VERFAHREN ZUR VERBINDUNG VON METALLISCHEN LEITERN EINER SCHICHTSTRUKTUR MIT EINER ZWISCHEN DEN SCHICHTEN LIEGENDEN ISOLIERSCHICHT.

摘要

A laser beam type working apparatus and method are disclosed which join together metal conductors (15, 16) formed as an alternate layer structure over a surface side of a light-transmitting substrate (11) with an interposing electrical insulator (18) provided therebetween. The joining together of these metal conductors (15, 16) is achieved by directing a laser beam (P) from a rear-surface side of the substrate (11) to an underlying metal conductor (16) to melt it and to flow out upwardly in a molten state so that the underlying metal conductor (16) is connected to an overlying metal conductor (15).