WAFER-LEVEL INTERCONNECT FOR HIGH MECHANICAL RELIABILITY APPLICATIONS

摘要

An interconnect structure comprises a solder including nickel (Ni) and tin (Sn), with the nickel in a range of 0.01 to 0.20 percent by weight. The interconnect structure further includes an intermetallic compound (IMC) layer in contact with the solder. The (IMC) layer comprises a compound of copper and nickel.