Patent ID: 8610001

Claim:
A printed wiring board, comprising: an insulation layer; a conductive circuit on the insulation layer; an outermost interlayer resin insulation layer formed on the insulation layer and the conductive circuit and having a via-conductor opening connected to the conductive circuit; a land structure comprising a first land formed on the outermost interlayer resin insulation layer around the via-conductor opening and a second land formed on the outermost interlayer resin insulation layer surrounding the first land; and a via conductor formed in the via-conductor opening through the outermost interlayer resin insulation layer such that the first land of the land structure on the outermost interlayer resin insulation layer is connected to the conductive circuit on the insulation layer, wherein the land structure has a space between the first land and second land of the land structure, the first land of the land structure is directly connected to the via conductor, the first land of the land structure comprises a first portion of a plated film, the second land of the land structure comprises a second portion of the plated film, and the via conductor comprises a third portion of the plated film filling the via-conductor opening through the outermost interlayer resin insulation layer.