US4493143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making a semiconductor device by using capillary action to transport solder between different layers to be soldered
Assignee: Telefunken Electronic GmbH
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Filing: 1981-10-23
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Granted: 1985-01-15
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Expires: 2001-10-23
Abstract
Abstract A semiconductor member is attached to a base by placing a wafer of solder material on the base, placing a carrier member having a through capillary hole on the solder wafer, placing the semiconductor member on the carrier member and heating the arrangement whereby the solder material melts to solder the carrier member to the base, the solder material also travelling via the capillary hole to solder the semiconductor member to the carrier member.
Inventors
- 👤 Herbert Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:39
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/20; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/132; H10W72/00; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336; H10W72/50; H10W72/531; H10W72/536; H10W72/5363; H10W72/851; H10W72/874; H10W72/884; H10W90/00; H10W90/701; H10W90/731; H10W90/734; H10W90/751; H10W90/753; H10W90/754
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
102 words
A method of producing a semiconductor arrangement comprising the steps of placing a thin solder wafer onto a casing support, placing a carrier member with a capillary opening onto said solder wafer so that said capillary opening is covered on the underside of the carrier member by said solder wafer, placing a semiconductor member on said carrier member above said capillary opening, and connecting said carrier member to said casing support and to said semiconductor member during a single soldering process wherein solder from said solder wafer rises due to said capillary opening and moistens the rear face of said semiconductor member.
Claim 2
Independent Claim
102 words
A method of producing a semiconductor arrangement comprising the steps of placing a thin solder wafer onto a casing support, placing a carrier member with a capillary opening onto said solder wafer so that said capillary opening is covered on the underside of the carrier member by said solder wafer, placing a semiconductor member on said carrier member above said capillary opening, and connecting said carrier member to said casing support and to said semiconductor member during a single soldering process wherein solder from said solder wafer rises due to said capillary opening and moistens the rear face of said semiconductor member.
Claim 3
Dependent Claim
17 words
A method as defined in claim 1 wherein the soldering process takes place at approximately 400° C.
Claim 4
Independent Claim
82 words
A method of manufacturing a semiconductor device comprising the steps of placing a solder wafer on a base member, placing a carrier member on said solder wafer, said carrier member having a through capillary hole, placing a semiconductor member on said carrier member, and applying heat so that said solder wafer melts and the melted solder material solders said carrier member to said base member and travels by means of said capillary hole to solder said semiconductor member to said carrier member.
Claim 5
Independent Claim
82 words
A method of manufacturing a semiconductor device comprising the steps of placing a solder wafer on a base member, placing a carrier member on said solder wafer, said carrier member having a through capillary hole, placing a semiconductor member on said carrier member, and applying heat so that said solder wafer melts and the melted solder material solders said carrier member to said base member and travels by means of said capillary hole to solder said semiconductor member to said carrier member.
References Cited (Backward Citations)
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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) | 1988-01-15 | 1988-07-16 | 1989-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-15 | 1992-07-16 | 1993-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-15 | 1996-07-16 | 1997-01-15 | $7700.00 | Window Closed / Lapsed |