Patent ID: 6703565
Filing Date: 2004-03-09
Classification: H05K,Y10S,Y10T

Abstract:
A printed wiring board comprising;at least one adhesive resin-based insulator sheet having through holes filled with a conductive material; at least one conductive wiring pattern, which has been transferred from a surface of a releasable supporting sheet to a surface of said adhesive resin-based insulator sheet having the through holes filled with the conductive material, connected with the conductive material in the through holes; a surface layer of the printed wiring board being flat and defined by one of the at least one conductive wiring pattern being embedded in one of the at least one adhesive resin-based insulator sheet so that an upper surface of the embedded wiring pattern and surrounding portions of the insulator sheet in which the wiring pattern is embedded form a flat surface so that the upper surface of the embedded wiring pattern and the insulator sheet in which the wiring pattern is embedded form a single plane, wherein the adhesive resin-based insulator sheet is made from a glass-epoxy prepreg.