US4613518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monolithic capacitor edge termination
Assignee: SFE TECHNOLOGIES A CORP OF
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Filing: 1985-01-14
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Granted: 1986-09-23
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Expires: 2005-01-14
Abstract
Abstract Edge termination of monolithic capacitors having thin electrode layers bonded in dielectric resin is accomplished by ashing away some resin to expose electrode edge surfaces, plating the edge surfaces by vapor deposition, and depositing a conductive layer on the coating by electroless plating, schooping or applying conductive epoxy.
Inventors
- 👤 Mooyoung Ham
- 👤 John W. Duffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:42
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/232; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
79 words
The method of edge termination for a monolithic capacitor in which the electrode layers are bonded in spaced relation by dielectric resin comprising the steps of ashing the substantially planar capacitor edge in an oxygen plasma to remove dielectric between the electrode layers and expose narrow electrode surfaces, vapor depositing a film of metal onto said edges so as to coat and electrically connect said narrow electrical surfaces, and overlaying a layer of conductive material onto said metal coating.
Claim 2
Independent Claim
79 words
The method of edge termination for a monolithic capacitor in which the electrode layers are bonded in spaced relation by dielectric resin comprising the steps of ashing the substantially planar capacitor edge in an oxygen plasma to remove dielectric between the electrode layers and expose narrow electrode surfaces, vapor depositing a film of metal onto said edges so as to coat and electrically connect said narrow electrical surfaces, and overlaying a layer of conductive material onto said metal coating.
Claim 3
Dependent Claim
17 words
The method of claim 1 in which said electrode layers are aluminum and said metal is nickel.
Claim 4
Dependent Claim
22 words
The method of claim 1 in which said overlaying step involves immersing said coating edge in an electroless bath of dissolved nickel.
Claim 5
Dependent Claim
22 words
The method of claim 1 in which said overlaying step involves coating said material with a conductive epoxy, and curing said epoxy.
Claim 6
Dependent Claim
17 words
The method of claim 1 in which said overlaying step involves schooping the metal coating with zinc.
Claim 7
Dependent Claim
19 words
The method of claim 1 in which the layer of conductive material is covered by a film of tin.
Claim 8
Dependent Claim
104 words
In a miniature monolithic capacitor having electrode layers about 200 to 500 angstroms thick bonded in spaced relation by dielectric resin layers about one to one and a half microns thick, an edge termination structure comprising, in combination, an outer layer of electrically conductive material having one surface exposed to define an electrical termination surface, said electrode layers extending from said resin layers and defining narrow electrode surfaces disposed approximately perpendicular to said termination surface, and a film of metal disposed between and coating both said narrow electrode surfaces and said layer of conductive material so as to electrically and physically connect the same.
Claim 9
Dependent Claim
104 words
In a miniature monolithic capacitor having electrode layers about 200 to 500 angstroms thick bonded in spaced relation by dielectric resin layers about one to one and a half microns thick, an edge termination structure comprising, in combination, an outer layer of electrically conductive material having one surface exposed to define an electrical termination surface, said electrode layers extending from said resin layers and defining narrow electrode surfaces disposed approximately perpendicular to said termination surface, and a film of metal disposed between and coating both said narrow electrode surfaces and said layer of conductive material so as to electrically and physically connect the same.
References Cited (Backward Citations)
US1758473A
Cited
US3284684A
Cited
US3891901A
Cited
US3992761A
Cited
US4102021A
Cited
US4226011A
Cited
US4504884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |