Patent ID: 8946883
Filing Date: 2015-02-03
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor die and a transparent fiducial die both encapsulated in a molding compound resin; an upper passivation layer on an upper surface of the molding compound resin except where an upper redistribution layer is formed on the upper surface of the molding compound resin; a lower passivation layer on a lower surface of the molding compound resin except where a lower redistribution layer is formed on the lower surface of the molding compound resin; a metal pattern on a lower surface of the transparent fiducial die that is visible through an exposed upper surface of the transparent fiducial die; and a through mold via formed in the mold compound resin utilizing laser drilling recognizing the metal pattern as a standard coordinate, wherein said through mold via extends from the upper surface to the lower surface of the molding compound resin for electrically coupling the upper redistribution layer to the lower redistribution layer.