US5471368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Module having vertical peripheral edge connection
Assignee: International Business Machines Corp
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Filing: 1994-06-03
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Granted: 1995-11-28
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Expires: 2014-06-03
Abstract
Abstract A direct chip attach module (DCAM) 10, comprises of one or more electronic components 30, electrically bonded to a printed circuit 40, on a substrate 20. The DCAM 10, is bonded to an electronic circuit assembly by connection pads 50, formed on the edge of the DCAM substrate 10. This enables easy visual inspection of solder joints between the DCAM and the assembly. DCAM substrates 10, are initially formed in a panel form 70, and vias 50, are drilled and filled with electrically conductive media 55, at predetermined connection points. The DCAM 10, is then excised from the parent panel 70, and the cut vias provide connection pads 55, along the edge of the substrate 10.
Inventors
- 👤 Alan P. Downie
- 👤 Peter Gallagher
- 👤 John J. Garrity
- 👤 Brian L. Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:55
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/14; H05K1/141; H05K3/00; H05K3/40; H05K3/403; H05K2201/00; H05K2201/09; H05K2201/09145; H05K2201/09181; H05K3/0011; H05K3/0044; H05K3/0052; H05K3/30; H05K3/32; H05K3/34; H05K3/341; H05K3/3431; H05K3/3442; H05K3/36; H05K3/368; H05K3/42; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49144; Y10T29/49155; Y10T29/49165; Y10T29/49789
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
82 words
An electronic circuit module comprising: a substrate carrying at least one printed circuit line, at least one electronic component secured to said substrate so as to be in electrical contact with said at least one printed circuit line, and wherein said substrate has at least one electrically conductive connection pad formed along at least one edge such that said at least one electrically conductive connection pad runs vertically from the top surface of said substrate to the bottom surface of said substrate.
Claim 2
Dependent Claim
82 words
An electronic circuit module comprising: a substrate carrying at least one printed circuit line, at least one electronic component secured to said substrate so as to be in electrical contact with said at least one printed circuit line, and wherein said substrate has at least one electrically conductive connection pad formed along at least one edge such that said at least one electrically conductive connection pad runs vertically from the top surface of said substrate to the bottom surface of said substrate.
Claim 3
Dependent Claim
24 words
The electronic circuit module of claim 1, wherein the material for said electrically conductive connection pad is selected from copper or a copper alloy.
Claim 4
Dependent Claim
17 words
The electronic circuit module of claim 1, wherein said substrate is approximately 10 mm by 20 mm.
Claim 5
Dependent Claim
33 words
The electronic circuit module of claim 1, wherein at least a portion of said substrate is secured to an electronic carrier by at least one method selected from soldering, brazing or C-4 bonding.
Claim 6
Dependent Claim
45 words
The electronic circuit module of claim 1, wherein said electronic circuit module is secured to an electronic carrier such that at least a portion of said module is in electrical contact with at least a portion of a printed circuit line on said electronic carrier.
Claim 7
Dependent Claim
39 words
The electronic circuit module of claim 5, wherein said electrical contact between said printed circuit line on said electronic carrier and said module is made through said electrically conductive connection pad on at least one edge of said module.
Claim 8
Dependent Claim
21 words
The electronic circuit module of claim 1, wherein said at least one electronic component is secured to said substrate by solder.
Claim 9
Dependent Claim
170 words
An electronic circuit assembly comprising: a first substrate carrying at least one first printed circuit line, at least one first electronic component secured to said first substrate, such that said at least one first electronic component is in electrical contact with said at least one first printed circuit line, a second substrate carrying at least one second printed circuit line, at least one second electronic component secured to said second substrate, such that said at least one second electronic component is in electrical contact with said at least one second printed circuit line, and at least one electrically conductive connection pad along at least one edge of said second substrate to provide at least one electrical contact between said at least one first printed circuit line and said at least one second printed circuit line, and wherein said at least one electrically conductive connection pad runs vertically from the top surface of said second substrate to the bottom surface of said second substrate, and thereby forms said electronic circuit assembly.
Claim 10
Dependent Claim
170 words
An electronic circuit assembly comprising: a first substrate carrying at least one first printed circuit line, at least one first electronic component secured to said first substrate, such that said at least one first electronic component is in electrical contact with said at least one first printed circuit line, a second substrate carrying at least one second printed circuit line, at least one second electronic component secured to said second substrate, such that said at least one second electronic component is in electrical contact with said at least one second printed circuit line, and at least one electrically conductive connection pad along at least one edge of said second substrate to provide at least one electrical contact between said at least one first printed circuit line and said at least one second printed circuit line, and wherein said at least one electrically conductive connection pad runs vertically from the top surface of said second substrate to the bottom surface of said second substrate, and thereby forms said electronic circuit assembly.
Claim 11
Dependent Claim
36 words
The electronic circuit assembly of claim 8, wherein the material for said at least one electrically conductive connection pad along at least one edge of said second substrate is selected from copper or a copper alloy.
Claim 12
Dependent Claim
18 words
The electronic circuit assembly of claim 8, wherein said second substrate is approximately 10 mm by 20 mm.
Claim 13
Dependent Claim
34 words
The electronic circuit assembly of claim 8, wherein at least a portion of said second substrate is secured to said first substrate by at least One method selected from soldering, brazing or C-4 bonding.
Claim 14
Dependent Claim
23 words
The electronic circuit assembly of claim 8, wherein said at least one first electronic component is secured to said first substrate by solder.
Claim 15
Dependent Claim
23 words
The electronic circuit assembly of claim 8, wherein said at least one second electronic component is secured to said second substrate by solder.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |