US3821847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing a pattern of conductors on an insulating flexible foil of a synthetic material
Assignee: US Philips Corp
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Filing: 1972-01-26
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Granted: 1974-07-02
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Expires: 1992-01-26
Abstract
Abstract Patterns of conductors which are destined as current supply members of a semiconductor body, for example, an integrated circuit, are provided on an insulating flexible foil of a synthetic material resin. Each pattern of conductors consists of two groups of conductors. In order to be able to provide the conductors in series production by electrodeposition, a large number of rows of conductor tracks is provided on the foil, the outer ends of the conductor tracks of corresponding groups in a row being connected to a continuous metal track. A connection track between the metal tracks is provided between at least a number of successive patterns of conductors in a row. The tracks are then covered by means of an electrodeposition process by at least one metal layer of the desirable thickness.
Inventors
- 👤 J Melse
- 👤 M Groenewegen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:34
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/182; H05K3/185; H10; H10W; H10W70/00; H10W70/40; H10W70/453; H05K3/22; H05K3/24; H05K3/241; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/931; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121; Y10T29/49124; Y10T29/49155
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A method for continuously electroplating conductive lead patterns on a continuous sheet of insulating material comprising the steps of: depositing on said sheet a plurality of spaced conductive longitudinal strips; depositing on said sheet a plurality of spaced conductive connecting strips electrically connecting adjacent longitudinal strips; depositing on said sheet between said longitudinal and connecting strips electroplatable conductive lead patterns having spaced lead elements extending to and electrically connecting with a conductive strip; continuously conveying said sheet longitudinally through an electroplating bath such that a continuously changing portion of said sheet is within said electroplating bath; and continuously applying a constant electrical potential to at least one but not necessarily continuously the same longitudinal strip at a position on said longitudinal strips about to enter said electroplating bath.
Claim 2
Independent Claim
128 words
A method for continuously electroplating conductive lead patterns on a continuous sheet of insulating material comprising the steps of: depositing on said sheet a plurality of spaced conductive longitudinal strips; depositing on said sheet a plurality of spaced conductive connecting strips electrically connecting adjacent longitudinal strips; depositing on said sheet between said longitudinal and connecting strips electroplatable conductive lead patterns having spaced lead elements extending to and electrically connecting with a conductive strip; continuously conveying said sheet longitudinally through an electroplating bath such that a continuously changing portion of said sheet is within said electroplating bath; and continuously applying a constant electrical potential to at least one but not necessarily continuously the same longitudinal strip at a position on said longitudinal strips about to enter said electroplating bath.
Claim 3
Dependent Claim
44 words
The method of claim 1 wherein said step of applying an electrical potential comprises the step of continuously conveying said sheet longitudinally past at least one roller held at an electrical potential, said at least one roller electrically contacting at least one longitudinal strip.
Claim 4
Dependent Claim
49 words
The method of claim 2 wherein said sheet is continuously conveyed past more than one roller held at the same electrical potential and at least one but not necessarily continuously the same roller makes continuous electrical contact with at least one but not necessarily continuously the same longitudinal strip.
Claim 5
Dependent Claim
22 words
The method of claim 1 wherein said longitudinal and connecting strips are deposited by photo defining electroplatable conductive longitudinal and connecting strips.
Claim 6
Dependent Claim
32 words
The method of claim 1 wherein said spaced longitudinal strips and said spaced connecting strips are deposited to define a grid having enclosed areas in which individual lead patterns are photo defined.
References Cited (Backward Citations)
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US3099608A
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US3481840A
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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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |