Patent ID: 7808096

Claim:
A semiconductor package comprising a plurality of leads for transmission/reception of a signal between a semiconductor chip and an external device and a seal for sealing at least part of the plurality of leads, wherein: part of the seal which surrounds each of the leads includes a lower seal portion present under a lower surface of the lead, an upper seal portion present over an upper surface of the lead, part of the upper seal portion overhanging outward beyond the lower seal portion, and a lead side portion present between the lower seal portion and the upper seal portion, the lead side portion filling a gap between the leads; each of the leads has an outer lead protruding out of the seal and an inner lead buried in the seal; and an outer surface of the lead side portion which exists right below the part of the upper seal portion overhanging outward beyond the lower seal portion is slanted inwardly along a downward direction from a lowermost part of an outer surface of the upper seal portion.