US4949155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape carrier for semiconductor chips
Assignee: Sharp Corp
•
Filing: 1988-07-14
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Granted: 1990-08-14
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Expires: 2008-07-14
Abstract
Abstract A tape carrier for semiconductor chips including an insulating tape; a plurality of first conductor patterns longitudinally formed on the tape and spaced from each other each of the first conductor patterns having first leads connected with substrate electrodes of a semiconductor chip and second lead connected with the other electrodes of the chip; a second conductor shaped like a stripe and disposed near each of the first conductor patterns on the tape; and a third conductor pattern formed on the tape and having conductors electrically connecting the first leads with the second conductor pattern.
Inventors
- 👤 Naoyuki Tajima
- 👤 Takaaki Tsuda
- 👤 Yasunori Chikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:03
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/40; H10W70/453; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0254
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
148 words
A tape carrier for semiconductor chips, comprising: an insulating tape; a plurality of first conductor patterns longitudinally formed on the insulating tape and spaced from each other, each of the first conductor patterns having a first lead connected with a substrate electrode of a semiconductor chip and second leads connected with the other electrodes of the chip; a second stripe shaped conductor pattern disposed near each of the first conductor patterns on the insulating tape; and a third conductor pattern formed on the insulating tape and having conductors electrically connecting the first lead with the second conductor pattern; said second conductor pattern being connected with the substrate electrode through the third conductor pattern, thereby lowering the electrostatic potential of the tape carrier, each of these second leads being separate from any other lead and conductor pattern, thereby enabling individual testing of semiconductor chips mounted on the tape carrier.
Claim 2
Dependent Claim
148 words
A tape carrier for semiconductor chips, comprising: an insulating tape; a plurality of first conductor patterns longitudinally formed on the insulating tape and spaced from each other, each of the first conductor patterns having a first lead connected with a substrate electrode of a semiconductor chip and second leads connected with the other electrodes of the chip; a second stripe shaped conductor pattern disposed near each of the first conductor patterns on the insulating tape; and a third conductor pattern formed on the insulating tape and having conductors electrically connecting the first lead with the second conductor pattern; said second conductor pattern being connected with the substrate electrode through the third conductor pattern, thereby lowering the electrostatic potential of the tape carrier, each of these second leads being separate from any other lead and conductor pattern, thereby enabling individual testing of semiconductor chips mounted on the tape carrier.
Claim 3
Dependent Claim
25 words
The tape carrier of claim 1, wherein the first, second, and third conductor patterns are etched on a metal foil laminated on the insulating tape.
Claim 4
Dependent Claim
21 words
The tape carrier of claim 1, wherein the second conductor pattern has stripes surrounding the first conductor pattern on every side.
Claim 5
Dependent Claim
23 words
The tape carrier of claim 3, wherein the second conductor pattern is electrically connected with adjacent second conductor patterns on both sides thereof.
Claim 6
Dependent Claim
20 words
The tape carrier of claim 3 or 4, wherein the second conductor pattern is discontinuous at one or more portions.
Claim 7
Dependent Claim
24 words
The tape carrier of claim 1, wherein the second conductor pattern has stripes surrounding the first conductor pattern on all but one side thereof.
Claim 8
Dependent Claim
23 words
The tape carrier of claim 6, wherein the second conductor pattern is electrically connected with adjacent second conductor patterns on both sides thereof.
Claim 9
Dependent Claim
22 words
The tape carrier of claim 1, wherein the second conductor pattern has a stripe formed along one edge of the insulating tape.
Claim 10
Dependent Claim
22 words
The tape carrier of claim 8, wherein the second conductor is electrically connected with adjacent second conductor patterns on both sides thereof.
Claim 11
Dependent Claim
21 words
The tape carrier of claim 1, wherein the second conductor pattern has stripes formed along both edges of the insulating tape.
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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) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |