Patent ID: 9721916
Date: 2017-08-01
CPC Classifications: H01L

Claim:
1. A method comprising: forming an Under-Bump Metallurgy (UBM) layer; forming a first non-solder metallic bump over the UBM layer, wherein the first non-solder metallic bump is a solid bump; forming a second non-solder metallic bump over the UBM layer, wherein the second non-solder metallic bump forms a ring with an opening therein; forming a first solder region overlapping the first non-solder metallic bump; forming a second solder region overlapping the second non-solder metallic bump, wherein the second solder region encircles the opening; removing portions of the UBM layer misaligned from the first non-solder metallic bump and the second non-solder metallic bump; and reflowing the first solder region and the second solder region to form a third solder region and a fourth solder region, respectively.