US4921160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Personal data card and method of constructing the same
Assignee: AT&T Inc
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Filing: 1988-02-29
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Granted: 1990-05-01
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Expires: 2008-02-29
Abstract
Abstract A personal data card (10), comprised of a semiconductor chip (28), sealed by encapsulant (38) in an opening (26) in a body (12), is advantageously provided with a shock absorbing device (38) which substantially circumscribes the encapsulant to substantially isolate the encapsulant from the body of the card. By isolating the encapsulant from the card body, the shock absorbing device reduces the stresses transmitted from the card body into the capsulant and into the chip when the card is flexed. In this way the incidence of cracking of the chip caused by the stresses generated upon flexing of the card is reduced.
Inventors
- 👤 Richard M. Flynn
- 👤 Fred W. Verdi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:15
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/077; G06K19/0772; G06K19/07728; G06K19/07745; H; H10; H10W; H10W72/00; H10W72/851; H10W72/874; H10W72/884; H10W90/00; H10W90/701; H10W90/731; H10W90/734; H10W90/751; H10W90/754
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
108 words
A personal data card comprising: a body having an opening; at least one semiconductor chip received within said opening; a mass of encapsulant admitted into the opening in said body to seal the chip therein; and a cover overlying the substrate to seal the opening therein, characterized in that: the body opening has a bottom wall to which the chip is bonded; and shock absorbing means are provided to substantially circumscribe both the encapsulant and the semiconductor chip sealed therein and thereby substantially isolate the encapsulant and the chip from the body to reduce the stresses transmitted from the body into the encapsulant upon flexing of the substrate.
Claim 2
Dependent Claim
108 words
A personal data card comprising: a body having an opening; at least one semiconductor chip received within said opening; a mass of encapsulant admitted into the opening in said body to seal the chip therein; and a cover overlying the substrate to seal the opening therein, characterized in that: the body opening has a bottom wall to which the chip is bonded; and shock absorbing means are provided to substantially circumscribe both the encapsulant and the semiconductor chip sealed therein and thereby substantially isolate the encapsulant and the chip from the body to reduce the stresses transmitted from the body into the encapsulant upon flexing of the substrate.
Claim 3
Dependent Claim
28 words
The card according to claim 1, characterized in that the shock absorbing means comprises an elastomeric ring located along the inside periphery of the opening in the body.
Claim 4
Dependent Claim
34 words
The card according to claim 1, characterized in that the shock absorbing means comprises a plurality of elastomeric ring segments embedded within the body proximate the opening therein to substantially circumscribe the periphery thereof.
Claim 5
Dependent Claim
18 words
The card according to claim 2, characterized in that said elastomeric ring is fabricated from a latex rubber.
Claim 6
Dependent Claim
17 words
The card according to claim 2, characterized in that said elastomeric ring is fabricated from silicone rubber.
Claim 7
Dependent Claim
18 words
The card according to claim 3, characterized in that said elastomeric ring is fabricated from a latex rubber.
Claim 8
Dependent Claim
17 words
The card according to claim 3, characterized in that said elastomeric ring is fabricated from silicone rubber.
Claim 9
Independent Claim
117 words
A method for making a personal data card comprising the steps of: placing at least one semiconductor chip into at least one opening in a body; admitting encapsulant into the opening in the body to seal the chip; and bonding a cover to said substrate to overly the opening therein, characterized in that: the chip has one of its surfaces bonded to the body; and shock-absorbing means are placed in the body prior to the admission of the encapsulant so as to substantially circumscribe the encapsulant and chip and thereby substantially isolate both the encapsulant and the chip from the body to reduce the stresses transmitted from the body into the encapsulant upon flexing of the body.
Claim 10
Independent Claim
117 words
A method for making a personal data card comprising the steps of: placing at least one semiconductor chip into at least one opening in a body; admitting encapsulant into the opening in the body to seal the chip; and bonding a cover to said substrate to overly the opening therein, characterized in that: the chip has one of its surfaces bonded to the body; and shock-absorbing means are placed in the body prior to the admission of the encapsulant so as to substantially circumscribe the encapsulant and chip and thereby substantially isolate both the encapsulant and the chip from the body to reduce the stresses transmitted from the body into the encapsulant upon flexing of the body.
Claim 11
Dependent Claim
24 words
The method according to claim 8, characterized in that the shock-absorbing means are placed into the opening in the body to fit snugly therein.
Claim 12
Dependent Claim
28 words
The method according to claim 8, characterized in that the shock-absorbing means is embedded into the body in proximity to the opening to substantially circumscribe the periphery thereof.
Claim 13
Dependent Claim
47 words
The method according to claim 8, characterized in that said shock-absorbing device is placed within said body by directly extruding a viscous liquid elastomer precursor into said opening and then curing said elastomer to yield a resilient ring-like structure running along the inside wall of said opening.
References Cited (Backward Citations)
US3637994A
Cited
US4222516A
Cited
US4417413A
Cited
US4603249A
Cited
JPS58210646A
Cited
US4649418A
Cited
US4746392A
Cited
US4843225A
Cited
US4692604A
Cited
JPS61145696A
Cited
US4737620A
Cited
FR2595848A1
Cited
US4764803A
Cited
US4849617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |