Soldering method and soldering structure of electronic component
    6.
    发明专利
    Soldering method and soldering structure of electronic component 有权
    电子元件的焊接方法和焊接结构

    公开(公告)号:JP2007134476A

    公开(公告)日:2007-05-31

    申请号:JP2005325707

    申请日:2005-11-10

    Abstract: PROBLEM TO BE SOLVED: To provide a soldering method of electronic components and a soldering structure of electronic components, wherein a solder jointing property and an insulating property keep a good balance in ensuring them. SOLUTION: A metal powder 8 is mixed with a flux to be used by being interposed between a bump and an electrode when electronic parts are soldered for the purpose of attaining an effect of introducing a melted solder upon a reflow. The metal powder 8 has a core 8a made of a metal which melts at a higher temperature than a liquid phase temperature of a solder comprising a solder bump, and a surface 8b which has a good wettability with respect to the melted solder and is made of a metal which is melted and solidified in the melted core 8a, to be shaped in a thin piece condition or a limb-like condition. In a heating process by a reflow, the metal powders which remain in the flux without being entrapped by a solder part are melted and solidified to form a substantially spherical metal particle 18. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:为了提供电子部件的焊接方法和电子部件的焊接结构,其中焊接接合性和绝缘性保持良好的平衡。 解决方案:为了达到在回流时引入熔化的焊料的效果,将金属粉末8与电子部件焊接时,通过插入在凸块和电极之间而与待使用的焊剂混合。 金属粉末8具有由金属制成的芯部8a,其在比包含焊料凸块的焊料的液相温度更高的温度下熔化,并且具有相对于熔融焊料具有良好润湿性的表面8b,并且由 在熔融芯8a中熔融固化的金属成形为薄片状或肢状状。 在通过回流的加热过程中,残留在助熔剂中而不被焊料部分夹带的金属粉末被熔化并固化以形成基本上球形的金属颗粒18.版权所有(C)2007,JPO&INPIT

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