Method of manufacturing multilayer wiring board
    22.
    发明申请
    Method of manufacturing multilayer wiring board 有权
    多层布线板的制造方法

    公开(公告)号:US20080184555A1

    公开(公告)日:2008-08-07

    申请号:US12068270

    申请日:2008-02-05

    Abstract: First, a plurality of wiring boards are fabricated at separate steps. The first wiring board includes a Cu post formed on a wiring layer on one surface of a substrate, and a first stopper layer formed at a desired position around the Cu post. The second wiring board includes a through hole for insertion of the Cu post therethrough, a connection terminal formed on a wiring layer on one surface of a substrate, and a second stopper layer that engages the first stopper layer and functions to suppress in-plane misalignment. The third wiring board includes a connection terminal formed on a wiring layer on one surface of a substrate. Then, the wiring boards are stacked up, as aligned with one another so that the wiring layers are interconnected via the Cu post and the connection terminals, to thereby electrically connect the wiring boards. Thereafter, resin is filled into gaps between the wiring boards.

    Abstract translation: 首先,以分开的步骤制造多个布线板。 第一布线板包括形成在基板的一个表面上的布线层上的Cu柱和形成在Cu柱周围的期望位置的第一阻挡层。 第二布线板包括用于插入Cu柱的通孔,形成在基板的一个表面上的布线层上的连接端子和与第一阻挡层接合并用于抑制面内未对准的功能的第二阻挡层 。 第三布线板包括形成在基板的一个表面上的布线层上的连接端子。 然后,将布线基板彼此对准地堆叠起来,使得布线层经由铜柱和连接端子互连,从而电连接布线板。 此后,将树脂填充到布线板之间的间隙中。

    Conductive ball, formation method for electrode of electronic component, electronic component and electronic equipment
    30.
    发明申请
    Conductive ball, formation method for electrode of electronic component, electronic component and electronic equipment 审中-公开
    导电球,电子部件电极的形成方法,电子部件和电子设备

    公开(公告)号:US20070084904A1

    公开(公告)日:2007-04-19

    申请号:US10557698

    申请日:2004-05-24

    Abstract: A conductive ball is formed by coating a generally spherical-shaped core made of a non-metallic material with a coating layer composed of a Cu layer and an Sn-5.5Ag alloy layer of non-eutectic composition. The conductive ball is disposed on a land of an electronic component via flux and reflown at heating temperatures whose peak temperatures reach 250 to 260° C. The Sn-5.5Ag alloy of non-eutectic composition is put in the state in which a solidus portion and a liquidus portion coexist to keep flowability relatively small. The conductive ball is fixed on the land without exposing an SnCu layer formed on the Cu layer. An electrode is formed without exposing the SnCu layer having relatively poor solder wettability. Between the electronic component and a circuit board, a joint section having a good electric conduction property and mechanical strength may be formed.

    Abstract translation: 通过涂覆由非金属材料制成的大致球形的芯由具有Cu层和非共晶组成的Sn-5.5Ag合金层的涂层形成导电球。 导电球通过焊剂置于电子部件的焊盘上,并在峰值温度达到250〜260℃的加热温度下进行退火。将非共晶组合物的Sn-5.5Ag合金置于固体部分 并且液相部分共存以保持流动性相对较小。 导电球固定在焊盘上,而不暴露形成在Cu层上的SnCu层。 形成电极,而不会使焊锡润湿性差的SnCu层露出。 在电子部件与电路基板之间,可以形成具有良好的导电性和机械强度的接合部。

Patent Agency Ranking