal-containing electrode material from said second gate opening while using said sacrificial material as an etch mask so as to preserve a lower portion of said metal-containing electrode material at said bottom of said second gate opening; removing said sacrificial material from said second gate opening; and forming a conductive fill material in said first and second gate openings.