MEHRSCHICHTIGE GEDRUCKTE SCHALTUNG UND VERFAHREN ZU IHRER HERSTELLUNG.

摘要

A multilayer printed wiring board produced by buildup process. A first layer printed wiring pattern (13) is formed on a metal core (11) through a first insulation laminate (12), and a second layer printed wiring pattern (16) is formed on the first layer printed wiring pattern through through-studs (15) and a second insulation laminate (14). The surface of the first layer printed wiring pattern (13) is roughened and the through studs (15) are formed by buildup process a conductive paste on the roughened surface.