Printed circuit board and method for fabricating the same
    4.
    发明申请
    Printed circuit board and method for fabricating the same 有权
    印刷电路板及其制造方法

    公开(公告)号:US20040262033A1

    公开(公告)日:2004-12-30

    申请号:US10831247

    申请日:2004-04-23

    Abstract: A printed circuit board and a method for fabricating the same is provided. A substrate having a core layer and a plurality of pairs of bond pads thereon is prepared with at least one opening formed on the core layer between each pair of the bond pads. A solder mask layer covers the core layer and fills the openings, with recessed portions formed at positions of the solder mask layer on the openings during curing of the solder mask layer. When a small passive component is mounted on the printed circuit board, a space is formed between the bottom of the passive component and the recessed portions of the solder mask layer. An encapsulating resin can flow into the space to form an insulating barrier between the bond pads to prevent bridging between the bond pads and short circuiting of the passive component.

    Abstract translation: 提供一种印刷电路板及其制造方法。 制备具有芯层和其上的多对接合焊盘的衬底,其中在每对接合焊盘之间的芯层上形成有至少一个开口。 焊接掩模层覆盖芯层并填充开口,其中凹陷部分形成在焊料掩模层固化期间在开口上的焊料掩模层的位置处。 当将小的无源部件安装在印刷电路板上时,在无源部件的底部和焊料掩模层的凹部之间形成空间。 封装树脂可以流入空间,以在接合焊盘之间形成绝缘屏障,以防止接合焊盘之间的桥接和无源部件的短路。

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