Solder ball loading mask, apparatus and associated methodology
    8.
    发明授权
    Solder ball loading mask, apparatus and associated methodology 有权
    焊球加载掩模,仪器和相关方法

    公开(公告)号:US08448838B2

    公开(公告)日:2013-05-28

    申请号:US13315972

    申请日:2011-12-09

    IPC分类号: B23K1/00 B23K1/20

    摘要: A solder ball loading method capable of securely loading solder balls on connection pads includes applying flux on each connection pad group of a printed wiring board flux is not applied to a contact portion between a spacer and the printed wiring board to keep the flux from attaching to the spacer. Because the flux is not attached to the spacer, when the mask is detached from the printed wiring board, the printed wiring board need not be inverted, and damage to the solder resist layer 70 is minimized. Further, the heights of the solder balls and the upper surface of the mask are made equal by using the spacer, making it possible to securely load the solder balls on the electrode pads, one solder ball for each connection pad, and to reduce a probability that solder balls are not loaded or that a plurality of the solder balls are loaded onto a single connection pad.

    摘要翻译: 能够将焊球牢固地装载在连接焊盘上的焊球加载方法包括在印刷电路板的每个连接焊盘组上施加焊剂,焊剂不会施加到间隔件和印刷电路板之间的接触部分,以保持焊剂附着到 间隔物。 由于焊剂没有附着到间隔物上,当掩模与印刷电路板分离时,印刷电路板不需要颠倒,并且使阻焊层70的损坏最小化。 此外,通过使用间隔件使焊球的高度和掩模的上表面相等,使得可以将焊球牢固地加载在电极焊盘上,每个连接焊盘用一个焊球,并且降低概率 该焊球没有被加载,或者多个焊球被加载到单个连接焊盘上。