Patent ID: 7883614
Filing Date: 2011-02-08
Classification: H05K

Abstract:
1. A method of manufacturing an electronic part comprising a conductor film, a lower conductor layer, and an insulating member sandwiched between the conductor film and the lower conductor layer, for connecting the conductor film and the lower conductor layer by conductor portions and growing metal plating on the conductor portions and the conductor film, the method comprising: forming a plurality of opening holes, each having said lower conductor layer as bottoms, through the conductor film and the insulating member from said conductor film side; growing metal plating layers, as conductor portions from each of the bottoms of said opening holes, from said lower conductor layer as an electrode; and growing the metal plating layers on upper surfaces of said conductor film and said conductor portions with said conductor film and said metal plating layers as electrodes after said conductor portions are formed in the respective plurality of opening holes by growing said metal plating layers so as to contact said metal plating layers with said conductor film located on an upper surface of the insulating member, and to increase area for growing said metal plating layers and reduce current density per unit in said metal plating layers, so as to lower growing speed of said metal plating layers, to thereby form said conductor portions in said opening holes by using the conductor film as a stopper, and forming a thickness enough to form an upper conductor layer, wherein the metal plating layers are grown from each of the bottoms of said opening holes, and on the upper surfaces of said conductor film and said conductor portions, without electroless plating being carried out.