Semiconductor device including a heat-transmitting and electromagnetic-noise-blocking substance and method of manufacturing the same

Abstract

In a multi-chip package having vertically stacked semiconductor integrated circuits (chips), a heat transmitting conductive plate () can be interposed between a lower layer semiconductor chip () and an upper layer semiconductor chip () and connected to a ground wiring of a substrate () through a bonding wire (). A heating transmitting conductive plate () at the ground potential can block propagation of noise between the lower layer semiconductor chip () and upper layer semiconductor chip (). Thus, the addition of noise to signals of an analog circuit in the upper layer semiconductor chip () can be avoided, reducing noise induced malfunctions. Furthermore, heat generated by the lower layer semiconductor chip () and upper layer semiconductor chip () can be transmitted through contact points with the heat transmitting conductive plate () for dissipation therefrom. This can improve heat dissipating capabilities of the semiconductor device () contributing to more stable operation.