Patent ID: 7763958

Claim:
A leadframe panel suitable for use in packaging integrated circuit dice, the leadframe panel comprising: a two-dimensional array of device areas arranged in a plurality of columns, each column including a plurality of immediately adjacent device areas, each device area configured for use in a semiconductor die power package, wherein each device area includes a plurality of leads and a non-rectangular shaped die attach pad that includes two opposed ends and two opposed sides in which a separation between the two opposed sides varies so that the two opposed sides are spaced farther apart from each other in a middle region than in a region proximate the two opposed ends; and a plurality of intermediate tie bars that extend substantially parallel to the columns of device areas between a pair of associated adjacent columns of device areas, wherein all of the leads and the die attach pads in each intermediate column of devices areas are carried only by a pair of associated intermediate tie bars such that all of the leads and die attach pads in each intermediate column are only supported by the intermediate tie bars free of any horizontal support bars; wherein each lead bends around one of the opposed ends of the die attach pad and proceeds in a peripheral region along a length of one of the opposed sides towards the middle region of the die attach pad with each lead including at least one bend to form an offset that maintains a desired minimum separation between the die attach pad and the lead along the length of each lead.