Patent ID: 8022310

Claim:
A multilayer wiring board comprising n (n is an integer of at least 4) wiring layers including an insulating resin and a wire made of a conductive material, and (n−1) resin base material layers including an insulating resin and a fiber bundle impregnated with said insulating resin, said n wiring layers and said (n−1) resin base material layers being laminated in an alternately layered manner, wherein at least one of said (n−1) resin base material layers has a fiber bundle content different from that of a rest of said (n−1) resin base material layers, and wherein said n wiring layers are stacked so that a first wiring layer to a n th wiring layer are stacked in this order and the (n−1) resin base material layers are stacked so that a first resin base material layer to a (n−1) th resin base material layer are stacked in this order, the first wiring layer is adjacent to the first resin base material layer and the n th wiring layer is adjacent to the (n−1) th resin base material layer.