Patent ID: 8331102
Filing Date: 2012-12-11
Classification: H01G,H01L,H05K,Y02P

Abstract:
1. A printed wiring board, comprising: a substrate having a penetrating opening; and a chip capacitor device positioned in the penetrating opening of the substrate and comprising a dielectric body having a surface, a plurality of conductive films formed within the dielectric body and extending in parallel to the surface of the dielectric body, a first electrode structure formed on the dielectric body and having a via connection portion for connecting to a first via conductor, the via connection portion of the first electrode structure being formed on the surface of the dielectric body and having a via connecting surface extending along the surface of the dielectric body, and a second electrode structure formed on the dielectric body such that the dielectric body is interposed between the first electrode structure and the second electrode structure, the second electrode structure having a via connection portion for connecting to a second via conductor, the via connection portion of the second electrode structure formed on the surface of the dielectric body and having a via connecting surface extending along the surface of the dielectric body, wherein the chip capacitor device having a thickness which is substantially equal to a thickness of the substrate, the first electrode structure comprises a first electrode and an outermost contact surface layer, the outermost contact surface layer of the first electrode structure is covering the first electrode and comprises a metal film, the second electrode structure comprises a second electrode and an outermost contact surface layer, the outermost contact surface layer of the second electrode structure is covering the second electrode and comprises a metal film, and the plurality of conductive films includes a conductive film connected to the first electrode structure and a conductive film connected to the second electrode structure.