Patent ID: 7755175
Filing Date: 2010-07-13
Classification: H01L

Abstract:
1. A stack-type semiconductor device, comprising: a plurality of inner leads with bonding pads, including respective first inner circuit board leads and second inner circuit board leads, the first inner circuit board leads having ends extended in a first direction and the first and second inner circuit board leads being divided in a second direction orthogonal to the first direction so that forefronts of the second inner circuit board leads are arranged around a center in the second direction and forefronts of the first inner circuit board leads are arranged outside in the second direction; a plurality of outer leads which are continued from the corresponding ones of the plurality of inner leads; a first semiconductor chip which is mounted on the plurality of inner leads via a filmy insulating adhesive and includes first electrode pads along one side of a first element forming surface thereof so as to constitute a one-sided pad structured semiconductor chip; and a second semiconductor chip which is mounted stepwise on the first semiconductor chip, has the same size as the first semiconductor chip and includes second electrode pads along one side of a second element forming surface thereof in the same side of the one side of the first element forming surface so as to constitute another one-sided pad structured semiconductor chip; a plurality of bonding wires sequentially connecting the bonding pads, the first electrode pads and the second electrode pads as a whole; and a sealing resin for sealing the first semiconductor chip, the second semiconductor chip and the bonding wires.