Semiconductor device manufacturing: process – Coating of substrate containing semiconductor region or of... – By reaction with substrate
Reexamination Certificate
2001-09-28
2003-12-23
Nelms, David (Department: 2818)
Semiconductor device manufacturing: process
Coating of substrate containing semiconductor region or of...
By reaction with substrate
C361S508000
Reexamination Certificate
active
06667247
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention refers to electrodes for electrolytic capacitors and their production process.
2. Description of the Related Art
It concerns the technical field of materials for electronic devices, especially for electrolytic capacitor applications, which are widely used in electric circuitry applications. Up to the present date, the techniques of manufacturing an electrode for electrolytic capacitors are based on electrochemical processes where the increase of area is obtained by material removal, e.g. by electrochemical etching. However, due to removal of material, the thickness of the substrate in present electrochemical technologies has to be about 100 &mgr;m being comparatively thick with respect to miniaturized applications. Further, the production process is expensive since total power consumption for electrochemical processes is high and chemical waste from production creates disposal problems.
SUMMARY OF THE INVENTION
Accordingly, it is the object of the invention to provide an improved electrode with high capacitance, which enables the use of thin substrate material, and is cheaper, and avoids chemical waste during production, and a production process thereof.
REFERENCES:
patent: 4740385 (1988-04-01), Feuerstein et al.
patent: 4888666 (1989-12-01), Naitoh et al.
patent: 5032461 (1991-07-01), Shaw et al.
patent: 5482743 (1996-01-01), Allegret et al.
patent: 5621607 (1997-04-01), Farahmandi et al.
patent: 5693415 (1997-12-01), Zait et al.
patent: 5748438 (1998-05-01), Davis et al.
patent: 5963417 (1999-10-01), Anderson et al.
patent: 6059847 (2000-05-01), Farahmandi et al.
Andreoni Maria Cesarina
Cagnin Tarcisio Maria
Chiavarotti Giovanni Pietro
Andreoni Maria Cesarina
Becromal S.p.A.
Le Thao P
Wenderoth , Lind & Ponack, L.L.P.
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