Patent ID: 7818855

Claim:
A method of forming a thick top electrode on a thin film dielectric formed on a metal foil comprising: providing a metal foil; forming a thin film dielectric on said metal foil; depositing a conductive paste or a conductive tape or a conductive slurry onto said thin film dielectric formed on said metal foil, thereby forming a thick top electrode, wherein the depositing includes screen printing when the paste is used, laminating when the tape is used and casting when the slurry is used; firing the conductive paste, conductive tape or conductive slurry and the dielectric at a temperature in the range between 500° C. and 900° C., thereby forming at least one thick top electrode directly on the thin film dielectric, wherein said thick top electrode has a thickness of from 1 to 30 microns, and wherein said metal foil, said thin film dielectric and said thick top electrode form a capacitor having a capacitance density of greater than 0.5 μF/cm 2 ; and further comprising: reoxidizing the dielectric in a reducing atmosphere having a partial pressure of oxygen from 10 −5 to 10 −6 atmospheres.