Patent ID: 8105932
Filing Date: 2012-01-31
Classification: H01L

Abstract:
1. A method to assemble a semiconductor package comprising: providing a lead frame including a die pad, a plurality of first leadfingers and a plurality of second leadfingers; depositing a landing pad on an inner portion of each first leadfinger and each second leadfinger; attaching a semiconductor chip, including integrated circuits and a plurality of chip contact pads on its upper active surface, to the die pad; forming a first electrically conducting structure on top of the landing pad on each second leadfinger, the first electrically conducting structure comprising one of a wedge structure, a bump structure, and a ball structure formed using one of a wedge-bonding technique and a ball-bonding technique; forming first bond connections between the chip contact pads and landing pads of the plurality of first leadfingers with first bond wires; forming second bond connections between the chip contact pads and first electrically conducting structures of the plurality of second leadfingers with second bond wires, wherein the second bond wires are attached to the first electrically conducting structures by one of a wedge bond and a ball bond formed on top of the first electrically conducting structures; and encapsulating the semiconductor chip, the first and second bond wires and inner ends of leadfingers in a plastic mould material, wherein the wedge structure has an approximately rectangular longitudinal cross-section and is formed on the landing pad of the second leadfinger such that a longitudinal dimension of the wedge structure is approximately parallel to the length of the second leadfinger.