Patent US4985748A successfully refreshed from Google Patents.
US4985748A
Expired / Lapsed
US
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Universal tape for use in tape automated bonding system
Assignee: AG Communication Systems Corp
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Filing: 1989-12-27
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Granted: 1991-01-15
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Expires: 2009-12-27
Abstract
Abstract An improved method of tape automated bonding that makes use of a "universal" tape to accommodate integrated circuit chips having different bonding site patterns. The tape comprises a series of parallel continuous thin metal beam lead conductors fixed to a flexible plastic substrate. Two such tapes are disposed at right angles to each other forming in effect a square matrix of beam lead conductors. Each tape site is custom trimmed to match the bonding pad locations of each different integrated circuit chip.
Inventors
- 👤 Thomas D. Belanger, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:49
CPC Classifications
H; H10; H10W; H10W90/00; H10W90/401; H10W70/00; H10W70/40; H10W70/453
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
A universal tape arrangement to accommodate an integrated circuit chip as part of an improved method of tape automated bonding comprising: a first tape including a series of parallel continuous thin metal beam lead conductors superimposed on a flexible substrate, each conductor spaced from the other; a second tape comprising a series of parallel continuous thin metal beam lead conductors superimposed on a flexible substrate, each conductor spaced from the other; said first and said second tape disposed at right angles to each other to form a square matrix of beam lead conductors; said tape arrangement trimmed to match said bonding pad locations of said integrated circuit chip whereby one of said tapes serves as a carrier and the other tape has the substrate removed in an area of the integrated circuit, in order that a portion of said beam lead conductors provide support and connection to said chip.
Claim 2
Dependent Claim
149 words
A universal tape arrangement to accommodate an integrated circuit chip as part of an improved method of tape automated bonding comprising: a first tape including a series of parallel continuous thin metal beam lead conductors superimposed on a flexible substrate, each conductor spaced from the other; a second tape comprising a series of parallel continuous thin metal beam lead conductors superimposed on a flexible substrate, each conductor spaced from the other; said first and said second tape disposed at right angles to each other to form a square matrix of beam lead conductors; said tape arrangement trimmed to match said bonding pad locations of said integrated circuit chip whereby one of said tapes serves as a carrier and the other tape has the substrate removed in an area of the integrated circuit, in order that a portion of said beam lead conductors provide support and connection to said chip.
Claim 3
Dependent Claim
16 words
A tape arrangement as claimed in claim 1 wherein: said substrates are of polyimide flexible plastic.
Claim 4
Dependent Claim
18 words
A tape arrangement as claimed in claim 1 wherein: each of said metal beams are equal in width.
Claim 5
Dependent Claim
30 words
A tape arrangement as claimed in claim 3 wherein: there is further provided spacing between each of said beams each being equivalent in width to the width of said beams.
Claim 6
Dependent Claim
52 words
A tape arrangement as claimed in claim 1 wherein: unused beam lead conductors are removed by trimming by means of a programmable laser, or in the alternative, by means of a mechanical punch in order that only said portion of said beams matching the bonding pad locations of said integrated chip remain.
References Cited (Backward Citations)
US4663650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |