Patent ID: 8377789
Filing Date: 2013-02-19
Classification: H01L

Abstract:
1. A method for fabricating a resistor, said method comprising: fabricating a resistance structure comprising steps of: providing a first electrode; depositing an insulating dielectric transition-metal oxide material comprising an amorphous layer over the first electrode, wherein said insulating dielectric material is deposited in a concave shape with an edge protruding toward a substrate; depositing a second electrode on the insulating dielectric material in such a way that the insulating dielectric material is at least partially sandwiched between the first electrode and the second electrode and such that the second electrode protrudes with a protrusion into an indentation in the insulating dielectric material towards the first electrode, said protrusion producing focalization of an electric field; and forming a confined conductive region adjacent to the protrusion by applying a conditioning signal at a predetermined voltage to protrusion, said confined conductive region with programmable resistance comprising a conductive filament.