Patent ID: 6610560
Filing Date: 2003-08-26
Classification: H01L

Abstract:
A method for fabricating a multi-chip module, comprising the steps of:(1) preparing a substrate and at least three semiconductor chips, including a first semiconductor chip, a second semiconductor chip, and a third semiconductor chip; wherein the substrate having a front surface and a back surface; while the first semiconductor chip, the second semiconductor chip, and the third semiconductor chip each having an active surface and an inactive surface; (2) mounting the second semiconductor chip and the third semiconductor chip over the first chip through COC technology, wherein a side gap of an empirically-predetermined width through a molded-underfill simulation experiment is left between the second semiconductor chip and the third semiconductor chip; and (3) mounting the first semiconductor chip on the substrate and electrically coupled to the substrate through wire-bonding technology; (4) performing a molding process, wherein the substrate is fixed in a molding tool having a mold injection inlet and an air outlet, with the air outlet of the molding tool being aligned to the side gap between the second semiconductor chip and the third semiconductor chip; and then a molding material is injected into the molding tool through the mold injection inlet for the purpose of forming an encapsulation body to encapsulate the first semiconductor chip, the second semiconductor chip, and the third semiconductor chip; the encapsulation body including a molded underfill layer in the flip-chip undergaps of the second semiconductor chip and the third semiconductor chip.