Patent ID: 9095085
Filing Date: 2015-07-28
Classification: H05K,Y10T

Abstract:
1. A method of manufacturing a stacked multilayer structure, comprising the steps of: forming a first circuit layer with bumps on a substrate by a process of image transfer; punching an aluminum plate to form recesses corresponding to the bumps; forming a metal layer to cover the aluminum plate and sidewalls of the recesses; forming, in a plastic film having a glass fiber layer, openings corresponding to the bumps; using the aluminum plate to press the plastic film against the first circuit layer on the substrate to deform the plastic film such that a plurality of projection parts are formed on the plastic film with respect to the recesses of the aluminum plate and the bumps are under the projection parts; removing the aluminum plate; polishing the projection parts to form a smooth upper surface and expose the bumps; forming a second metal layer on the smooth upper surface; forming a second circuit layer by performing the process of image transfer on the second metal layer such that the second circuit layer is connected to the first circuit layer; and removing the substrate to form the stacked multilayer structure.