Patent ID: 8867227
Filing Date: 2014-10-21
Classification: H01L

Abstract:
1. An electronic component mounted on a circuit board comprising: a substrate; a semiconductor chip fixed on the substrate by a first binder; and an encapsulation resin for encapsulating the substrate and the semiconductor chip, wherein the substrate includes a through hole running through the substrate from a portion of a principal surface of the substrate where the first binder is present toward a side surface of the substrate, the substrate includes a lower substrate, at least one middle substrate formed on the lower substrate, and an upper substrate formed on an uppermost one of the at least one middle substrate, the through hole includes a first hole portion, and a second hole portion one end of which is connected to the first hole portion, the first hole portion runs through the upper substrate, the second hole portion is provided in one of the at least one middle substrate, and an open end thereof is at a side surface of the one of the at least one middle substrate, and the first binder is exposed to ambient air via the through hole.