Patent ID: 7676913

Claim:
A method of manufacturing a wiring board, comprising steps of: providing a substrate; forming a first wiring layer on the substrate by photolithography; forming a first insulating layer by ink jetting so as to cover a part of the first wiring layer and expose an exposed section of the first wiring layer; forming a second wiring layer by ink jetting partly over the first wiring layer, with the first insulating layer being between the part of the first wiring layer and a part of the second wiring layer; forming a second insulating layer by ink jetting so as to cover at least a part of the second wiring layer and expose an exposed section of the second wiring layer; and forming a third wiring layer by ink jetting partly over the second wiring layer, with the second insulating layer being between the part of the second wiring layer and a part of the third wiring layer, the step of forming the first insulating layer including steps of forming a first-tier insulating layer by ink jetting so that an upper surface of the first-tier insulating layer is on the same level with an upper surface of the first wiring layer, and forming a second-tier insulating layer by ink jetting so as to cover at least a part of the first wiring layer and the first-tier insulating layer, so that the second-tier insulating layer is between the second wiring layer and the first wiring layer or the first-tier insulating layer.