Patent ID: 8921159

Claim:
A method of manufacturing integrated circuit (IC) devices, the method comprising the steps of: providing a first lead frame that comprises one or more openings each comprising a plurality of shaped notches; placing with a pick-and-place machine a first die in at least one of the one or more openings; placing a second lead frame over the first lead frame, the second lead frame comprising one or more first partial dam bars each comprising a first shaped tip that fits into a first shaped notch of the first lead frame; and placing a third lead frame over the second lead frame, the third lead frame comprising one or more second partial dam bars each comprising a second shaped tip that fits into a second shaped notch of the first lead frame; wherein each of the one or more openings of the first lead frame and the respective first and second partial dam bars of the second and third lead frames cooperate to form a continuous dam completely encircling the die within the respective opening.