Patent ID: 8299616
Filing Date: 2012-10-30
Classification: H01L

Abstract:
1. A semiconductor structure comprising: a first substrate comprising a first conductive layer; a T-shaped post electrically coupled to the first conductive layer, the T-shaped post having an under-bump metallization (UBM) section in contact with the first conductive layer and a pillar section extending from the UBM section, the UBM section having a first width and the pillar section having a second width, the first width being greater than the second width; a second substrate having a second conductive layer; a solder material around the pillar section and in electrical contact with the first conductive layer and the second conductive layer; and an inter-metallic compound (IMC) layer interposed between the pillar section and the second conductive layer, the IMC layer extending continuously between the second conductive layer and the pillar section.