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US5243140A
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Direct distribution repair and engineering change system
Assignee: International Business Machines Corp
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Filing: 1991-10-04
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Granted: 1993-09-07
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Expires: 2011-10-04
Abstract
Abstract A direct distribution wiring system is provided which facilitates the effecting of repair or engineering change in a Multi-chip module (MCM) while eliminating the need for redistribution and/or buried connections between IC attachment pads and engineering change pads, thus eliminating the need for patterned conductor layers corresponding to such functions. The operation of the MCM is improved by the wiring system allowing the reduction of lumped capacitances by disconnection of defective conductors, accomplished by providing severable connectors in a direct distribution structure, as well as the elimination of redistribution wiring layers and increased IC density on the MCM. Full potential fault coverage as well as full discretion in reversible engineering changes is provided by forming all elements of the wiring system on the surface of the device.
Inventors
- 👤 Harsaran S. Bhatia
- 👤 Mario J. Interrante
- 👤 Suresh D. Kadakia
- 👤 Shashi D. Malaviya
- 👤 Mark H. McLeod
- 👤 Sudipta K. Ray
- 👤 Herbert I. Stoller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:24
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/611; H10W70/01; H10W70/05; H10W70/092; H10W70/62; H10W70/641; H10W90/00; H10W90/701; H10W90/721; H10W90/724
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
86 words
A direct distribution wiring system for a substrate having at least two connection pads arranged in an array corresponding to terminals of an electronic device, said wiring system including at least two direct distribution structures on a surface of said substrate, each said direct distribution structure including one of said connection pads, a signal pad spaced from said connection pad and a connection between said connection pad and said signal pad, and a conductor extending between and spaced from said at least two direct distribution structures.
Claim 2
Dependent Claim
86 words
A direct distribution wiring system for a substrate having at least two connection pads arranged in an array corresponding to terminals of an electronic device, said wiring system including at least two direct distribution structures on a surface of said substrate, each said direct distribution structure including one of said connection pads, a signal pad spaced from said connection pad and a connection between said connection pad and said signal pad, and a conductor extending between and spaced from said at least two direct distribution structures.
Claim 3
Dependent Claim
25 words
A wiring system as recited in claim 1, further including a shunt extending from a portion of one said direct distribution structures to said conductor.
Claim 4
Dependent Claim
18 words
A wiring system as recited in claim 1, wherein said shunt is formed by a selectively deposited metallization.
Claim 5
Dependent Claim
23 words
A wiring system as recited in claim 2, further including a further connection pad attached to at least one end of said conductor.
Claim 6
Dependent Claim
20 words
A wiring system as recited in claim 1, wherein at least one of said connection and said conductor are severable.
Claim 7
Dependent Claim
22 words
A wiring system as recited in claim 1 wherein said conductor has an angle formed at a predetermined location along its length.
Claim 8
Independent Claim
88 words
A method of effecting a repair or engineering change in a substrate including a direct distribution structure on a surface of said substrate, said direct distribution structure including a connection pad for connecting a circuit element to said substrate, a terminal spaced from at least one said connection pad and a connection between said connection pad and said terminal, and a conductor extending in the proximity of and spaced from said direct distribution structure, including the step of forming a shunt between said connection pad and said conductor.
Claim 9
Independent Claim
88 words
A method of effecting a repair or engineering change in a substrate including a direct distribution structure on a surface of said substrate, said direct distribution structure including a connection pad for connecting a circuit element to said substrate, a terminal spaced from at least one said connection pad and a connection between said connection pad and said terminal, and a conductor extending in the proximity of and spaced from said direct distribution structure, including the step of forming a shunt between said connection pad and said conductor.
Claim 10
Dependent Claim
22 words
A method as recited in claim 7, including the further step of severing at least one of said conductor and said connection.
Claim 11
Dependent Claim
104 words
A direct distribution wiring system for a substrate comprising: a substrate; a plurality of direct distribution structures arrayed on a surface of said substrate in accordance with terminals of an electronic device, at least one of said direct distribution structures including a connection pad, a signal pad spaced from said connection pad, and a connection between said connection pad and said signal pad; a plurality of engineering change pads proximate to said direct distribution structures; and at least one conductor extending between and spaced from at least two of said direct distribution structures and connected to at least one of said engineering change pads.
Claim 12
Dependent Claim
104 words
A direct distribution wiring system for a substrate comprising: a substrate; a plurality of direct distribution structures arrayed on a surface of said substrate in accordance with terminals of an electronic device, at least one of said direct distribution structures including a connection pad, a signal pad spaced from said connection pad, and a connection between said connection pad and said signal pad; a plurality of engineering change pads proximate to said direct distribution structures; and at least one conductor extending between and spaced from at least two of said direct distribution structures and connected to at least one of said engineering change pads.
Claim 13
Dependent Claim
20 words
A direct distribution wiring system as recited in claim 1 wherein said engineering change pads surround said direct distribution structures.
Claim 14
Dependent Claim
27 words
A direct distribution wiring system as recited in claim 9, further including a shunt extending from a portion of one said direct distribution structures to said conductor.
Claim 15
Dependent Claim
20 words
A wiring system as recited in claim 9, wherein at least one of said connection and said conductor are severable.
Claim 16
Dependent Claim
22 words
A wiring system as recited in claim 9 wherein said conductor has an angle formed at a predetermined location along its length.
References Cited (Backward Citations)
US4254445A
Cited
US4413309A
Cited
US4453176A
Cited
US4489364A
Cited
US4549200A
Cited
US4546413A
Cited
US4840924A
Cited
US4706165A
Cited
US4652974A
Cited
US4746815A
Cited
US4880959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-06 | 1997-03-08 | 1997-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-06 | 2001-03-08 | 2001-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-06 | 2005-03-08 | 2005-09-07 | $7700.00 | Window Closed / Lapsed |