US4380775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor unit with connecting wires
Assignee: WC Heraus GmbH and Co KG
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Filing: 1980-07-11
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Granted: 1983-04-19
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Expires: 2000-07-11
Abstract
Abstract To reduce failure and breakage of connecting wires connecting specific zones on semiconductor chips to semiconductor frames, the connecting wires are made of an aluminum-copper alloy having, by weight, 3 to 5%, preferably 4% copper, the remainder aluminum (neglecting incidental impurities), the diameter of the wires being between about 0.01 to 0.06 mm, preferably about 0.02 to 0.05 mm, connected to the frame and the semiconductor, respectively, by ultrasonic bonding.
Inventors
- 👤 Albrecht Bischoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:49
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/12; H; H01; H01B; H01B1/00; H01B1/02; H01B1/023; H10; H10W; H10W72/00; H10W72/071; H10W72/075; H10W72/07531; H10W72/07532; H10W72/07533; H10W72/07551; H10W72/50; H10W72/551; H10W72/552; H10W72/5524; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431; Y10T428/12438; Y10T428/12493; Y10T428/12528
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
A semiconductor unit comprising a semiconductor chip (11); a connecting frame (15, 15'); and means connecting selected zones of the semiconductor chip to the frame comprising, in accordance with the invention, connecting lead wires consisting of a homogeneous aluminum-copper alloy, having a thickness of between about 0.01 mm to 0.06 mm, and in which the aluminum alloy consists essentially of 3 to 5% copper, the balance aluminum, by weight.
Claim 2
Dependent Claim
69 words
A semiconductor unit comprising a semiconductor chip (11); a connecting frame (15, 15'); and means connecting selected zones of the semiconductor chip to the frame comprising, in accordance with the invention, connecting lead wires consisting of a homogeneous aluminum-copper alloy, having a thickness of between about 0.01 mm to 0.06 mm, and in which the aluminum alloy consists essentially of 3 to 5% copper, the balance aluminum, by weight.
Claim 3
Dependent Claim
19 words
Semiconductor unit according to claim 1, wherein the wire consists essentially of 4% copper, the remainder aluminum, by weight.
Claim 4
Dependent Claim
20 words
Semiconductor unit according to claim 1 or 2, wherein the wire has a diameter between about 0.02 to 0.05 mm.
Claim 5
Dependent Claim
31 words
Semiconductor unit according to claim 1 or 2, wherein the connection (13, 14; 13', 14') between the connecting wire and the semiconductor, and the frame member, respectively, comprises an ultrasound bond.
Claim 6
Dependent Claim
17 words
Semiconductor according to claim 4, wherein the wire has a diameter between about 0.02 to 0.05 mm.
Claim 7
Dependent Claim
41 words
A connecting wire, particularly for connection of semiconductor elements to semiconductor frame terminal members and consisting of a homogeneous aluminum alloy which, essentially, has 3 to 5% copper, the remainder aluminum, and has a diameter of between 0.01 to 0.06 mm.
Claim 8
Dependent Claim
41 words
A connecting wire, particularly for connection of semiconductor elements to semiconductor frame terminal members and consisting of a homogeneous aluminum alloy which, essentially, has 3 to 5% copper, the remainder aluminum, and has a diameter of between 0.01 to 0.06 mm.
Claim 9
Dependent Claim
18 words
Wire according to claim 6, wherein the wire consists essentially of 4% copper, the remainder aluminum, by weight.
Claim 10
Dependent Claim
19 words
Wire according to claim 6 or 7, wherein the wire has a diameter of between 0.02 to 0.05 mm.
References Cited (Backward Citations)
GB286264A
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GB313891A
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GB546993A
Cited
GB836754A
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US3274667A
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US3743894A
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US4027236A
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US4355082A
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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) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |