Patent ID: 8225503
Filing Date: 2012-07-24
Classification: H01L,H05K,Y10T

Abstract:
1. A method for manufacturing a board with a built-in electronic element, comprising: providing a support substrate comprising a support base and a metal foil; forming a protective film comprising a metal material on the metal foil of the support substrate; forming a conductive pattern comprising a metal material on the protective film by an additive method, said forming a conductive pattern comprising forming at least one of a through-hole land and a via land; forming at least one of a via hole and a through-hole through said protective film; forming at least one of a through-hole conductor and a via conductor simultaneously with said forming a conductive pattern placing an electronic element on the support substrate with the conductive pattern such that a surface of the electronic element where a circuit is formed faces the conductive pattern; covering the electronic element with an insulative resin; etching away the metal foil using a first etching solution such that the protective film is not dissolved by the first etching solution or that the protective film has an etching speed which is slower than an etching speed of the metal foil; and electrically connecting terminals of the electronic element and a part of the conductive pattern.