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US 5,224,023 AGranted
Foldable electronic assembly module
OwnerGary W. Smith, Chris Karabatsosinventors
Life of this patent
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Abstract
An electronic assembly combines a number of commensurate printed circuit boards bonded to a common, flexible, interconnecting substrate in an alternately folded and layered arrangement against an end board that has a comb of terminals for mounting into a motherboard connector. The flexible substrate is sandwiched between half-sections of each board, allowing mounting of components from both faces of the board. The assembly is particularly indicated for high density applications such as memory modules.
Claims11
An electronic assembly which comprises:
- a flexible, insulating substrate having a network of conductive leads and connecting stations applied thereto;
- at least two substantially quadrangular circuit boards;
- each of said boards laminarly split into substantially symmetric half-sections;
- each of said half-sections having pads on a first face for mounting electronic components;
- each of said half-sections having an opposite second face bonded to said substrate;
- said half-sections laminated together on either side of a portion of the substrate sandwiched therebetween;
- said boards bonded in a side-by-side, parallely spaced-apart configuration;
- a first of said boards having a comb of connecting terminals integral with said first board along a first edge;
- said comb sized and dimensioned to engage a connecting port on a supporting structure;
- a plurality of feed-through connections on each of said boards interconnecting a plurality of said pads and terminals with said connecting stations;
- wherein any gap between two parallely spaced-apart edges of any two adjacent boards is wide enough to allow mounting of said boards in a parallel, face-to-face, layered arrangement by folding said substrate at said gap;
- said gap being wide enough to allow for an air space between any opposite facing components attached to separate boards;
- and,
- said gap having no components attached thereto.
11 more elements
Dependencies are inferred from the claim text.