US4563543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra high-frequency circuit with metallized through hole
Assignee: US Philips Corp
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Filing: 1984-02-02
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Granted: 1986-01-07
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Expires: 2004-02-02
Abstract
Abstract An ultra high frequency circuit formed on an insulating plate having first and second surfaces on opposite sides and having at least one hole formed through the plate and defined by a side wall connecting the surfaces. The side wall is covered by a deposition including overlapping layers of gold and gold-platinum for connecting, respectively, a gold connection track on the one surface with a silver alloy conductive layer. The overlapping gold/gold-platinum layers provide metallurgically-stable interfaces with the gold connection track and the silver alloy conductive layer. This prevents a metallurgically unstable condition which would exist if the gold connection track were directly connected to the silver alloy conductive layer. .
Inventors
- 👤 Georges Kersuzan
- 👤 Michel Picault
- 👤 Roland Sourdillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:37
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/40; H05K3/4038; H05K3/4053; H05K3/4061; H10; H10W; H10W70/00; H10W70/01; H10W70/05; H10W70/095; H10W70/60; H10W70/611; H10W70/62; H10W70/63; H10W70/635; H10W90/00; H05K1/00; H05K1/02; H05K1/0213; H05K1/0237; H05K1/03; H05K1/0306; H05K1/09; H05K1/092; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/035; H05K2201/0388; H05K2201/0391; H05K2201/07; H05K2201/0707; H05K2201/0715; H05K2201/09; H05K2201/09818; H05K2201/09981; H05K2203/00; H05K2203/15; H05K2203/1572; H05K3/22; H05K3/24; H05K3/245; H05K3/247; H05K3/248; Y; Y10; Y10S; Y10S428/00; Y10S428/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
An ultra high frequency circuit comprising an insulating plate having first and second surfaces on opposite sides and having a hole formed through the plate and defined by a side wall extending between said surfaces, said circuit including a conductive connection track on the first surface, a conductive layer on the second surface, of a material which would form a metallurgically-unstable interface with the conductive connection track material, and a deposition on said side wall including a connecting layer in contact with the conductive connection track and the conductive layer, said connecting layer consisting essentially of an electrically-conductive alloy which forms metallurgically-stable interfaces with both the material of the conductive connection track and the material of the conductive layer.
Claim 2
Dependent Claim
119 words
An ultra high frequency circuit comprising an insulating plate having first and second surfaces on opposite sides and having a hole formed through the plate and defined by a side wall extending between said surfaces, said circuit including a conductive connection track on the first surface, a conductive layer on the second surface, of a material which would form a metallurgically-unstable interface with the conductive connection track material, and a deposition on said side wall including a connecting layer in contact with the conductive connection track and the conductive layer, said connecting layer consisting essentially of an electrically-conductive alloy which forms metallurgically-stable interfaces with both the material of the conductive connection track and the material of the conductive layer.
Claim 3
Dependent Claim
32 words
A circuit as in claim 1 where the conductive connection track consists essentially of gold, the conductive layer consists essentially of a silver alloy, and the connecting layer consists essentially of gold-platinum.
Claim 4
Dependent Claim
54 words
A circuit as in claim 1 or 2 where part of said deposition is formed by a second layer in contact with the connecting layer and the conductive connection track, said second layer consisting essentially of a metal which forms metallurgically-stable interfaces with the materials of said connecting layer and said conductive connection track.
Claim 5
Dependent Claim
32 words
A circuit as in claim 2 where part of said deposition is formed by a second layer, consisting essentially of gold, in contact with the connecting layer and the conductive connection track.
Claim 6
Dependent Claim
24 words
A circuit as in claim 1 where the conductive connection track extends into the hole and overlies at least part of the connecting layer.
Claim 7
Dependent Claim
114 words
An ultra high frequency circuit comprising an insulating plate having first and second surfaces on opposite sides and having a hole formed through the plate and defined by a side wall extending between said surfaces, said circuit including a conductive connection track of a first material on the first surface, a conductive layer of a second material, which would form a metallurgically-unstable interface with the first material, on the second surface, and an electrically-conductive deposition on said side wall including first and second portions in contact with the first and second materials, respectively, said portions each consisting of a material which forms a metallurgically-stable interface with said material with which it is in contact.
Claim 8
Dependent Claim
114 words
An ultra high frequency circuit comprising an insulating plate having first and second surfaces on opposite sides and having a hole formed through the plate and defined by a side wall extending between said surfaces, said circuit including a conductive connection track of a first material on the first surface, a conductive layer of a second material, which would form a metallurgically-unstable interface with the first material, on the second surface, and an electrically-conductive deposition on said side wall including first and second portions in contact with the first and second materials, respectively, said portions each consisting of a material which forms a metallurgically-stable interface with said material with which it is in contact.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |