Patent ID: 6492242
Filing Date: 2002-12-10
Classification: H01L

Abstract:
A method of forming a metal-oxide-metal, capacitor structure, on a semiconductor substrate, comprising the steps of:depositing a first metal layer, on an underlying dielectric layer; performing a laser ablation oxidation procedure, at a power between about 0.1 to 10 watts, to a top portion of said first metal layer to form a capacitor dielectric layer on a bottom portion of said first metal layer, featuring specific process conditions allowing a higher temperature, between about 1000 to 2000Â° C., to be reached at the top surface of said first metal layer when compared to the temperature reached at other regions of said semiconductor substrate, allowing said capacitor dielectric layer, between about 100 to 400 Angstroms, to be grown on the higher temperature top surface of said first metal layer; depositing a second metal layer on said capacitor dielectric layer; and patterning of said second metal layer, of said capacitor dielectric layer, and of said bottom portion of said first metal layer, to form said metal-oxide-metal, capacitor structure.