Method for inhibiting growth of intermetallic compound
    8.
    发明专利
    Method for inhibiting growth of intermetallic compound 有权
    抑制络合物生长的方法

    公开(公告)号:JP2013038418A

    公开(公告)日:2013-02-21

    申请号:JP2012163896

    申请日:2012-07-24

    摘要: PROBLEM TO BE SOLVED: To provide a method for controlling the growth of an intermetallic compound formed by a rapid reaction of a solder and Cu prior to a bonding process and inhibiting the growth of the intermetallic compound after the bonding process.SOLUTION: A method for inhibiting the growth of an intermetallic compound includes: (i) a step of preparing a substrate element including a substrate including at least one layer of metal pad deposited thereon, in which at least one thin layer of solder is deposited onto the layer of a metal pad and then a reflow process is performed; and (ii) a step of further depositing a bump of solder with an appropriate thickness on the substrate element. In the method, a thin intermetallic compound is formed by the reaction of the thin solder layer and the metal in the metal pad after appropriate heat treatment to the thin solder layer. By the formation of a thin intermetallic compound, the growth of the intermetallic compound can be slowed and the transformation of the intermetallic compound can be prevented.

    摘要翻译: 要解决的问题:提供一种控制在焊接过程之前通过焊料和Cu的快速反应形成的金属间化合物的生长的方法,并且在接合工艺之后抑制金属间化合物的生长。 解决方案:用于抑制金属间化合物生长的方法包括:(i)制备包括其上沉积有至少一层金属焊盘的衬底的衬底元件的步骤,其中至少一层焊料薄层 沉积在金属焊盘的层上,然后进行回流处理; 和(ii)在衬底元件上进一步沉积具有适当厚度的焊料凸点的步骤。 在该方法中,通过在对薄焊料层进行适当的热处理之后,通过薄焊料层和金属焊盘中的金属的反应形成薄的金属间化合物。 通过形成薄的金属间化合物,可以减缓金属间化合物的生长,并且可以防止金属间化合物的转变。 版权所有(C)2013,JPO&INPIT