US4005456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact system for semiconductor arrangement
Assignee: Telefunken Electronic GmbH
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Filing: 1975-02-10
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Granted: 1977-01-25
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Expires: 1995-02-10
Abstract
Abstract A semiconductor arrangement comprises a semiconductor body with a metal layer thereon whose exterior surface is vapor deposited or sputtered gold, a layer of palladium on the metal layer and a connecting region of electrolytically deposited gold on the palladium layer.
Inventors
- 👤 Leonhard Botzenhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:10
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/071; H10W72/072; H10W72/07231; H10W72/07236; H10W72/20; H10W72/241; H10W72/244; H10W72/251; H10W72/90; H10W72/921; H10W72/922; H10W72/923; H10W72/951; H10W72/952
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
In a semiconductor arrangement including a semiconductor body, a metal layer arranged on a surface of said semiconductor body with said metal layer having, at least on the outside, a vapor deposited or sputtered layer of gold, and a connection region of gold deposited electrolytically on said metal layer and being thicker than said metal layer; the improvement wherein a layer of palladium is arranged between, and in direct contact with, said gold layer and said thicker connection region of gold.
Claim 2
Dependent Claim
81 words
In a semiconductor arrangement including a semiconductor body, a metal layer arranged on a surface of said semiconductor body with said metal layer having, at least on the outside, a vapor deposited or sputtered layer of gold, and a connection region of gold deposited electrolytically on said metal layer and being thicker than said metal layer; the improvement wherein a layer of palladium is arranged between, and in direct contact with, said gold layer and said thicker connection region of gold.
Claim 3
Dependent Claim
18 words
A semiconductor arrangement as defined in claim 1, wherein said palladium layer is an electrolytically deposited palladium layer.
Claim 4
Dependent Claim
18 words
A semiconductor arrangement as defined in claim 1, wherein said palladium layer is 0.05 - 5 μm thick.
Claim 5
Dependent Claim
39 words
A semiconductor arrangement as defined in claim 1, wherein said metal layer comprises a contact conductive path which forms a resistive contact with a region of the semiconductor body and extends on an insulating layer covering said semiconductor surface.
Claim 6
Dependent Claim
35 words
A semiconductor arrangement as defined in claim 4, wherein said metal contact conductive path comprises a plurality of layers of different metals of which the outer layer is said vapor deposited or sputtered gold layer.
Claim 7
Dependent Claim
31 words
A semiconductor arrangement as defined in claim 1, wherein said connection region of electrolytically deposited gold comprises a connection region for wire-less connection to a connection part of a contacting strip.
Claim 8
Dependent Claim
54 words
A semiconductor arrangement comprising: a semiconductor body; a metal layer, including a vapor deposited or sputtered gold exterior, on said semiconductor body; a layer of palladium directly on said metal layer; and a connecting region of electrolytically deposited gold directly on said palladium layer, said connecting region being substantially thicker than said metal layer.
Claim 9
Dependent Claim
54 words
A semiconductor arrangement comprising: a semiconductor body; a metal layer, including a vapor deposited or sputtered gold exterior, on said semiconductor body; a layer of palladium directly on said metal layer; and a connecting region of electrolytically deposited gold directly on said palladium layer, said connecting region being substantially thicker than said metal layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |