Patent ID: 8970052
Filing Date: 2015-03-03
Classification: H01L

Abstract:
1. A device comprising: a substrate including first and second electrodes; a first semiconductor chip including a first surface, a second surface opposite to the first surface and a first bonding pad formed on the first surface, the first semiconductor chip being mounted over the substrate so that the second surface faces the substrate; a first retaining member provided on the first surface of the first semiconductor chip, the first retaining member being arranged between the first electrode and the first bonding pad with a first width, the first retaining member including a top surface; a first bonding wire electrically coupling the first electrode of the substrate to the first bonding pad of the first semiconductor chip, a part of the first bonding wire being in contact with the top surface of the first retaining member, a second semiconductor chip including a third surface, a fourth surface opposite to the third surface and a second bonding pad firmed on the third surface, the second semiconductor chip being stacked over the first semiconductor chip so that the fburth surface faces the first semiconductor chip; a second retaining member provided on the third surface of the second semiconductor chip, the second retaining member being arranged between the second electrode and the second bonding pad with a second width that is smaller than the first width; and a second bonding wire electrically coupling the second electrode of the substrate to the second bonding pad of the second semiconductor chip, a part of the second bonding wire is embedded in the second retaining member.