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US3831067A Expired / Lapsed US ⏱️ 0.0 years remaining

Semiconductor device with pressure connection electrodes and with headers cemented to insulation ring

Assignee: Infineon Technologies Americas Corp
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Filing: 1972-05-15
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Granted: 1974-08-20
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Expires: 1992-05-15
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Abstract

Abstract A pressure-assembled device has a premolded insulation ring with slots at each end of the ring which receive flexible header rims. The slots are tapered to automatically center the rims and the rims are cemented in the slots. The upper and lower headers and upper and lower main electrodes are identical in construction and the insulation ring is symmetrical. The same components are used for semiconductor devices with or without control electrodes except that a tube is molded in the insulation ring if the device is to have a control electrode.

Inventors

  • 👤 J Wislocky
  • 👤 A Carlan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 07:39
CPC Classifications
H; H10; H10W; H10W72/00; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138; H10W76/40

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 277 words
A semiconductor device comprising, in combination: a semiconductor wafer assembly having opposed flat parallel surfaces; first and second conductive pole pieces each having first surfaces in surface-to-surface contact with said opposed flat parallel surfaces, respectively, of said wafer assembly and second outer surfaces for connection to exterior circuits; first and second headers connected to said first and second pole pieces and each having disk portions and axially directed cylindrical flange portions extending from the outer peripheries of said disk portions, at least one of said headers having axial flexibility; an insulation ring surrounding said first and second pole pieces and said wafer assembly; said insulation ring having first and second opposing end surfaces; and first and second cylindrical slots entering said first and second end surfaces of said ring and being coaxial with one another; said slots having bottoms which are spaced from one another by the material of said insulation ring; said cylindrical flange portions of said first and second headers extending into said first and second slots, respectively; and a cured adhesive means which is sufficiently fluid in its uncured state to conform to the shapes of said first and second slots; said adhesive means disposed in said first and second slots and permanently connecting said insulation ring and said cylindrical flange portions of said first and second headers; and wherein said slots have tapered openings to permit the easy insertion of said cylindrical flange portions therein during the assembly of said device, and wherein bottom portions of said slots have a constant width only slightly larger than the thickness of said cylindrical flange portions, thereby to accurately center said headers relative to said ring.
Claim 2
Dependent Claim 277 words
A semiconductor device comprising, in combination: a semiconductor wafer assembly having opposed flat parallel surfaces; first and second conductive pole pieces each having first surfaces in surface-to-surface contact with said opposed flat parallel surfaces, respectively, of said wafer assembly and second outer surfaces for connection to exterior circuits; first and second headers connected to said first and second pole pieces and each having disk portions and axially directed cylindrical flange portions extending from the outer peripheries of said disk portions, at least one of said headers having axial flexibility; an insulation ring surrounding said first and second pole pieces and said wafer assembly; said insulation ring having first and second opposing end surfaces; and first and second cylindrical slots entering said first and second end surfaces of said ring and being coaxial with one another; said slots having bottoms which are spaced from one another by the material of said insulation ring; said cylindrical flange portions of said first and second headers extending into said first and second slots, respectively; and a cured adhesive means which is sufficiently fluid in its uncured state to conform to the shapes of said first and second slots; said adhesive means disposed in said first and second slots and permanently connecting said insulation ring and said cylindrical flange portions of said first and second headers; and wherein said slots have tapered openings to permit the easy insertion of said cylindrical flange portions therein during the assembly of said device, and wherein bottom portions of said slots have a constant width only slightly larger than the thickness of said cylindrical flange portions, thereby to accurately center said headers relative to said ring.
Claim 3
Dependent Claim 39 words
The combination of claim 1 wherein said first and second slots have the same diameter, and wherein said first and second headers have an identical construction, and wherein said first slot has a greater depth than said second slot.
Claim 4
Dependent Claim 25 words
The combination of claim 1 wherein said insulation ring is of a plastic material which is molded to shape prior to assembly of said device.
Claim 5
Dependent Claim 13 words
The combination of claim 1 wherein said pole pieces have an identical construction.
Claim 6
Dependent Claim 35 words
The combination of claim 1 wherein said first and second slots have the same diameter, and wherein said first and second headers have an identical construction, and wherein said pole pieces have an identical construction.
Claim 7
Dependent Claim 56 words
The combination of claim 1 wherein said first and second slots have the same diameter, and wherein said first and second headers have an identical construction, and wherein said pole pieces have an identical construction, and wherein said insulation ring is of a plastic material which is molded to shape prior to assembly of said device.
Claim 8
Dependent Claim 66 words
The combination of claim 1 which further includes a pedestal extending from said first pole piece and a centering ring having a disk-shaped portion and a flange extending from the outer periphery of said centering ring; said disk-shaped portion fitting over said pedestal and being centered thereby; said wafer assembly being received within said flange of said centering ring and thereby being centered on said pedestal.
Claim 9
Dependent Claim 67 words
The combination of claim 1 wherein said wafer assembly has a control lead extending therefrom; said insulation ring having a conductive tube embedded therein and extending through the radial width thereof; said control lead extending into said tube from the interior side of said insulation ring and electrically connected thereto; said tube extending beyond the outer side of said insulation ring and forming a control lead terminal.
Claim 10
Dependent Claim 21 words
The combination of claim 8 wherein said second pole piece has a construction identical to that of said first pole piece.
Claim 11
Dependent Claim 31 words
The combination of claim 9 wherein said insulation ring is of a plastic material which is molded to shape with said tube captured therein prior to the assembly of said device.

References Cited (Backward Citations)

US2373720A Cited
US2365518A Cited
US3499095A Cited
US3265805A Cited
US3457472A Cited
GB1188452A Cited
US3559001A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-08-19 1978-02-18 1978-08-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-08-19 1982-02-18 1982-08-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-08-19 1986-02-18 1986-08-20 $7700.00 Window Closed / Lapsed

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