Patent ID: 7781259
Filing Date: 2010-08-24
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device including a rigid substrate on which one or more semiconductor elements are supported, comprising the steps of: providing an encapsulation mold having an upper mold and a lower mold for clamping the rigid substrate between the upper mold and the lower mold at a time of resin encapsulation, so that the lower mold has a void at a vent end portion of the lower mold corresponding to a vent-end edge portion of the substrate; disposing the substrate in the encapsulation mold; and injecting resin into a cavity between the upper mold and the substrate to encapsulate the semiconductor elements with the resin; wherein the vent-end portion of the lower mold is cut off to form the void beneath the substrate at a position corresponding to the vent-end edge portion of the substrate.