Patent US5085084A successfully refreshed from Google Patents.
US5085084A
Expired / Lapsed
US
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Method and apparatus for testing lead bonds and detecting failure
Assignee: Intersil Corp
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Filing: 1990-11-19
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Granted: 1992-02-04
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Expires: 2010-11-19
Abstract
Abstract A method includes applying a fluid force to a lead and determining if a lead separates at its bond in response to fluid force. The fluid can be applied to all the leads simultaneously or to given groups of leads. The determination of how many and which leads are separated is produced by positioning a sensor adjacent the leads and an indicator.
Inventors
- 👤 Matthew M. Salatino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:33
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/04; G01L; G01L5/00; G01L5/0028; G01L5/0038; G01N2203/00; G01N2203/003; G01N2203/0042; H; H10; H10P; H10P74/00; H10P74/20; H10P74/203; H10W; H10W72/00; H10W72/071; H10W72/075; H10W72/07531; H10W72/50; H10W72/531; H10W72/536; H10W72/5363
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
53 words
A method of testing bonding of a plurality of leads connecting a device to a frame comprising: applying a fluid force directly to a bonding surface of a group of said leads greater than one simultaneously; and determining if any of said leads separates at their bonds in response to said fluid force.
Claim 2
Independent Claim
53 words
A method of testing bonding of a plurality of leads connecting a device to a frame comprising: applying a fluid force directly to a bonding surface of a group of said leads greater than one simultaneously; and determining if any of said leads separates at their bonds in response to said fluid force.
Claim 3
Dependent Claim
17 words
A method according to claim 1 wherein said fluid is applied simultaneously to all of said leads.
Claim 4
Dependent Claim
21 words
A method according to claim 1 wherein determining determines which leads separate at their bonds in response to said fluid force.
Claim 5
Dependent Claim
22 words
A method according to claim 1 wherein determining determines how many leads separate at their bonds in response to said fluid force.
Claim 6
Dependent Claim
45 words
A method according to claim 1 wherein said device includes a plurality of groups of leads, each group extending from a different edge of said device; and said fluid is applied simultaneously to all leads of a group of leads, one group at a time.
Claim 7
Dependent Claim
25 words
A method according to claim 1 wherein said determining step includes positioning a sensor adjacent said leads, and indicating if a lead contacts said sensor.
Claim 8
Dependent Claim
30 words
A method according to claim 6 wherein said sensor includes a conductor connected in a circuit to an indicator and whose circuit is closed by a lead contacting said conductor.
Claim 9
Dependent Claim
31 words
A method according to claim 1 wherein said fluid is supplied at increasing pressure until a lead separates at its bond, the pressure at which said lead separates indicates bond strength.
Claim 10
Dependent Claim
26 words
A method according to claim 1 wherein said fluid is supplied at a pressure sufficient to separate unacceptably bonded leads while not separating acceptably bonded leads.
Claim 11
Dependent Claim
56 words
A tester of bonding of a plurality of leads connecting a device to frame comprising: fluid means for applying fluid force directly to a bonding surface of a group of said leads greater than one simultaneously; and determining means for determining if any of said leads separates at their bonds in response to said fluid force.
Claim 12
Dependent Claim
56 words
A tester of bonding of a plurality of leads connecting a device to frame comprising: fluid means for applying fluid force directly to a bonding surface of a group of said leads greater than one simultaneously; and determining means for determining if any of said leads separates at their bonds in response to said fluid force.
Claim 13
Dependent Claim
18 words
A tester according to claim 10 wherein said fluid means applies fluid simultaneously to all of said leads.
Claim 14
Dependent Claim
23 words
A tester according to claim 10 wherein said determining means determines which leads separate at their bonds in response to said fluid force.
Claim 15
Dependent Claim
24 words
A tester according to claim 10 wherein said determining means determines how many leads separate at their bonds in response to said fluid force.
Claim 16
Dependent Claim
46 words
A tester according to claim 10 wherein said device includes a plurality of groups of leads, each group extending from a different edge of said device; and said fluid means applies fluid simultaneously to all leads of a group of leads, one group at a time.
Claim 17
Dependent Claim
35 words
A tester according to claim 10 wherein said determining means includes a sensor means positioned adjacent said leads, and indicator means connected to said sensor means for indicating if a lead contacts said sensor means.
Claim 18
Dependent Claim
32 words
A tester according to claim 15 wherein said sensor means includes a conductor connected in a circuit to said indicator means and whose circuit is closed by a lead contacting said conductor.
Claim 19
Dependent Claim
33 words
A tester according to claim 10 wherein said fluid means supplies said fluid at increasing pressure until a lead separates at its bond, the pressure at which said lead separates indicates bond strength.
Claim 20
Dependent Claim
28 words
A tester according to claim 10 wherein said fluid means supplies said pressure at a pressure sufficient to separate unacceptably bonded leads while not separating acceptable bonded leads.
Claim 21
Independent Claim
61 words
A method of detecting failure of the bonding of leads connecting a device to a frame comprising: positioning a sensor adjacent said leads so as to be contacted by a failed lead; applying a force to a lead independent of said sensor; and indicating if a lead separates at its bonds in response to said force and subsequently contacts said sensor.
Claim 22
Independent Claim
61 words
A method of detecting failure of the bonding of leads connecting a device to a frame comprising: positioning a sensor adjacent said leads so as to be contacted by a failed lead; applying a force to a lead independent of said sensor; and indicating if a lead separates at its bonds in response to said force and subsequently contacts said sensor.
Claim 23
Dependent Claim
30 words
A method according to claim 19 wherein said sensor includes a conductor connected in a circuit to an indicator and whose circuit is closed by a lead contacting said conductor.
Claim 24
Dependent Claim
21 words
A method according to claim 19 wherein said indicating indicates which leads separate at their bonds in response to said force.
Claim 25
Dependent Claim
33 words
A method according to claim 19 wherein said sensor includes a conductor for each of said leads to be tested connected in a circuit to an indicator which indicates which leads have failed.
Claim 26
Dependent Claim
67 words
An indicator for indicating failure of bonding of leads connecting a device to frame which leads are subjected to force comprising: a sensor means positioned adjacent said leads for sensing contact of said sensor means by a failed lead; and indicator means connected to said sensor means for indicating if a lead separates at its bond in response to said force and subsequently contacts said sensor means.
Claim 27
Dependent Claim
67 words
An indicator for indicating failure of bonding of leads connecting a device to frame which leads are subjected to force comprising: a sensor means positioned adjacent said leads for sensing contact of said sensor means by a failed lead; and indicator means connected to said sensor means for indicating if a lead separates at its bond in response to said force and subsequently contacts said sensor means.
Claim 28
Dependent Claim
32 words
An indicator according to claim 23 wherein said sensor means includes a conductor connected in a circuit to said indicator means and whose circuit is closed by a lead contacting said conductor.
Claim 29
Dependent Claim
22 words
An indicator according to claim 23 wherein said indicating means indicates which leads separate at their bonds in response to said force.
Claim 30
Dependent Claim
35 words
A method according to claim 23 wherein said sensor means includes a conductor for each of said leads to be tested connected in a circuit to said indicator means which indicates which leads have failed.
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) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |