Patent ID: 9119335
Filing Date: 2015-08-25
Classification: H05K,Y10T

Abstract:
1. A method for manufacturing a rigid-flexible multilayer wiring board, comprising: a step of providing a first thermoplastic resin sheet; a step of forming a release layer from a resin material having a higher melting point than that of a material of the first thermoplastic resin sheet such that the release layer covers a flexible portion forming region of a principal surface of the first thermoplastic resin sheet; a step of conducting surface modification on the principal surface of the first thermoplastic resin sheet while using the release layer as a mask; a step of laminating a second thermoplastic resin sheet on the principal surface of the first thermoplastic resin sheet such that the second thermoplastic resin sheet covers the release layer to form a laminate including the first and second thermoplastic resin sheets; a step of press-bonding the laminate; a step of forming a cut in the laminate from at least either one of upper and lower surfaces of the laminate toward an outline of the release layer when seen in a plan view, the cut being formed along the outline of the release layer; and a step of removing a portion of the laminate including the release layer surrounded by the cut.