METHOD FOR PRODUCING A BASIC MATERIAL FOR A HYBRID CIRCUIT

摘要

1. Process for the production of a base material for a hybrid circuit, comprising a carrier substrate with metal layers applied in a plurality of layers, electrically insulated with respect to each other and each divided by suitable means into bond surfaces and strip conductors, a plurality of points of intersection being formed from the first metal layer by the formation of a plurality of first strip conductors and from the second metal layer by the formation of a plurality of second strip conductors crossing the first strip conductors, characterised in that between the strip conductor planes of the first and second metal layers there is used an insulating layer of polycrystalline insulating silicon which can be converted into an electrically conductive material, so that a focussed laser beam can be used to achieve an electrical contact to be provided in the area of the intersection points.