Patent ID: 8015700

Claim:
A method of fabricating a wiring board comprising: a first step of forming a first solder resist layer on a support board; a second step of forming a first opening portion through said first solder resist layer by removing a portion of the first solder resist layer so as to expose a portion of the support board that had the first solder resist layer formed thereon; a third step of forming a first electrode within the first opening portion by forming the first electrode directly on the portion of the support board exposed from the first opening portion by electrolytic plating; a fourth step of forming an insulating layer on the first electrode and the first solder resist layer, and forming a wiring portion electrically connected to the first electrode at the insulating layer; a fifth step of forming a second solder resist layer having a second opening portion on the wiring portion; and a sixth step of removing the support board so as to expose a surface of the first electrode through a surface of the first solder resist layer from which the support board is removed.