US4584039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fine line flexible cable fabrication process
Assignee: Raytheon Co
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Filing: 1984-12-26
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Granted: 1986-04-22
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Expires: 2004-12-26
Abstract
Abstract A method for fabricating supported fine line electrical conductors comprises the steps of forming a pattern (16) which defines a configuration (18) of the desired conductors on a surface (12), placing electrically conductive material on the surface in a configuration defined by the pattern to form electrical conductors (20), removing only the pattern from the surface and thus leaving the configured electrical conductors thereon, adhering a support (22) to the electrical conductors with an adherence which is greater than that existing between the conductors and the surface, and separating the assembled conductors and support from the surface. One of the surface and of the support and assembled conductors is flexible and the other is relatively rigid, so that the flexible one can be peeled away from the rigid other.
Inventors
- 👤 Paul Y. Shea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:46
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/20; H05K3/205; H05K1/00; H05K1/02; H05K1/03; H05K1/0393; H05K2203/00; H05K2203/01; H05K2203/0147; H05K2203/0152; H05K2203/0156; H05K2203/07; H05K2203/0703; H05K2203/0726; H05K3/38; H05K3/386; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
148 words
A method for fabricating fine line electrical conductors on a support comprising the steps of: utilizing a surface as a fabrication aid; selecting one of the surface and the support from a rigid material and the other from a material which is relatively flexible with respect to the rigid material; forming a pattern, which defines a configuration of the conductors, on the surface; placing electrically conductive material on the surface in a configuration defined by the pattern configuration to form the electrical conductors; removing only the pattern from the surface and thus leaving the configured electrical conductors thereon; adhering the support to the electrical conductors with an adherence greater than that which is between the conductors and the surface; and separating the asembled conductors and support from the surface by peeling the flexible one of the surface and of the assembled conductors and support from the other thereof.
Claim 2
Independent Claim
148 words
A method for fabricating fine line electrical conductors on a support comprising the steps of: utilizing a surface as a fabrication aid; selecting one of the surface and the support from a rigid material and the other from a material which is relatively flexible with respect to the rigid material; forming a pattern, which defines a configuration of the conductors, on the surface; placing electrically conductive material on the surface in a configuration defined by the pattern configuration to form the electrical conductors; removing only the pattern from the surface and thus leaving the configured electrical conductors thereon; adhering the support to the electrical conductors with an adherence greater than that which is between the conductors and the surface; and separating the asembled conductors and support from the surface by peeling the flexible one of the surface and of the assembled conductors and support from the other thereof.
Claim 3
Dependent Claim
33 words
A method according to claim 1 in which the surface is electrically conductive and said electrically conductive material placing step comprises the step of electroplating the conductive material onto the electrically conductive surface.
Claim 4
Dependent Claim
20 words
A method according to claim 2 further comprising the steps of forming the surface by utlizing a stainless steel plate.
Claim 5
Dependent Claim
19 words
A method according to claim 3 in which the stainless steel plate comprises a polished 300 series stainless steel.
Claim 6
Dependent Claim
19 words
A method according to claim 3 in which the surface on the stainless steel comprises copper, nickel or silver.
Claim 7
Dependent Claim
41 words
A method according to claim 2 in which said adhering step comprises the step of applying heat and pressure to a laminate of an adhesive layer interposed between the support and the electroplated conductive material as configured as the electrical conductors.
Claim 8
Dependent Claim
17 words
A method according to claim 6 in which said heat applying step is at about 250° F.
Claim 9
Dependent Claim
20 words
A method according to claim 7 in which said pressure applying step is typically from 100 psi to 250 psi.
Claim 10
Dependent Claim
25 words
A method according to claim 8 in which the dielectric material comprises a polyimide and the adhesive layer comprises a methyl methacrylate crosslinked with phenol.
Claim 11
Dependent Claim
33 words
A method according to claim 1 in which said adhering step comprises the step of applying heat and pressure to a laminate of an adhesive interposed between the support and the electrical conductors.
Claim 12
Dependent Claim
17 words
A method according to claim 10 in which said heat applying step is at about 250° F.
Claim 13
Dependent Claim
20 words
A method according to claim 11 in which said pressure applying step is typically from 100 psi to 250 psi.
Claim 14
Dependent Claim
25 words
A method according to claim 1 further comprising the step of forming the surface by placing a conductive film on a base of dielectric material.
Claim 15
Dependent Claim
28 words
A method according to claim 13 in which the dielectric material is pliable, and further comprising the step of adhering the pliable dielectric material to a rigid backing.
Claim 16
Dependent Claim
35 words
A method according to claim 14 in which said conductive film placing step comprises the steps of electrolessly depositing a thin conductive layer on the dielectric material and a conductor base on the conductive layer.
Claim 17
Dependent Claim
43 words
A method according to claim 15 further comprising the step of etching the conductor base from the electrically conductive material following said electrically conductive material placing step and said pattern removing step to electrically isolate the configured electrical conductors on the dielectric material.
References Cited (Backward Citations)
US2666008A
Cited
US4306925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |