Patent ID: 8835300
Filing Date: 2014-09-16
Classification: C23C,H01L

Abstract:
1. A method for inhibiting growth of intermetallic compounds, comprising the steps of: (i) preparing a substrate element, including: (i-1) depositing at least one layer of metal pad on a substrate; (i-2) depositing at least one thin solder layer onto the layer of metal pad, and then performing a heat treatment to obtain the substrate element; and depositing a bump of solder on the substrate element; and (ii) performing a following bonding process with the substrate element and other elements; wherein a thin intermetallic compound is formed by the reaction of the thin solder layer and the metal in the metal pad after the heat treatment of the thin solder layer prior to a flip-chip bonding process, and the thin solder layer is completely reacted into the thin intermetallic compound.