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US 9,174,047 B2Granted
Electrical feedthrough assembly
AssigneeAdvanced Bionics AG
InventorsKurt J. Koester, Chuladatta Thenuwara, Timothy Beerling, Mark B. Downing, David Stuursma, Logan Palmer
Life of this patent
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Abstract
A device includes a hermetically sealed case with electronic circuitry housed within. One surface of the hermetically sealed case includes a metallic plate and a co-fired ceramic electrical feedthrough with a number of vias. The co-fired ceramic electrical feedthrough is hermetically joined to the metallic plate and a hybrid circuit is connected to the feedthrough.
Claims22
A device comprising:
- a hermetically sealed case with electronic circuitry housed within;
- in which one surface of the hermetically sealed case comprises:
- a metallic plate;
- a co-fired ceramic electrical feedthrough comprising a number of vias being hermetically joined to the metallic plate, wherein a ratio of a length of the metal plate to a length of the feedthrough in a same direction as the length of the metal plate is greater than 5 to 1;
- and
- a hybrid circuit electrically coupled to vias of the feedthrough.
3 more elements
A method for fabricating a device with a hermetic electrical feedthrough comprising:
- forming a metallic plate with an aperture, wherein a ratio of a diameter of the aperture to a diameter of the plate is less than 1 to 5;
- forming a multilayer ceramic feedthrough with electrical vias;
- forming connection pads on either side of the electrical vias;
- forming a hermetic joint which seals the ceramic feedthrough plate into the aperture;
- and
- electrically connecting a separate co-fired ceramic hybrid circuit to the ceramic feedthrough.
3 more elements
A device comprising:
- a hermetically sealed case with electronic circuitry housed within;
- in which one surface of the hermetically sealed case comprises:
- a metallic plate;
- a co-fired ceramic electrical feedthrough comprising a number of vias being hermetically joined to the metallic plate, an exterior surface of the ceramic feedthrough being recessed relative to a surface on the metallic plate so as to protect the ceramic feedthrough from damage;
- and
- a hybrid circuit electrically coupled to vias of the feedthrough.
3 more elements
Dependencies are inferred from the claim text.