Patent ID: 9496235
Filing Date: 2016-11-15
CPC Classification: H01L

Claim Text:
1. A method of manufacturing a semiconductor device, the method comprising: forming a first conductive pillar with one or more trenches over a substrate, the one or more trenches having a longitudinal axis that is perpendicular to the substrate; disposing conductive material into the one or more trenches of the first conductive pillar; after disposing conductive material into the one or more trenches, placing a second conductive pillar in contact with the conductive material; and after placing the second conductive pillar, reflowing the conductive material to bond the second conductive pillar to the first conductive pillar using the conductive material, wherein the reflowing causes a portion of the conductive material within the one or more trenches to flow toward the second conductive pillar, wherein the conductive material self-aligns the first conductive pillar to the second conductive pillar.