Patent ID: 6882544
Filing Date: 2005-04-19
Classification: H01L,H05K,Y10T

Abstract:
1. A printed circuit board comprising: a metal sheet having a surface partially or totally roughed; a dielectric film for a capacitor covering at least the roughed surface of said metal sheet; a first electrically conductive layer covering the surface of said dielectric film for the capacitor; a second electrically conductive layer formed on the surface of said first electrically conductive layer and electrically connected to an electrode of a first via for electrical connection to said first electrically conductive layer; and a resin layer provided for encapsulating an assembly made up by said metal sheet, dielectric film, the first electrically conductive layer and the second electrically conductive layer; said first via for connection being formed on boring through said resin layer until reaching said second electrically conductive layer, said first via for connection including a first electrode of a conductive member deposited therein; and a second via for electrical connection to said metal sheet not being provided with said dielectric film for the capacitor, nor with said first electrically conductive layer, nor with said second electrically conductive layer, on said metal sheet in said second via for electrical connection to said metal sheet, said second via for connection extending throughout said resin layer until reaching said metal sheet; said second via for connection including a second electrode of an electrically conductive member deposited therein; said second electrode being electrically insulated from said first electrically conductive layer by an insulating member provided between said second electrode and said first electrically conductive layer.