US3663868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed semiconductor device
Assignee: NEC Corp
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Filing: 1970-10-16
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Granted: 1972-05-16
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Expires: 1990-10-16
Abstract
Abstract A hermetically sealed container for a semiconductor device or the like comprises a peripheral wall portion surrounding the semiconductor device and secured, such as by brazing, at its lower end to an insulating substrate. The upper section of the wall portion is thicker than its lower portion to thereby permit increased mechanical contact strength.
Inventors
- 👤 Shozo Noguchi
- 👤 Yoshiyuki Nanko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:55
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/134; H10W76/15; H10W76/153; H10W72/00; H10W72/50; H10W72/541; H10W72/547; H10W72/5475; H10W90/00; H10W90/701; H10W90/751; H10W90/754
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
A hermetically sealed container for a semiconductor device comprising an insulating substrate for supporting a semiconductor chip thereon, at least one conducting lead adhered to said substrate for providing an electrical connection from said semiconductor chip to an external circuit, a wall portion having upper and lower sections and surrounding said semiconductor chip, said wall portion being in the form of a hollow cylinder, said upper wall section having an inwardly extending portion along the axis of said wall portion, said lower section being secured to said substrate, and a cover plate adhered to the increased thickness upper section of said wall portion.
Claim 2
Dependent Claim
103 words
A hermetically sealed container for a semiconductor device comprising an insulating substrate for supporting a semiconductor chip thereon, at least one conducting lead adhered to said substrate for providing an electrical connection from said semiconductor chip to an external circuit, a wall portion having upper and lower sections and surrounding said semiconductor chip, said wall portion being in the form of a hollow cylinder, said upper wall section having an inwardly extending portion along the axis of said wall portion, said lower section being secured to said substrate, and a cover plate adhered to the increased thickness upper section of said wall portion.
Claim 3
Dependent Claim
47 words
The hermetically sealed container as claimed in claim 1, wherein said substrate has at least one metallized opening formed therein, said lead being secured to the outer surface of said substrate and electrically connected to at least one electrode of said semiconductor chip through said metallized opening.
Claim 4
Dependent Claim
27 words
The hermetically sealed container as claimed in claim 1, wherein the inner diameter of said inwardly extending portion decreases in a stepwise manner toward said upper section.
Claim 5
Dependent Claim
49 words
The hermetically sealed container as claimed in claim 1, wherein said wall portion has an upwardly and inwardly sloping surface to make the thickness at the upper end of said wall portion greater than the thickness at its lower end and to thereby define said increased thickness upper section.
Claim 6
Dependent Claim
32 words
The hermetically sealed container as claimed in claim 1, further comprising a conducting peripheral element secured to saiD substrate, said lower section of said wall portion being bonded to said peripheral element.
Claim 7
Dependent Claim
36 words
The hermetically sealed container as claimed in claim 2, further comprising a conducting region secured to the outer surface of said substrate, surrounding the lower end of said metallized opening, and electrically coupled to said lead.
References Cited (Backward Citations)
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US3478161A
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |