US3634600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic package
Assignee: CERAMIC METAL SYSTEMS Inc
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Filing: 1969-07-22
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Granted: 1972-01-11
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Expires: 1989-07-22
Abstract
Abstract A ceramic package bearing an electrically conducting pattern and adapted to receive diminutive electronic components such as semiconductor elements includes metallic plugs in the conducting pattern to serve as islands to which internal lead connections to the semiconductor element are made. The plugs permit a high degree of flexibility in material selection for contact areas providing different metals without costly selective plating techniques. The resulting structure can be fabricated without any gold plating steps. Similar plugs may be used as islands to which external leads are connected.
Inventors
- 👤 William F Griffin
- 👤 Alfred Morena Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:49
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/62; H10W70/63; H10W70/635; H10W76/00; H10W76/10; H10W76/12; H10W76/15; H10W76/157; H10W90/00; H10W90/701; H10W72/00; H10W72/50; H10W72/541; H10W72/5449; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49144
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
146 words
A subassembly for the encapsulation of an electronic component comprising a monolithic structure including a first electrically insulating layer, a centrally located first area in said layer, a sunburst pattern of electrical conductors overlying said layer, each of said conductors including ends proximate and remote with respect to said central area, a second electrically insulating layer juxtaposed with said first layer and including a plurality of first apertures each disposed to correspond to the proximate end of an associated one of said conductors, each of said first apertures including an electrically conducting plug having a first surface in electrical contact with an associated conductor, said second insulating layer overlying said sunburst and including a centrally located aperture sufficiently large to expose said first area, and means encompassing said first apertures for forming a bearing surface for sealing to a cover spaced apart from said first aperture.
Claim 2
Dependent Claim
146 words
A subassembly for the encapsulation of an electronic component comprising a monolithic structure including a first electrically insulating layer, a centrally located first area in said layer, a sunburst pattern of electrical conductors overlying said layer, each of said conductors including ends proximate and remote with respect to said central area, a second electrically insulating layer juxtaposed with said first layer and including a plurality of first apertures each disposed to correspond to the proximate end of an associated one of said conductors, each of said first apertures including an electrically conducting plug having a first surface in electrical contact with an associated conductor, said second insulating layer overlying said sunburst and including a centrally located aperture sufficiently large to expose said first area, and means encompassing said first apertures for forming a bearing surface for sealing to a cover spaced apart from said first aperture.
Claim 3
Dependent Claim
18 words
A subassembly in accordance with claim 1 wherein each of said electrically insulating layers comprises a ceramic material.
Claim 4
Dependent Claim
113 words
A subassembly in accordance with claim 2 wherein said first electrically insulating layer includes a centrally disposed aperture having a first diameter, said package also including a third electrically insulating layer bearing an electrically conducting overlay disposed adjacent said first insulating layer to correspond to said centrally disposed apertures, and said means encompassing said first apertures including a fourth electrically insulating layer disposed adjacent said second insulating layer, said last-mentioned layer including a centrally disposed aperture having a diameter larger than said first diameter for exposing said first apertures, said fourth insulating layer being adapted for receiving a cover and electrically conducting leads attached to said remote ends of said electrically electrical conductors.
Claim 5
Dependent Claim
24 words
A subassembly in accordance with claim 1 wherein said first surface of each of said plugs is coated by an electrically conducting, oxidation-resisting plating.
Claim 6
Dependent Claim
12 words
A subassembly in accordance with claim 4 wherein said plating comprises gold.
Claim 7
Dependent Claim
14 words
A subassembly in accordance with claim 1 wherein each of said plugs comprises gold.
Claim 8
Dependent Claim
17 words
A subassembly in accordance with claim 1 wherein each of said first surfaces if of reduced geometry.
Claim 9
Dependent Claim
16 words
A subassembly in accordance with claim 1 wherein said plugs comprise materials different from one another.
Claim 10
Dependent Claim
29 words
A subassembly in accordance with claim 1 wherein said first electrically insulating layer also includes a plurality of apertures each associated with a different one of said remote ends.
Claim 11
Dependent Claim
18 words
A subassembly in accordance with claim 9 wherein each of said last-mentioned apertures includes an electrically conducting plug.
Claim 12
Dependent Claim
125 words
A subassembly for a ceramic package comprising a monolithic structure including a first ceramic layer having first and second surfaces, said layer having a first centrally located aperture therethrough, an electrically conducting sunburst pattern on said first surface having ends proximate and remote with respect to said aperture, said layer including a plurality of holes in the proximate ends of said sunburst pattern and metallic plugs in said holes, said subassembly also including an additional ceramic layer having a second centrally disposed aperture larger than said first for exposing said plugs, and an electronic element having a plurality of active areas therein, said element being positioned within said centrally located apertures and having wire connections between said active areas and different ones of said plugs.
Claim 13
Dependent Claim
125 words
A subassembly for a ceramic package comprising a monolithic structure including a first ceramic layer having first and second surfaces, said layer having a first centrally located aperture therethrough, an electrically conducting sunburst pattern on said first surface having ends proximate and remote with respect to said aperture, said layer including a plurality of holes in the proximate ends of said sunburst pattern and metallic plugs in said holes, said subassembly also including an additional ceramic layer having a second centrally disposed aperture larger than said first for exposing said plugs, and an electronic element having a plurality of active areas therein, said element being positioned within said centrally located apertures and having wire connections between said active areas and different ones of said plugs.
Claim 14
Dependent Claim
16 words
A subassembly in accordance with claim 11 including a third ceramic layer contiguous said second surface.
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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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |