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US 4,634,826 AGranted
Method for producing electric circuits in a thin layer, the tool to implement the method, and products obtained therefrom
AssigneeSolems S.A.
InventorsIonel Solomon, Jacques Meot, Patrick Meligne
Life of this patent
Estimating the term…
Abstract
Thin-layered conductive or semi-conductive electric circuits are made on a thin conductive or semi-conductive layer that was previously deposited on an electric insulating substrate. The electric circuits are produced by attacking with an electro-erosion tool the thin layer so as to form insulated paths thereon.
Claims8
A method of producing desired electric circuits in a thin layer having certain electrical conductivity, comprising the steps of:
- depositing the thin layer onto an insulating electric substrate;
- submerging the thin layer into an environment which, when properly stimulated, is capable of electro-chemically changing the chemical composition of the thin layer;
- applying the tip of an electro-erosion tool to the thin layer for producing between the tip and the thin layer an electro-erosion arc, the arc and the environment electro-chemically changing the thin layer at the point of the arc contact for producing an insulating compound having chemical composition different from the thin layer at the contact point thereof;
- and
- moving the tool in relation to the thin layer along a predetermined insulation path for producing in the thin layer the desired circuits.
2 more elements
A method of producing desired electric circuits in a thin layer having certain electrical conductivity, comprising the steps of:
- depositing the thin layer onto an insulating electric substrate;
- submerging the thin layer into an environment which, when properly stimulated, is capable of electro-chemically changing the chemical composition of the thin layer;
- applying the tip of an electro-erosion tool to the thin layer for producing between the tip and the thin layer an electro-erosion arc, the arc and the environment electro-chemically changing the thin layer at the point of the arc contact for producing an insulating compound having chemical composition different from the thin layer at the contact point thereof;
- and
- moving the tool in relation to the thin layer along a predetermined insulation path for producing in the thin layer the desired circuits;
- wherein the tool includes:
- a supply bobbin;
- a return bobbin;
- a roller interposed between the supply and return bobbins;
- and
- a metal wire drawn tautly between the bobbins and partially bent around the roller, the wire partially protruding from the roller for producing along its length the electro-erosion tip.
8 more elements
Dependencies are inferred from the claim text.