US6048744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit package alignment feature
Assignee: Micron Technology Inc
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Filing: 1997-09-15
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Granted: 2000-04-11
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Expires: 2017-09-15
Abstract
Abstract An integrated circuit is provided having an alignment feature integral with the lead frame. The integrated circuit includes a lead frame coupled with a semiconductor die, and is partially encapsulated in insulating material. The lead frame has the alignment feature therein. The alignment feature includes a cut out on the lead frame taking the form of a semi-circle, protuberance, apertures, or slots. Alternatively, the alignment feature includes a removably coupled tab. After testing of the integrated circuit has been completed, the alignment tab is removed from the integrated circuit. The alignment feature can also be provided on a heat spreader which is attached to a side of or within the lead frame package.
Inventors
- 👤 David J. Corisis
- 👤 Tracy Reynolds
- 👤 Michael Slaughter
- 👤 Daniel Cram
- 👤 Leland R. Nevill
- 👤 Jerrold L. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:18
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/2851; H; H05; H05K; H05K3/00; H05K3/30; H05K3/303; H10; H10W; H10W46/00; H10W70/00; H10W70/40; H10W70/411; H10W70/415; G01R1/00; G01R1/02; G01R1/04; G01R1/0408; G01R31/2884; H05K2201/00; H05K2201/10; H05K2201/10431; H05K2201/10568; H05K2201/10613; H05K2201/10621; H05K2201/10689; H05K2201/10696; H05K2203/00; H05K2203/16; H05K2203/167; H10W46/601; H10W46/607; H10W72/00; H10W72/071; H10W72/075; H10W72/50; H10W72/541; H10W72/5449; H10W72/90; H10W72/931; H10W72/932; H10W72/951; H10W74/00; H10W90/00; H10W90/701; H10W90/751; H10W90/756; Y; Y02; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
A method for forming and testing an integrated circuit package, the method comprising the steps of: forming a lead frame including a plurality of conductors and at least one alignment feature; attaching a semiconductor die to the lead frame; electrically coupling the semiconductor die with at least some of the conductors of the lead frame; encapsulating the semiconductor die and a portion of the lead frame with an insulating material to form an integrated circuit package with the at least one alignment feature exposed on an exterior of the package; coupling the exposed alignment feature portion with a portion of a testing device such that the at least one alignment feature is electrically isolated from the plurality of conductors; and electrically testing the integrated circuit package through at least some of the electrically coupled conductors.
Claim 2
Independent Claim
135 words
A method for forming and testing an integrated circuit package, the method comprising the steps of: forming a lead frame including a plurality of conductors and at least one alignment feature; attaching a semiconductor die to the lead frame; electrically coupling the semiconductor die with at least some of the conductors of the lead frame; encapsulating the semiconductor die and a portion of the lead frame with an insulating material to form an integrated circuit package with the at least one alignment feature exposed on an exterior of the package; coupling the exposed alignment feature portion with a portion of a testing device such that the at least one alignment feature is electrically isolated from the plurality of conductors; and electrically testing the integrated circuit package through at least some of the electrically coupled conductors.
Claim 3
Dependent Claim
23 words
The method as recited in claim 1, further including the step of removing the at least one alignment feature from the lead frame.
Claim 4
Independent Claim
137 words
A method for testing an integrated circuit package, the method comprising the steps of: providing an integrated circuit package including: a lead frame including a plurality of conductors and at least one alignment tab; a semiconductor die electrically coupled with at least some of the conductors of the lead frame; insulating material encompassing the semiconductor die and a portion of the lead frame with the plurality of conductors and the at least one alignment tab extending outwardly exterior to the insulating material; coupling the at least one alignment tab with an alignment structure on testing equipment such that the at least one alignment tab is electrically isolated from the plurality of conductors; electrically testing the integrated circuit package through at least some of the electrically coupled conductors; and removing the integrated circuit package from the testing equipment.
Claim 5
Independent Claim
137 words
A method for testing an integrated circuit package, the method comprising the steps of: providing an integrated circuit package including: a lead frame including a plurality of conductors and at least one alignment tab; a semiconductor die electrically coupled with at least some of the conductors of the lead frame; insulating material encompassing the semiconductor die and a portion of the lead frame with the plurality of conductors and the at least one alignment tab extending outwardly exterior to the insulating material; coupling the at least one alignment tab with an alignment structure on testing equipment such that the at least one alignment tab is electrically isolated from the plurality of conductors; electrically testing the integrated circuit package through at least some of the electrically coupled conductors; and removing the integrated circuit package from the testing equipment.
Claim 6
Dependent Claim
23 words
The method as recited in claim 3, further including the step of removing the at least one alignment tab from the lead frame.
Claim 7
Independent Claim
99 words
A method for testing an integrated circuit package, the method comprising the steps of: providing an integrated circuit including: a plurality of conductors and at least one alignment feature electrically isolated from the plurality of conductors; a semiconductor die coupled with the plurality of conductors; insulating material encompassing a portion of the plurality of conductors with the at least one alignment feature exposed; engaging the at least one exposed alignment feature with an alignment structure on testing equipment; electrically testing the integrated circuit through at least some of the conductors; and removing the integrated circuit from the testing equipment.
Claim 8
Independent Claim
99 words
A method for testing an integrated circuit package, the method comprising the steps of: providing an integrated circuit including: a plurality of conductors and at least one alignment feature electrically isolated from the plurality of conductors; a semiconductor die coupled with the plurality of conductors; insulating material encompassing a portion of the plurality of conductors with the at least one alignment feature exposed; engaging the at least one exposed alignment feature with an alignment structure on testing equipment; electrically testing the integrated circuit through at least some of the conductors; and removing the integrated circuit from the testing equipment.
Claim 9
Dependent Claim
27 words
The method for testing an integrated circuit package of claim 5, further including the step of removing the at least one alignment feature from the lead frame.
References Cited (Backward Citations)
US3678385A
Cited
US5766978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-11 | 2003-10-11 | 2004-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-11 | 2007-10-11 | 2008-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-11 | 2011-10-11 | 2012-04-11 | $7700.00 | Window Closed / Lapsed |