Patent US5831444A successfully refreshed from Google Patents.
US5831444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for performing a function on an integrated circuit
Assignee: General Dynamics Information Systems Inc
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Filing: 1997-07-09
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Granted: 1998-11-03
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Expires: 2017-07-09
Abstract
Abstract A method and apparatus for performing a function on an integrated circuit having a plurality of electrical contact pads is disclosed. The apparatus includes a substrate for performing the function on the integrated circuit, the substrate having a plurality of electrical contact pads and at least one electrical test contact pad. A centering housing encompasses the integrated circuit and centers the integrated circuit with respect to the substrate such that the plurality of electrical contact pads of the integrated circuit electrically connects with the plurality of electrical contact pads of the substrate. A test connector connects integrated circuit to the substrate. The test connector includes a body, at least one electrical pin positioned on the body for interconnection with external circuitry, at least one electrical test contact pad positioned on the cover for electrical contact with the electrical test contact pad of the substrate, and a flexible membrane positioned on the body for providing a force to the integrated circuit, thereby forcing the integrated circuit in electrical connection with the test substrate.
Inventors
- 👤 Deepak K. Pai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:29
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/02; G01R1/06; G01R1/067; G01R1/073; G01R1/07307; G01R1/0735
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
199 words
An apparatus for performing an operation on an integrated circuit having a plurality of electrical contact pads, the apparatus comprising: a substrate having a plurality of electrical contact pads and at least one electrical test contact pad; a centering housing for centering the integrated circuit with respect to the substrate such that electrical contact pads on the integrated circuit electrically connect with respective pads of the plurality of electrical contact pads on the substrate; and a test connector for connecting the integrated circuit to the substrate, the test connector further comprising: a body; at least one electrical pin positioned on the body for electrical contact with external circuitry; at least one electrical test contact pad positioned on the body for electrical contact with at least one electrical test contact pad of the substrate, wherein each of the at least one electrical test contact pad is electrically connected to at least one electrical pin; a flexible membrane positioned on the body for providing a force to the integrated circuit to electrically connect the integrated circuit contact pads to the substrate contact pads; and wherein the external circuitry performs the operation on the integrated circuit via the test connector and substrate.
Claim 2
Independent Claim
199 words
An apparatus for performing an operation on an integrated circuit having a plurality of electrical contact pads, the apparatus comprising: a substrate having a plurality of electrical contact pads and at least one electrical test contact pad; a centering housing for centering the integrated circuit with respect to the substrate such that electrical contact pads on the integrated circuit electrically connect with respective pads of the plurality of electrical contact pads on the substrate; and a test connector for connecting the integrated circuit to the substrate, the test connector further comprising: a body; at least one electrical pin positioned on the body for electrical contact with external circuitry; at least one electrical test contact pad positioned on the body for electrical contact with at least one electrical test contact pad of the substrate, wherein each of the at least one electrical test contact pad is electrically connected to at least one electrical pin; a flexible membrane positioned on the body for providing a force to the integrated circuit to electrically connect the integrated circuit contact pads to the substrate contact pads; and wherein the external circuitry performs the operation on the integrated circuit via the test connector and substrate.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein the substrate further comprises: a substantially non-malleable board having a bump and circuit pattern.
Claim 4
Dependent Claim
23 words
The apparatus of claim 2 wherein the substantially non-malleable board has a thickness in the range of approximately 0.050 inches to 0.250 inches.
Claim 5
Dependent Claim
43 words
The apparatus of claim 1 wherein the substrate further comprises: an insulating film having a first conductive film layer positioned on a first surface of the insulating film and a second conductive film layer positioned on a second surface of the insulating film.
Claim 6
Dependent Claim
62 words
The apparatus of claim 4 wherein the substrate further comprises: at least one through hole protruding through the first conductive film layer, the insulating film and the second conductive film; an electrically conductive passage formed in each through hole; and a bump-like metal protrusion formed adjacent to each through hole on the first conductive film layer, thereby forming the electrical contact pads.
Claim 7
Dependent Claim
35 words
The apparatus of claim 5 wherein the bump-like metal protrusion further comprises: a copper base; a layer of nickel positioned on the copper base; and a layer of gold positioned on the layer of nickel.
Claim 8
Dependent Claim
14 words
The apparatus of claim 4 wherein the insulating film further comprises: a polyimide film.
Claim 9
Dependent Claim
22 words
The apparatus of claim 4 wherein the insulating film has a thickness in the range of approximately 0.0005 inches to 0.003 inches.
Claim 10
Dependent Claim
24 words
The apparatus of claim 4 wherein the first conductive film layer has a thickness in the range of approximately 0.0002 inches to 0.0005 inches.
Claim 11
Dependent Claim
26 words
The apparatus of claim 1 and further comprising: a valve for varying a pressure within the flexible membrane, thereby varying the force to the integrated circuit.
Claim 12
Dependent Claim
14 words
The apparatus of claim 1 wherein the flexible membrane further comprises: an elastomer film.
Claim 13
Dependent Claim
29 words
The apparatus of claim 1 wherein the external circuitry tests the integrated circuit via the test connector and substrate to ensure that the integrated circuit complies with test requirements.
Claim 14
Dependent Claim
22 words
The apparatus of claim 1 wherein the external circuitry programs the integrated circuit via the test connector and substrate with predetermined information.
Claim 15
Dependent Claim
40 words
The apparatus of claim 1 wherein the external circuitry burns in the integrated circuit via the test connector and substrate to ensure that the integrated circuit functions properly when subject to a predetermined temperature for a predetermined period of time.
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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) | 2001-11-02 | 2002-05-04 | 2002-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-02 | 2006-05-04 | 2006-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-02 | 2010-05-04 | 2010-11-03 | $7700.00 | Window Closed / Lapsed |