Patent US2269887A successfully refreshed from Google Patents.
US3673468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor rectifying arrangement
Assignee: Semikron GmbH and Co KG
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Filing: 1970-03-30
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Granted: 1972-06-27
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Expires: 1990-03-30
Abstract
Abstract A single plate of semiconducting material is provided with nconducting and p-conducting zones at predetermined locations. The grooves are placed in the plate as a function of the location of the n- and p-conducting zones. Metal conductive paths are then placed on the semiconducting plate as a function of the location of the n- and p-conducting zones and the grooves. There results, for example, a rectifying bridge circuit formed in a single piece of semiconducting material.
Inventors
- 👤 Horst Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:16
CPC Classifications
H; H10; H10D; H10D99/00; H10W; H10W10/00; H10W10/01; H10W10/021; H10W10/20; Y; Y10; Y10S; Y10S257/00; Y10S257/909
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
434 words
A semiconductor rectifying arrangement comprising a semiconductor body having a groove and two contact surfaces, said body further having two zones of the same conductivity type, said two zones being completely separated from one another by said groove, one of said two contact surfaces being a boundary surface of one of said two zones, the other of said two contact surfaces being a boundary surface of the other of said two zones, said body further having a third zone of conductivity type opposite to that possessed by said two zones, said third zone extending across the tip of the groove and forming pn-junctions with said two zones, said body further having a third contact surface being a boundary surface of said third zone, said third contact surface extending across the tip of the groove, and a conductive path on the third contact surface and extending across the tip of said groove, said body further having a transverse groove extending into said body transversely to the first groove, said body further having a second set of two zones of the same conductivity type, their conductivity being opposite to the conductivity type of the first two zones, the two zones of said second set being connected to the zones of the first two zones by ties at the tip of said transverse groove, whereby pn-junctions are formed between said second set and the first two zones, the two zones of said second set being completely separated from one another by a groove in said body, the two contact surfaces of the first two zones being coplanar at said ties with contact surfaces of said second set of zones, conductive paths on the two contact surfaces of the first two zones and extending across said ties onto the contact surfaces of said second set, whereby the pn-junctions between said second set and the first two zones are shortcircuited, said body having a fourth zone of conductivity type opposite to that possessed by said second set, said fourth zone extending across the tip of the groove between the two zones of said second set and forming pn-junctions with the two zones of said second set, said body further having a fourth contact surface being a boundary of said fourth zone, said fourth contact surface extending across the tip of the groove between the two zones of said second set, and a conductive path on the fourth contact surface and extending across the tip of the groove between the two zones of said second set, said fourth zone being completely separated from said third zone by said transverse groove.
Claim 2
Dependent Claim
434 words
A semiconductor rectifying arrangement comprising a semiconductor body having a groove and two contact surfaces, said body further having two zones of the same conductivity type, said two zones being completely separated from one another by said groove, one of said two contact surfaces being a boundary surface of one of said two zones, the other of said two contact surfaces being a boundary surface of the other of said two zones, said body further having a third zone of conductivity type opposite to that possessed by said two zones, said third zone extending across the tip of the groove and forming pn-junctions with said two zones, said body further having a third contact surface being a boundary surface of said third zone, said third contact surface extending across the tip of the groove, and a conductive path on the third contact surface and extending across the tip of said groove, said body further having a transverse groove extending into said body transversely to the first groove, said body further having a second set of two zones of the same conductivity type, their conductivity being opposite to the conductivity type of the first two zones, the two zones of said second set being connected to the zones of the first two zones by ties at the tip of said transverse groove, whereby pn-junctions are formed between said second set and the first two zones, the two zones of said second set being completely separated from one another by a groove in said body, the two contact surfaces of the first two zones being coplanar at said ties with contact surfaces of said second set of zones, conductive paths on the two contact surfaces of the first two zones and extending across said ties onto the contact surfaces of said second set, whereby the pn-junctions between said second set and the first two zones are shortcircuited, said body having a fourth zone of conductivity type opposite to that possessed by said second set, said fourth zone extending across the tip of the groove between the two zones of said second set and forming pn-junctions with the two zones of said second set, said body further having a fourth contact surface being a boundary of said fourth zone, said fourth contact surface extending across the tip of the groove between the two zones of said second set, and a conductive path on the fourth contact surface and extending across the tip of the groove between the two zones of said second set, said fourth zone being completely separated from said third zone by said transverse groove.
Claim 3
Dependent Claim
27 words
An arrangement as claimed in claim 1, the groove between the two zones of said second set being aligned with the groove between the first two zones.
Claim 4
Dependent Claim
29 words
An arrangement as claimed in claim 1, the first two zones bordering on the groove between them, the zones of said second set bordering on the groove between them.
Claim 5
Dependent Claim
109 words
An arrangement as claimed in claim 3, wherein edge-portions of the pn-junctions of the first two zones border on the groove between the first two zones, edge-portions of the pn-junctions of the zones of said second set border on the groove between the zones of said second set, wherein at least those portions of the pn-junctions of the first two zones that border on the groove between the first two zones lie in a common plane and wherein at least those portions of the pn-junctions of the zones of said second set that border on the groove between the zones of the second set lie in a common plane.
Claim 6
Dependent Claim
50 words
An arrangement as claimed in claim 4, the groove between the first two zones lying in a plane perpendicular to said common plane of the first two zones, the groove between the zones of said second set lying in a plane perpendicular to said common plane of said second set.
Claim 7
Dependent Claim
81 words
An arrangement as claimed in claim 1, said semiconductor body having the shape of a plate with a top surface and a bottom surface, the two sets of two zones being on the bottom surface, the third zone and the fourth zone being on the top surface, the orthogonal projections of the zones of the top and bottom surfaces onto a plane parallel to the top and bottom surfaces coinciding, zones coinciding in said orthogonal projections being of opposite conductivity type.
Claim 8
Dependent Claim
28 words
An arrangement as claimed in claim 6, said top surface and said bottom surface each being completely coated with conductive material except at the locations of said grooves.
Claim 9
Dependent Claim
291 words
An arrangement as claimed in claim 1, said body having at least on extra transverse groove, said body further having a third set of two zones of the same conductivity type, their conductivity being the same as the conductivity of the first two zones, the two zones of said third set being connected to the zones of said second set by ties at the tip of said extra transverse groove, whereby pn-junctions are formed between said second set and said third set, the two zones of said third set being completely separated from one another by a groove in said body, the contact surfaces of the second set being coplanar at the ties between the second and third sets with contact surfaces of said third set, said conductive paths on the two contact surfaces of the first two zones and on the contact surfaces of the second set extending across said ties between the second and third sets, whereby the pn-junctions between said second set and the third set are short-circuited, said body having a fifth zone of conductivity type opposite to that possessed by said third set, said fifth zone extending across the tip of the groove between the two zones of said third set and forming pn-junctions with the two zones of said third set, said body further having a fifth contact surface being a boundary of said fifth zone, said fifth contact surface extending across the tip of the groove between the two zones of said third set, and a conductive path on said fifth contact surface and extending across the tip of the groove between the two zones of said third set, said fifth zone being completely separated from said fourth zone by said extra transverse groove.
Claim 10
Dependent Claim
201 words
An arrangement as claimed in claim 8, said body having at least one extra first groove; the first set of zones formed by said first two zones, said second set, and said third set all containing an extra zone of the same conductivity type as that possessed by the initial two zones in the sets; the extra zones neighboring adjoining ones of the initial two zones in the sets and being completely separated from them by said extra first groove; said body further having extra contact surfaces forming boundary surfaces of said extra zones; said third, fourth and fifth zones extending across the tip of said extra first groove and forming pn-junctions with said extra zones; the conductive paths on said third, fourth and fifth zones extending across the tip of said extra groove; the pn-junctions formed by said third zone with the zonEs of said first set being coplanar in a first plane; the pn-junctions formed by said fourth zone with the zones of said second set being coplanar in a second plane spaced from said first plane; the pn-junctions formed by said fifth zone with the zones of said third set being coplanar and lying in said first plane.
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |