Patent US3619731A successfully refreshed from Google Patents.
US3619731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple pellet semiconductor device
Assignee: RCA Corp
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Filing: 1968-10-11
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Granted: 1971-11-09
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Expires: 1988-10-11
Abstract
Abstract A semiconductor device comprises a substrate, a first semiconductor pellet mounted on the substrate, an insulating material washer mounted on the first pellet, and a second semiconductor pellet mounted on the washer. The second pellet is rigidly secured to the washer and the first pellet, and electrically connected to the first pellet, by means of a solder filling the washer central opening and bonded to both pellets.
Inventors
- 👤 Lawrence K Baker
- 👤 Lawrence R Shardlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:54
CPC Classifications
H; H10; H10W; H10W90/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A semiconductor device comprising: a first semiconductor pellet; an insulating member having a pair of external surfaces and an axial opening through said member extending between said surfaces, said opening being filled with a solid, electrically conductive material, one of the surfaces of said insulating member being engaged with said first pellet, a portion of said first pellet being directly bonded to said conductive material; and a second semiconductor pellet mounted on the other of said insulating member surfaces and being spaced from said first pellet by said member, said second pellet being directly bonded to said conductive material.
Claim 2
Dependent Claim
55 words
A semiconductor device as in claim 2 wherein: the opening in said insulating member at said one surface is disposed over said portion of said pellet; said second pellet is disposed over the opening in the other surface of said insulating member; and said conductive material mechanically joins together said insulating member and said pellets.
Claim 3
Dependent Claim
35 words
A semiconductor device as in claim 3 wherein: first pellet has an electrode thereon in spaced relation with said portion; and said insulating member is disposed on said pellet between said electrode and said portion.
Claim 4
Dependent Claim
34 words
A semiconductor device as in claim 4 wherein the thickness of said insulating member is greater than the thickness of said electrode, said second pellet being thus spaced out of contact with said electrode.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |