In this paper, a low cost flip chip interconnection is introduced, which electrolessNi as the under bump metallurgy (UBM), deposits solder paste using stencil printing, and reflowsthe paste to form solder bumps.
回顾了低成本制备芯片上焊料凸点的方法,即化学镀镍制备凸点下金属层、模版印刷焊料,最后回流形成焊料凸点,并综述了该方法的最新研究进展。
