Patent ID: 6851599
Filing Date: 2005-02-08
Classification: H05K,Y10T

Abstract:
1. A method of producing a multilayer wired circuit board, the method comprising: providing a wired circuit board having a first conductor layer, said board containing at least one first opening therein; one of forming a thermosetting adhesive layer having at least one second opening previously formed therein, on said first conductor layer, and forming the thermosetting adhesive layer on said first conductor layer, followed by forming said at least one second opening in the thermosetting adhesive layer; charging solder powders in the second opening at a temperature of 5-50° C.; applying a second conductor layer on the thermosetting adhesive layer including the second opening filled with the solder powders; and melting the solder powders by heating to electrically connect between the first conductor layer and the second conductor layer.