Patent ID: 9362206
Filing Date: 2016-06-07
CPC Classification: H01L

Claim Text:
1. A column structure extending vertically from a semiconductor device for connecting to a carrier, comprising: a pillar part having a first dimension and a second dimension; and a top part disposed on the pillar part; wherein the first dimension is longer than the second dimension, the pillar part comprises materials that will not melt under a pre-determined temperature, and the top part comprises materials that will melt under the pre-determined temperature; and wherein the pillar part is formed on a bonding pad, and an underbump metallization (UBM) layer is connected between the bonding pad and the pillar part, the bonding pad having a geometric center and a contacting surface for contacting the UBM layer, the geometric center of the bonding pad being vertically unaligned with the center of the pillar part, and the contacting center of the contacting surface being vertically aligned with the geometric center of the bonding pad.