US5917705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chip card
Assignee: Infineon Technologies AG
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Filing: 1996-10-28
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Granted: 1999-06-29
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Expires: 2016-10-28
Abstract
Abstract A chip card includes a plastic card. A plastic body is disposed in the plastic card and a semiconductor chip is surrounded by the plastic body. Contact strips are electrically connected with the semiconductor chip and are connected to the plastic card. The contact strips have a flexible region near and outside of the plastic body and are advantageously parts of a lead frame. An adhesive which joins the contact strips to the plastic card has at least three layers including a middle layer of flexible material.
Inventors
- 👤 Josef Kirschbauer
- 👤 Erich Hopf
- 👤 Gunther Gronninger
- 👤 Jurgen Fischer
- 👤 Gunter Didschies
- 👤 Josef Mundigl
- 👤 Michael Rogalli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:44
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/077; G06K19/0772; G06K19/07728; G06K19/07743
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
A chip card, comprising: a plastic card; a plastic body disposed in said plastic card; a semiconductor chip surrounded by said plastic body; a metallic lead frame having metallic contact strips electrically connected with said semiconductor chip and connected to said plastic card, said contact strips having a contact region and a metallic flexible region, said metallic flexible region disposed between said contact region and said plastic body and absorbing tensile strains to improve the bending load capacity of the chip card; and an adhesive joining said contact strips to said plastic card, said adhesive having at least three layers including a middle layer of flexible material, said metallic flexible region and said adhesive being spaced apart from each other.
Claim 2
Dependent Claim
120 words
A chip card, comprising: a plastic card; a plastic body disposed in said plastic card; a semiconductor chip surrounded by said plastic body; a metallic lead frame having metallic contact strips electrically connected with said semiconductor chip and connected to said plastic card, said contact strips having a contact region and a metallic flexible region, said metallic flexible region disposed between said contact region and said plastic body and absorbing tensile strains to improve the bending load capacity of the chip card; and an adhesive joining said contact strips to said plastic card, said adhesive having at least three layers including a middle layer of flexible material, said metallic flexible region and said adhesive being spaced apart from each other.
Claim 3
Dependent Claim
16 words
The chip card according to claim 1, wherein said metallic flexible region includes an expansion bead.
Claim 4
Dependent Claim
21 words
The chip card according to claim 1, wherein said metallic flexible region includes at least one thin web of expandable material.
Claim 5
Dependent Claim
17 words
The chip card according to claim 1, wherein said metallic flexible region includes a meandering thin web.
Claim 6
Dependent Claim
16 words
The chip card according to claim 1, wherein said adhesive includes peripheral layers of hot-melt adhesives.
Claim 7
Dependent Claim
19 words
The chip card according to claim 1, wherein said plastic body has no direct contact with said plastic card.
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) | 2002-06-28 | 2002-12-28 | 2003-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-06-28 | 2006-12-28 | 2007-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-06-28 | 2010-12-28 | 2011-06-29 | $7700.00 | Window Closed / Lapsed |