Patent US4654692A successfully refreshed from Google Patents.
US4654692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device of resin-seal type
Assignee: Toshiba Corp
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Filing: 1986-08-06
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Granted: 1987-03-31
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Expires: 2006-08-06
Abstract
Abstract Slits are formed in the metal wiring layer formed on the semiconductor of a semiconductor device to be resin sealed thereby to divide the total width of the metal wiring layer into divided widths each of the order of 30 to 40 μm, whereby stress generated in the metal wiring layer is absorbed and prevented from causing cracking, deformation, and other defects. The slits are arranged to be substantially parallel to the peripheral side of the device which is most closely located to the wiring part.
Inventors
- 👤 Toshiharu Sakurai
- 👤 Seiichi Hirata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:08
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10W20/41; H10W20/427; H10W20/43; H10W74/00; H10W74/10; H10W74/131; H10W74/137
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
62 words
In a resin-seal type semiconductor device having a wiring part of a semiconductor surface sealed with a resin, the improvement which comprises at least one slit formed in the wiring part for absorbing stress imparted thereto, each of said slits being arranged to be substantially parallel to a peripheral side of the device which is most closely located to the wiring part.
Claim 2
Dependent Claim
62 words
In a resin-seal type semiconductor device having a wiring part of a semiconductor surface sealed with a resin, the improvement which comprises at least one slit formed in the wiring part for absorbing stress imparted thereto, each of said slits being arranged to be substantially parallel to a peripheral side of the device which is most closely located to the wiring part.
Claim 3
Dependent Claim
28 words
A resin-seal type semiconductor device according to claim 1 in which a plurality of slits are formed in the wiring part in a mutually parallel and spacedapart state.
Claim 4
Dependent Claim
34 words
A resin-seal type semiconductor device according to claim 1 in which said at least one slit is formed by providing one or more separated slits in the wiring part in the longitudinal direction thereof.
Claim 5
Dependent Claim
19 words
A resin-seal type semiconductor device according to claim 1 in which the wiring part is an aluminum wiring layer.
Claim 6
Dependent Claim
77 words
A resin-seal type semiconductor device comprising: a semiconductor having resin-sealed surface; a wiring layer disposed above said surface; a means, formed integrally with said wiring layer and defining at least one slit, for absorbing stress forces imparted thereto and thereby preventing the formation of cracks in said device; wherein said means defines at least one slit oriented to be substantially parallel to a peripheral side of the device which is most closely located to the wiring part.
Claim 7
Dependent Claim
77 words
A resin-seal type semiconductor device comprising: a semiconductor having resin-sealed surface; a wiring layer disposed above said surface; a means, formed integrally with said wiring layer and defining at least one slit, for absorbing stress forces imparted thereto and thereby preventing the formation of cracks in said device; wherein said means defines at least one slit oriented to be substantially parallel to a peripheral side of the device which is most closely located to the wiring part.
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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |