Patent ID: 7704548

Claim:
A method for manufacturing a wiring board, comprising: a preparation step of preparing a core board including a core main surface, a core rear surface, an accommodation hole opening at least at the core main surface side and a core board main surface side conductor disposed on the core main surface, and preparing an electronic component including a component main surface, a component rear surface and a component main surface side electrode disposed on the component main surface; a fixing step of fixing the electronic component to the core board by filling a gap between the electronic component and the core board with a resin filler; an insulating layer formation step of forming a lowermost resin insulating layer, which serves as a lowermost layer of a wiring laminated body, on the core main surface, the component main surface and the resin filler after the fixing step; an opening portion formation step of forming an opening portion exposing a part of the core board main surface side conductor and the component main surface side electrode by removing at least a portion of the lowermost resin insulating layer located directly above the gap; and a main surface side connecting conductor formation step of forming a main surface side connecting conductor in the opening portion and connecting the core board main surface side conductor to the component main surface side electrode.