Hermetically sealed circuit modules having conductive cap anchors
First Claim
1. An electronic module comprising, in combination:
- (a) a multi-layer circuit board comprising a plurality of layers defining circuit paths in a plurality of first layers and insulation in a plurality of second layers between the first layers, and conductive vias extending through selected layers between selected ones of the circuit paths in different ones of the first layers, at least some of the circuit paths being exposed to a top surface of the circuit board;
(b) a plurality of circuit components supported on the top surface of the circuit board and electrically connected to selected ones of the exposed circuit paths;
(c) a substrate, the multi-layer circuit board being supported on the substrate;
(d) a cap anchor formed of a conductive portion in each of the plurality of layers of the circuit board, the conductive portions being stacked between the top surface and the substrate;
(e) a cap having a lid and a skirt portion hermetically sealed to the top surface of the circuit board to enclose a region of the circuit board in which the circuit components are supported, the skirt of the cap being sealed to the cap anchor;
(f) a plurality of conductive pads on the top surface of the circuit board outside the region enclosed by the cap; and
(g) conductive paths connecting individual conductive pads to selected ones of the circuit paths and vias.
3 Assignments
0 Petitions
Accused Products
Abstract
A circuit module includes a multilayer circuit board having a plurality of alternate layers defining circuit paths and insulation with conductive vias between selected circuit paths of different layers. A hermetic seal is sealed to the top layer of the multilayer circuit board, and the circuit paths and/or vias are selectively connected to external pads by vias extending through the multilayer circuit board, one via terminating at a pad internal to the sealed region and another via terminating at the external pad. In one form, the vias providing the external connection extend into a substrate supporting the board, and circuit paths in the substrate electrically connect the vias together. In a second form, the vias providing the external connection are electrically connected together by selected circuit paths in the circuit board. A conductive anchor extends through the circuit board to the substrate to provide an anchor for the seal. Where the vias providing external connection are connected by selected circuit paths in the circuit board, the conductive anchor comprises posts having openings through which the selected circuit paths pass.
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Citations
17 Claims
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1. An electronic module comprising, in combination:
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(a) a multi-layer circuit board comprising a plurality of layers defining circuit paths in a plurality of first layers and insulation in a plurality of second layers between the first layers, and conductive vias extending through selected layers between selected ones of the circuit paths in different ones of the first layers, at least some of the circuit paths being exposed to a top surface of the circuit board; (b) a plurality of circuit components supported on the top surface of the circuit board and electrically connected to selected ones of the exposed circuit paths; (c) a substrate, the multi-layer circuit board being supported on the substrate; (d) a cap anchor formed of a conductive portion in each of the plurality of layers of the circuit board, the conductive portions being stacked between the top surface and the substrate; (e) a cap having a lid and a skirt portion hermetically sealed to the top surface of the circuit board to enclose a region of the circuit board in which the circuit components are supported, the skirt of the cap being sealed to the cap anchor; (f) a plurality of conductive pads on the top surface of the circuit board outside the region enclosed by the cap; and (g) conductive paths connecting individual conductive pads to selected ones of the circuit paths and vias. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electronic module comprising, in combination:
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(a) a substrate; (b) a circuit board supported on the substrate, the circuit board having a plurality of circuit paths; (c) a plurality of circuit components supported on the circuit board and electrically connected to selected ones of the circuit paths; (d) a conductive cap anchor through the circuit board between a top surface of the circuit board and the substrate; (e) a cap having a lid and a skirt portion connected to the cap anchor and hermetically sealed to the top surface of the circuit board to enclose a region of the circuit board in which the circuit components are supported; (f) a plurality of conductive pads on the top surface of the circuit board outside the region enclosed by the cap; and (g) conductive paths connecting individual conductive pads to selected ones of the circuit paths. - View Dependent Claims (15, 16, 17)
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Specification