Manufacturing method of multilayer substrate and multilayer substrate produced by the manufacturing method

摘要

Single-sided conductor patterned films 21 are prepared, each of which has a conductor pattern 22 formed only one side of a resin film 23 and via hole 24 filled with conductive paste 50. A single-sided conductor patterned film 31 which has a conductor pattern 22 formed only one side of a resin film 23 and an opening formed in the resin film 23 so as to expose an electrode 32 is laminated on the single-sided conductor patterned films 21. Moreover, a cover layer with an opening to expose an electrode 37 is laminated on a bottom surface of the single-sided conductor patterned films 21 to form a laminate. Then, by pressing the laminate while heating, a multilayer substrate 100 having the electrodes at both sides thereof can be produced.