Patent ID: 7674697
Filing Date: 2010-03-09
Classification: H01L

Abstract:
1. A method for making a field-effect transistor, comprising the steps of: providing a gate structure including a gate material overlying a gate dielectric disposed on a substrate; forming a layer of insulating material covering the gate structure, a thickness of the layer of insulating material being less at sidewalls of the gate structure than on a top surface of the gate structure; removing a portion of the layer of insulating material so that the sidewalls of the gate structure are exposed while at the same time leaving the top surface of the gate structure being covered by the layer of insulating material; forming a layer of metal covering the gate structure and on top of the layer of insulating material remaining on top of the gate structure so that the metal is in contact with the sidewalls of the gate structure; and performing a silicidation process in which a metal silicide is formed from the gate material and the metal, the gate material thereby being fully silicided.