Solid Electrolytic Capacitor Containing A Vapor-Deposited Barrier Film
AssigneeAVX Corporation
InventorsJan Petrzilek, Mitchell D. Weaver, Miloslav Uher
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Abstract
A capacitor comprising a solid electrolytic capacitor element that contains a sintered porous anode body, a dielectric that overlies the anode body, and a solid electrolyte that overlies the dielectric. The capacitor further contains a barrier film that is formed by vapor deposition and that is positioned between the dielectric and the solid electrolyte or overlies the dielectric.
Claims44
A capacitor comprising a solid electrolytic capacitor element that contains a sintered porous anode body, a dielectric that overlies the anode body, and a solid electrolyte that overlies the dielectric, wherein the capacitor further contains a barrier film that is formed by vapor deposition, the barrier film being positioned between the dielectric and the solid electrolyte or overlying the solid electrolyte.
A method for forming a solid electrolytic capacitor element, the method comprising:
- positioning a capacitor element with a reactor vessel, wherein the capacitor element comprises a sintered porous anode body and a dielectric overlying the anode body;
- forming a barrier film on the capacitor element by a vapor deposition process, the process including subjecting the capacitor element to a reaction cycle that includes contacting the capacitor element with a gaseous precursor compound that bonds to a surface of the dielectric;
- and
- applying a solid electrolyte over the film.
A method for forming a solid electrolytic capacitor element, the method comprising:
- positioning a capacitor element with a reactor vessel, wherein the capacitor element comprises a sintered porous anode body and a dielectric overlying the anode body;
- applying a solid electrolyte over the film;
- and
- forming a barrier film on the capacitor element by a vapor deposition process, the process including subjecting the capacitor element to a reaction cycle that includes contacting the capacitor element with a gaseous precursor compound that bonds to the solid electrolyte.
Dependencies are inferred from the claim text.