Patent ID: 8530752
Filing Date: 2013-09-10
Classification: H01L,H05K,Y10T

Abstract:
1. A method for manufacturing a multilayer circuit board, comprising: a first step of immobilizing a first core layer with a first support substrate, the first core layer being formed to have a single-layered thickness of 100 μm or smaller and being made of a core material impregnated with resin, prior to performing the following steps; a second step of forming at least one resin layer on the first core layer, in which wiring patterns are embedded in the resin layer; and a third step of forming a second core layer to have a single-layered thickness of 100 μm or smaller and being made of a core material impregnated with resin, the second core layer being formed on the resin layer and opposing the first core layer.