US5007872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screened interconnect system
Assignee: Microsemi Corp Power Management Group
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Filing: 1989-06-12
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Granted: 1991-04-16
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Expires: 2009-06-12
Abstract
Abstract An interconnect system which is used to provide an electrical connection between contact pads on the facing surfaces of adjacent electrical support media such as the face plate and the substrate of an electronic circuit device such as gas discharge displays. The interconnect system uses a conductive glass material which is selectively screened onto and fired with the display device.
Inventors
- 👤 Sang T. Tang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:27
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/22; H01R13/24; H01R13/2407; H01R13/2414; H01J; H01J17/00; H01J17/02; H01J17/18; H01J29/00; H01J29/92; H01J5/00; H01J5/46; H01R4/00; H01R4/04; H01J2217/00; H01J2217/38; H01J2217/49; H01J2329/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
146 words
An interconnect system for electrically interconnecting electrical conductors on parallel plates comprising, first and second planar plates of substantially electrically non-conducting material, a plurality of closely spaced conductor paths on a surface of each of said first and second planar plates, said conductor paths are on the order of 0.5 mm wide with spacing on the order of 0.5 mm therebetween, said first and second planar plates arranged in parallel, spaced apart relation with the plurality of conductor paths on said first planar plate in alignment with the plurality of conductor paths on said second planar plate, and independent and unsupported interconnections formed of a conductive material having substantially the same thermal coefficiently of thermal expansion as said first and second planar plates and joined to the aligned conductor paths on said first and second planar plates in order to electrically interconnect said aligned conductor paths.
Claim 2
Dependent Claim
146 words
An interconnect system for electrically interconnecting electrical conductors on parallel plates comprising, first and second planar plates of substantially electrically non-conducting material, a plurality of closely spaced conductor paths on a surface of each of said first and second planar plates, said conductor paths are on the order of 0.5 mm wide with spacing on the order of 0.5 mm therebetween, said first and second planar plates arranged in parallel, spaced apart relation with the plurality of conductor paths on said first planar plate in alignment with the plurality of conductor paths on said second planar plate, and independent and unsupported interconnections formed of a conductive material having substantially the same thermal coefficiently of thermal expansion as said first and second planar plates and joined to the aligned conductor paths on said first and second planar plates in order to electrically interconnect said aligned conductor paths.
Claim 3
Dependent Claim
17 words
The system recited in claim 1 wherein, said first and second planar plates are made of glass.
Claim 4
Dependent Claim
20 words
The system recited in claim 1 wherein, said conductor paths are formed of a thin layer of electrically conducting material.
Claim 5
Dependent Claim
32 words
The system recited in claim 2 including, a glass frit seal formed between said first and second planar plates so as to create a chamber between said first and second planar plates.
Claim 6
Dependent Claim
14 words
The system recited in claim 4 including, an activatable material captured within said chamber.
Claim 7
Dependent Claim
27 words
The system recited in claim 5 wherein, said activatable material undergoes a change in a visual characteristic in response to the application of an electric field thereto.
Claim 8
Dependent Claim
57 words
The system recited in claim 6 including, excitation conductor pads on the surfaces of each of said first and second planar plates, said excitation conductor pads arranged in alignment with each other thereby to selectively apply an electric field to said activatable material in response to the application of an electrical signal to said excitation conductor pads.
Claim 9
Dependent Claim
21 words
The system recited in claim 7 wherein, at least some of said excitation conductor pads are connected to said conductor paths.
Claim 10
Dependent Claim
24 words
The system recited in claim 6 wherein, said first and second planar plates, together with said activatable material, form a gas discharge display device.
Claim 11
Dependent Claim
25 words
The system recited in claim 4 wherein, said interconnections are disposed at the edges of said first and second planar plates and outside said chamber.
Claim 12
Dependent Claim
66 words
An interconnect system between high density conductive paths on a pair of relatively widely spaced apart glass substrates in a display device comprising, a plurality of independent, unsupported, and highly electrically conductive, pillars of devitrified and fired solder glass interposed between respective conductive paths on surfaces of both of said pair of glass substrates wherein said glass substrates are spaced apart by at least 0.3 mm.
Claim 13
Dependent Claim
66 words
An interconnect system between high density conductive paths on a pair of relatively widely spaced apart glass substrates in a display device comprising, a plurality of independent, unsupported, and highly electrically conductive, pillars of devitrified and fired solder glass interposed between respective conductive paths on surfaces of both of said pair of glass substrates wherein said glass substrates are spaced apart by at least 0.3 mm.
Claim 14
Independent Claim
107 words
A method of forming a high density electrical interconnection arrangement between a pair of parallel, planar glass plates having a plurality of closely spaced conductor paths on each of the adjacent surfaces of said plates comprising, screening a layer of conductive glass onto each conductor path which is to be interconnected on at least one of said pair of parallel planar plates, said screening step comprises a thick film process, drying said layer of conductive glass in a preglaze operation, placing said pair of plates in parallel relationship with the conductor paths of both plates aligned with each other, and firing said conductive glass to devitrify same.
Claim 15
Independent Claim
107 words
A method of forming a high density electrical interconnection arrangement between a pair of parallel, planar glass plates having a plurality of closely spaced conductor paths on each of the adjacent surfaces of said plates comprising, screening a layer of conductive glass onto each conductor path which is to be interconnected on at least one of said pair of parallel planar plates, said screening step comprises a thick film process, drying said layer of conductive glass in a preglaze operation, placing said pair of plates in parallel relationship with the conductor paths of both plates aligned with each other, and firing said conductive glass to devitrify same.
Claim 16
Dependent Claim
28 words
The method recited in claim 12 including, screening a layer of conductive glass on to the aligned conductor paths of both of said pair of parallel planar plates.
Claim 17
Dependent Claim
34 words
The system recited in claim 1 wherein, said conductive material comprises solder glass which includes components from the group including lead oxide, silica, zinc oxide, boron oxide, barium oxide, zirconium oxide, silver and palladium.
Claim 18
Dependent Claim
37 words
The method recited in claim 12 including, screening a glass frit layer onto at least one of said pair of parallel plates to form a pattern which excludes said layer of conductive glass on said conductor paths.
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) | 1994-04-15 | 1994-10-15 | 1995-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-15 | 1998-10-15 | 1999-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-15 | 2002-10-15 | 2003-04-16 | $7700.00 | Window Closed / Lapsed |