Patent ID: 8178191

Claim:
A multilayer wiring board comprising: a core insulating layer comprising a thermosetting resin and a first conductive wiring, a first insulating layer comprising a thermoplastic liquid crystal polymer having a softening temperature lower than the core insulating layer, the first insulating layer being laminated on and contacting a surface of the first conductive wiring and a surface of the core insulating layer; a second insulating layer laminated on and contacting a surface of the first insulating layer, the second insulating layer comprising a second conductive wiring electrically connected to the first conductive wiring and further comprising a thermosetting resin having a softening temperature higher than the first insulating layer; an outmost insulating layer laminated on and contacting a surface of the second conductive wiring and a surface of the second insulating layer, the outmost insulating layer comprising a wiring pattern electrically connected to the first conductive wiring and electrically connected to the second conductive wiring; and a solder resist provided along an outer edge of the wiring pattern and provided along an outer edge of the outmost insulating layer, wherein the outmost insulating layer comprises a material which is the same as a material of the first insulating layer and further comprises a water-absorbing ratio lower than a water-absorbing ratio of the core insulating layer and lower than a water-absorbing ratio of the second insulating layer.