Abstract:
Methods of fabricating a package-on-package device and package-on-package devices fabricated by the same may be provided. According to inventive concepts, a back-grinding of a semiconductor chip to a target thickness may be performed after the semiconductor chip is molded by a molding layer. Accordingly, the semiconductor chip is relatively thick while forming a molding layer, and thus less susceptible to a warpage phenomenon, which for instance may occur during the forming a molding layer. Thus, relatively thin package-on-package device, which is less susceptible to the warpage phenomenon, may be achieved.
Abstract:
A printed circuit board (PCB) for molded underfill (MUF) and a PCB molding structure that may expand a range of applying the PCB and may resolve a problem of generation of a void during manufacturing of a semiconductor package. The PCB includes: a molding area on which a plurality of semiconductor chips are mounted and that is sealed; and a peripheral area that is formed around the molding area, contacts a mold for molding during a molding process, and includes a first side adjacent to a portion into which a molding material is injected and a second side that faces the first side that is adjacent to a portion from which air may be discharged, wherein an active area where the semiconductor chips are disposed in the molding area is disposed nearer the first side than to the second side.