Patent ID: 8167524

Claim:
A semiconductor package handling system comprising: a package holder configured to receive and hold singulated semiconductor packages; a first inspection device arranged and configured to inspect a first surface of the packages while they are being held by the package holder; an offloading device configured to receive the packages from the package holder and to convey the packages to an offloader, wherein the offloading device comprises first and second offloading arms that are configured so that each offloading arm moves in a linear path between the package holder and the offloader, each offloading arm comprising a single row of offloading pick heads, each pick head being configured to hold one package and to convey the package to the offloader, the pick heads of the first and second offloading arms being arranged such that pick and place points of the pick heads lie along the same center line, the pick heads of the first offloading arm being arranged below the pick heads of the second offloading arm to prevent collision between the pick heads of the first offloading arm and the pick heads of the second offloading arm when each offloading arm moves in a linear path between the package holder and the offloader; and a second inspection device arranged and configured to inspect a second surface of the packages, which is opposite from the first surface, while they are being held by the offloading device, the first offloading arm being offset on a first side of the center line in plan view with the pick and place points of its offloading pick heads on the center line, and the second offloading arm being offset on a second side of the center line in plan view with the pick and place points of its offloading pick heads on the center line, the second side being opposite to the first side.