Patent US4151546A successfully refreshed from Google Patents.
US4151546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device having electrode-lead layer units of differing thicknesses
Assignee: Toshiba Corp
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Filing: 1978-08-28
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Granted: 1979-04-24
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Expires: 1998-08-28
Abstract
Abstract A semiconductor device comprising electrode-lead layer units wherein at least one of said electrode-lead layer units or at least one portion of same of said units occupying certain positions in the semiconductor device is made thicker than the remainder, thereby enabling circuit elements to be integrated with a high density, namely, rendering the entire semiconductor device compact.
Inventors
- 👤 Kenji Kawagai
- 👤 Shigeki Yoshida
- 👤 Yasuo Nakada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:35
CPC Classifications
H; H10; H10D; H10D64/00; H10D64/20; H10D64/23; H10D64/251; H10W; H10W20/00; H10W20/40; H10W20/41; H10W20/43; H10W20/435
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
75 words
In a semiconductor device comprising a semiconductor substrate having semiconductor regions, an insulation layer, and electrode-lead layer units including electrode portions, lead pad portions and lead layer portions between and interconnecting said electrode portions and said lead pad portions; the improvement wherein at least one portion of at least one electrode-lead layer unit comprises a first conductive layer and a second conductive layer directly laminated on the whole outer surface of said first conductive layer.
Claim 2
Dependent Claim
75 words
In a semiconductor device comprising a semiconductor substrate having semiconductor regions, an insulation layer, and electrode-lead layer units including electrode portions, lead pad portions and lead layer portions between and interconnecting said electrode portions and said lead pad portions; the improvement wherein at least one portion of at least one electrode-lead layer unit comprises a first conductive layer and a second conductive layer directly laminated on the whole outer surface of said first conductive layer.
Claim 3
Dependent Claim
30 words
The semiconductor device according to claim 1, wherein the first and second conductive layers are made of one material selected from the group consisting of aluminum, molybdenum and polycrystalline silicon.
Claim 4
Dependent Claim
40 words
The semiconductor device according to claim 1, which comprises a metal oxide semiconductor field effect transistor in which the source electrode portion, drain electrode portion and lead layer portions connected thereto are each formed of first and second conductive layers.
Claim 5
Dependent Claim
18 words
The semiconductor device according to claim 2, wherein the first and second conductive layers are made of aluminum.
Claim 6
Dependent Claim
70 words
In a semiconductor device comprising a semiconductor substrate having semiconductor regions, an insulation layer, and electrode-lead layer units including electrode portions, lead pad portions and lead layer portions between and interconnecting said electrode portions and said lead pad portions; the improvement wherein at least one lead pad portion comprises a first conductive layer and a second conductive layer directly laminated on the whole outer surface of said first conductive layer.
Claim 7
Dependent Claim
70 words
In a semiconductor device comprising a semiconductor substrate having semiconductor regions, an insulation layer, and electrode-lead layer units including electrode portions, lead pad portions and lead layer portions between and interconnecting said electrode portions and said lead pad portions; the improvement wherein at least one lead pad portion comprises a first conductive layer and a second conductive layer directly laminated on the whole outer surface of said first conductive layer.
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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) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |