US3787966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of connecting a contacting wire to a metal contact on the surface of a semiconductor element
Assignee: Telefunken Electronic GmbH
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Filing: 1972-01-21
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Granted: 1974-01-29
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Expires: 1992-01-21
Abstract
Abstract A method of connecting a contacting wire to a metal contact on the surface of a semi conductor element comprises heating the semiconductor element, retaining one end of a wire with an oxidized surface on a contact point of the metal contact, stretching the wire and simultaneously pressing the wire against the contact point and kinking the wire of this point.
Inventors
- 👤 W Klossika
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:38
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/071; H10W72/075; H10W72/0711; H10W72/07141; H10W72/07521; H10W72/07531; H10W72/07532; H10W72/07533; H10W72/07541; H10W72/50; H10W72/531; H10W72/5363; H10W72/551; H10W72/552; H10W72/5522; H10W72/5524; H10W72/59; H10W72/90; H10W72/921; H10W72/926; H10W72/931; H10W72/932; H10W72/951; H10W72/952; H10W74/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A method of connecting a contacting wire to a metal contact on the surface of a semiconductor element, said contacting wire having an oxide skin, comprising the following steps in combination: a. heating said semiconductor element; b. clamping a first portion of said wire to said semiconductor in the region of a contact area of said metal contact; c. bending a second portion of said wire, said second portion being adjacent said first portion; d. simultaneously with said bending step, applying a tensile force to said wire, whereby said second portion is stretched and the oxide skin on said second portion is torn; and e. pressing said stretched second portion against said contact area for effecting a thermo-compression joint with said metal contact of said semiconductor.
Claim 2
Independent Claim
126 words
A method of connecting a contacting wire to a metal contact on the surface of a semiconductor element, said contacting wire having an oxide skin, comprising the following steps in combination: a. heating said semiconductor element; b. clamping a first portion of said wire to said semiconductor in the region of a contact area of said metal contact; c. bending a second portion of said wire, said second portion being adjacent said first portion; d. simultaneously with said bending step, applying a tensile force to said wire, whereby said second portion is stretched and the oxide skin on said second portion is torn; and e. pressing said stretched second portion against said contact area for effecting a thermo-compression joint with said metal contact of said semiconductor.
Claim 3
Dependent Claim
25 words
A method as defined in claim 1, further comprising using aluminum contact wires to contact an aluminum contact on said surface of said semiconductor body.
Claim 4
Dependent Claim
82 words
A method as defined in claim 6, wherein said first portion of said contact wire is held at said contact area by a hold-down blade so that said wire extends obliquely to a tangent of said surface passing through any point of said contact area, said wire is stretched and simultaneously bent by means of a second blade behind said hold-down blade and the bent portion of said wire is applied under pressure to said contact area to produce a thermo-compression joint.
Claim 5
Dependent Claim
18 words
A method as defined in claim 1, said heating step comprising heating said semiconductor element to about 300*C.
Claim 6
Dependent Claim
16 words
A method as defined in claim 1, wherein said tensile force is a pulsating tensile force.
References Cited (Backward Citations)
US3087239A
Cited
US3328875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |