Patent ID: 9711707
Date: 2017-07-18
CPC Classifications: H01L,H03H,Y10T

Claim:
1. A method for manufacturing an electronic device including providing an insulating base substrate having a first surface opposite a second surface; forming a through electrode in the insulating base substrate, the through electrode comprising a metal body filling a through-hole of the insulating base substrate, such that the metal body has an end face having flat surface and continuous with at least the second surface of the insulating base substrate; mounting an electronic element on the first surface of the insulating base substrate; bonding a cover body accommodating the electronic element therein to the insulating base substrate; forming a conductive film on the second surface of the insulating base substrate and on the end face of the through electrode exposed on the second surface; forming an electrode pattern by leaving a portion of the conductive film on the end face of the through electrode and on the second surface at a periphery of the end face of the through electrode; and forming an external electrode by accumulating an electroless plated film on a top surface and a side surface of the of the electrode pattern by an electroless plating method; and forming a metal film on the surface of the electroless plated film.