US4731503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connector with a flexible circuit support
Assignee: Sharp Corp
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Filing: 1986-03-28
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Granted: 1988-03-15
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Expires: 2006-03-28
Abstract
Abstract An electrically conducting hot melt adhesive is located at limited contact regions of a flexible circuit support, which typically carries a large scale integrated circuit (LSI) chip. A non-conducting hot melt adhesive is disposed between the limited contact regions at the non-contact regions. The resulting electrical connector can then be brought into contact with the corresponding areas of flexible or rigid circuit supports and through the application of heat and pressure, fuse the respective members so as to establish circuit paths between their limited contact regions via the electrically conducting hot melt adhesive. Heat and pressure are applied to the conducting hot melt adhesive in the same way as for an electrically non-conducting hot melt adhesive after contacting limited contact regions of another flexible circuit support or a rigid circuit support with the molten adhesive. Subsequently, the molten adhesive is left to cool so as to solidify. This results in establishing circuit paths between both the limited contact regions adhesively via the electrically conducting hot melt adhesive.
Inventors
- 👤 Yoshitomo Kitanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:13
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/13452; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/321; H05K3/36; H05K3/361; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0129; H05K2201/10; H05K2201/10613; H05K2201/10954; H05K2201/10977; H05K3/303; H05K3/305
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
An electrical connector configuration comprising: a pair of circuit supports each having a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions; an electrically conducting hot melt adhesive having electrically conductive particles dispersed therein interposed and solidified between said electrical contact regions of the supports, resulting in establishing circuit paths between said contact regions; and an electrically nonconducting hot melt adhesive free of electrically conductive particles interposed and solidified between said non-electrical contact regions of the supports for ensuring the strength of said adhesively established circuit paths.
Claim 2
Dependent Claim
92 words
An electrical connector configuration comprising: a pair of circuit supports each having a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions; an electrically conducting hot melt adhesive having electrically conductive particles dispersed therein interposed and solidified between said electrical contact regions of the supports, resulting in establishing circuit paths between said contact regions; and an electrically nonconducting hot melt adhesive free of electrically conductive particles interposed and solidified between said non-electrical contact regions of the supports for ensuring the strength of said adhesively established circuit paths.
Claim 3
Dependent Claim
118 words
An electrical connector configuration comprising: a flexible circuit support having a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions; a rigid circuit support having a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions; an electrically conducting hot melt adhesive having electrically conductive particles dispersed therein interposed and solidified between said electrical contact regions of said flexible circuit support and said rigid circuit support for establishing circuit paths between both said contact regions through said hot melt adhesive; and an electrically non-conductive hot melt adhesive free of electrically conductive particles interposed and solidified between said non-electrical contact regions of said flexible circuit and said rigid circuit support.
Claim 4
Dependent Claim
118 words
An electrical connector configuration comprising: a flexible circuit support having a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions; a rigid circuit support having a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions; an electrically conducting hot melt adhesive having electrically conductive particles dispersed therein interposed and solidified between said electrical contact regions of said flexible circuit support and said rigid circuit support for establishing circuit paths between both said contact regions through said hot melt adhesive; and an electrically non-conductive hot melt adhesive free of electrically conductive particles interposed and solidified between said non-electrical contact regions of said flexible circuit and said rigid circuit support.
Claim 5
Dependent Claim
66 words
An electrical connector consisting of a flexible circuit support having alternately a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions, said limited electrical contact regions being coated with an electrically conducting hot melt adhesive having electrically conductive particles dispersed therein and said limited non-electrical contact regions being coated with a non-electrically conducting hot melt adhesive free of electrically conductive particles.
Claim 6
Dependent Claim
66 words
An electrical connector consisting of a flexible circuit support having alternately a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions, said limited electrical contact regions being coated with an electrically conducting hot melt adhesive having electrically conductive particles dispersed therein and said limited non-electrical contact regions being coated with a non-electrically conducting hot melt adhesive free of electrically conductive particles.
Claim 7
Dependent Claim
84 words
An electrical connector configuration consisting of a flexible circuit support having alternately a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions, said limited electrical contact regions being coated with an electrically conducting hot melt adhesive having electrically conductive particles dispersed therein and said limited non-electrical contact regions being coated with a non-electrically conducting hot melt adhesive free of electrically conductive particles, and a large scale integrated circuit chip mounted on and electrically connected to said flexible circuit support.
Claim 8
Dependent Claim
84 words
An electrical connector configuration consisting of a flexible circuit support having alternately a plurality of limited electrical contact regions and a plurality of limited non-electrical contact regions, said limited electrical contact regions being coated with an electrically conducting hot melt adhesive having electrically conductive particles dispersed therein and said limited non-electrical contact regions being coated with a non-electrically conducting hot melt adhesive free of electrically conductive particles, and a large scale integrated circuit chip mounted on and electrically connected to said flexible circuit support.
References Cited (Backward Citations)
US4113981A
Cited
US4157932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-15 | 1991-09-14 | 1992-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-15 | 1995-09-14 | 1996-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-15 | 1999-09-14 | 2000-03-15 | $7700.00 | Window Closed / Lapsed |