Patent ID: 6378199
Filing Date: 2002-04-30
Classification: H05K,Y10T

Abstract:
A process for producing a multi-layer printed-wiring board, comprising:a step of forming on electrically conductive substrates respective wiring pattern layers, each having an electrically conductive layer, thereby preparing a plurality of transferring original plates; a step of forming an adhesive insulating photosensitive resin layer on one surface of a substrate for a multi-layer printed-wiring board, pressing said transferring original plate onto said adhesive insulating photosensitive resin layer, and releasing said electrically conductive substrate, thereby transferring said wiring pattern layer to said substrate for a multi-layer printed-wiring board; and a step of performing exposure and development of said adhesive insulating photosensitive resin layer with said wiring pattern layer transferred as a mask, wherein the step of transferring the wiring pattern layer and the exposure and development step of the adhesive insulating photosensitive resin layer are sequentially repeated, thereby laying a plurality of said wiring pattern layers in lamination on said substrate for a multi-layer printed-wiring board.