Electromagnetic interference shield for overmolded packaging of an electronic assembly

摘要

An overmolded electronic assembly 20 having an electromagnetic interference shield 50, in the form of a thin metal film or foil, coupled to the top of or within an overmolded body 33. The shield 50 effectively reduces the amount of electromagnetic interference ("EMI") emissions from penetrating within the assembly to the circuit board 22 without substantially increasing the cost of the unit. Thus, an electronic assembly having improved vibration, moisture, and EMI emission resistance is achieved as compared with traditional overmolded or metal assemblies. Further, because the shield 50 can be formed on the electronic assembly in one continuous processing step, a substantial savings in time and cost for the manufacturing process is also realized.