Printed circuit board and method for fabricating the same
    1.
    发明授权
    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:US07205485B2

    公开(公告)日:2007-04-17

    申请号:US10831247

    申请日:2004-04-23

    IPC分类号: H05K1/16

    摘要: 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.

    摘要翻译: 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。

    Semiconductor package with chip supporting member
    6.
    发明授权
    Semiconductor package with chip supporting member 失效
    半导体封装带芯片支撑件

    公开(公告)号:US06737737B1

    公开(公告)日:2004-05-18

    申请号:US10355610

    申请日:2003-01-31

    IPC分类号: H01L23495

    摘要: A semiconductor package with a chip supporting member is provided, including a lead frame having a die pad and a plurality of leads, and a chip supporting member mounted on a central portion of the die pad. The chip supporting member has a first surface and an opposing second surface attached to the die pad. At least a chip is mounted on the first surface of the chip supporting member to space the chip apart from the die pad via the chip supporting member, so as to prevent the chip from being damaged by thermal stress induced by CTE (coefficient of thermal expansion) mismatch between the chip and lead frame, thereby eliminating delamination, warpage and chip cracks. Moreover, the chip supporting member interposed between the chip and die pad provides greater flexibility for mounting variously sized or shaped chips on the die pad without having to use chips corresponding to profile of the die pad.

    摘要翻译: 提供一种具有芯片支撑构件的半导体封装,包括具有管芯焊盘和多个引线的引线框架,以及安装在管芯焊盘的中心部分的芯片支撑构件。 芯片支撑构件具有附接到管芯焊盘的第一表面和相对的第二表面。 至少芯片安装在芯片支撑部件的第一表面上,以通过芯片支撑部件将芯片与芯片焊盘隔开,以防止芯片被CTE引起的热应力(热膨胀系数 )芯片和引线框架之间的不匹配,从而消除分层,翘曲和芯片裂纹。 此外,插入在芯片和芯片焊盘之间的芯片支撑构件提供了更大的灵活性,用于在芯片焊盘上安装各种尺寸或形状的芯片,而不必使用对应于芯片焊盘轮廓的芯片。