Patent ID: 6262451
Filing Date: 2001-07-17
Classification: H01L,Y10S

Abstract:
An electrode structure for a multi-threshold voltage device comprising:a semiconductor substrate having a surface;a first electrode material positioned in overlying relationship on the surface of the substrate and defining a first side wall substantially perpendicular to the surface of the substrate;a first nonconductive side wall spacer formed on the first side wall and defining a second side wall substantially parallel to and spaced from the first side wall;a second electrode material formed in overlying relationship to the surface of the substrate and formed on the second side wall so as to define a third side wall substantially parallel to and spaced from the second side wall, the first and second electrode materials being electrically connected as first and second electrodes in a common semiconductor device; anda layer of electrode dielectric material positioned on the surface of the substrate between the substrate and the first nonconductive side wall spacer, and the substrate and at least one of the first and second electrode materials, whereby the first and second electrode materials are positioned on differing thicknesses of electrode dielectric material, with the first electrode material being positioned over a thinner section of electrode dielectric material than the second electrode, for requiring a larger activating voltage for the second electrode than the first electrode.