Patent ID: 7842550
Filing Date: 2010-11-30
Classification: H01L

Abstract:
1. A method of fabricating a quad flat non-leaded package, comprising: forming a patterned conductive layer on a sacrificial layer, wherein the patterned conductive layer comprises a plurality of lead sets constituted by leads; attaching a plurality of chips to the sacrificial layer, wherein each of the chips is surrounded by said one of the lead sets, respectively; electrically connecting each of the chips to one of the lead sets; forming a molding compound on the sacrificial layer, the molding compound covering the patterned conductive layer and the chips; cutting and singulating the molding compound and the patterned conductive layer and partially cutting the sacrificial layer to form a plurality of recesses on the sacrificial layer; attaching a transferring substrate on the cut and singulated molding compound; removing the sacrificial layer; and removing the transferring substrate from the cut and singulated molding compound.