Interconnection process for module assembly and rework
    31.
    发明授权
    Interconnection process for module assembly and rework 有权
    模块组装和返工的互连过程

    公开(公告)号:US06574859B2

    公开(公告)日:2003-06-10

    申请号:US09785787

    申请日:2001-02-16

    Abstract: An interconnection structure and methods for making and detaching the same are presented for column and ball grid array (CGA and BGA) structures by using a transient solder paste on the electronic module side of the interconnection that includes fine metal powder additives to increase the melting point of the solder bond. The metal powder additives change the composition of the solder bond such that the transient melting solder composition does not completely melt at temperatures below +230° C. and detach from the electronic module during subsequent ref lows. A Pb—Sn eutectic with a lower melting point is used on the opposite end of the interconnection structure. In the first method a transient melting solder paste is applied to the I/O pad of an electronic module by means of a screening mask. Interconnect structures are then bonded to the I/O pad. In a second method, solder preforms in a composition of the transient melting solder paste are wetted onto electronic module I/O pads and interconnect columns or balls are then bonded. Detachment of an electronic module from a circuit card can then be performed by heating the circuit card assembly to a temperature above the eutectic solder melting point, but below the transient solder joint melting point.

    Abstract translation: 通过使用包括细金属粉末添加剂的电子模块侧的瞬态焊膏来提供柱和球栅阵列(CGA和BGA)结构的互连结构及其分离方法,以增加熔点 的焊点。 金属粉末添加剂改变焊料接合的组成,使得瞬态熔融焊料组合物在低于+ 230℃的温度下不会完全熔化,并且在后续参考低温期间与电子模块分离。 在互连结构的另一端使用具有较低熔点的Pb-Sn共晶体。在第一种方法中,通过掩模掩模将瞬态熔融焊膏施加到电子模块的I / O焊盘。 然后将互连结构结合到I / O焊盘。在第二种方法中,将瞬态熔融焊膏的组成中的焊料预成型件润湿到电子模块I / O焊盘上,然后连接互连柱或焊球。连接电子 然后可以通过将电路卡组件加热到高于共熔焊料熔点但低于瞬态焊点熔点的温度来执行电路卡的模块。

    Printed wiring board and method of manufacturing a printed wiring board
    32.
    发明申请
    Printed wiring board and method of manufacturing a printed wiring board 有权
    印刷电路板和制造印刷电路板的方法

    公开(公告)号:US20020086145A1

    公开(公告)日:2002-07-04

    申请号:US10024470

    申请日:2001-12-21

    Abstract: A heated and pressed printed wiring board is made by filling via holes formed in layers of insulating film of the wiring board with an interlayer conducting material. The insulating film is stacked with conductor patterns, and each conductor pattern closes a via hole. The interlayer conducting material forms a solid conducting material in the via holes after a heating a pressing procedure. The solid conducting material includes two types of conducting materials. The first type of conducting material includes a metal, and the second type of conductive material includes an alloy formed by the metal and conductor metal of the conductor patterns. The conductor patterns are electrically connected reliably without relying on mere mechanical contact.

    Abstract translation: 通过用层间导电材料填充形成在布线板的绝缘膜层上的孔,制成加压印刷线路板。 绝缘膜与导体图案堆叠,并且每个导体图案封闭通孔。 夹层导电材料在加压压制程序后在通孔中形成固体导电材料。 固体导电材料包括两种类型的导电材料。 第一类导电材料包括金属,第二类导电材料包括由导体图案的金属和导体金属形成的合金。 导体图形可靠地电连接,而不依赖于机械接触。

    Electrically conductive adhesive
    39.
    发明授权
    Electrically conductive adhesive 失效
    导电胶

    公开(公告)号:US5463190A

    公开(公告)日:1995-10-31

    申请号:US223413

    申请日:1994-04-04

    Abstract: A conductive adhesive (120) for electrically and mechanically bonding circuit terminals (105) includes a polymer (121) having a predetermined curing temperature range, a first conductive particulate material (125) suspendable in the polymer (121) for providing substantially uniform conductivity throughout the conductive adhesive (120), and a second conductive particulate material (130) suspendable in the polymer (121) for metallurgically bonding together particles of the first particulate material (125). The first conductive particulate material (125) provides substantially uniform conductivity throughout the conductive adhesive (120) and includes metallic particles having a melting point above the curing temperature of the polymer. The second conductive particulate material (130) welds together particles of the first particulate material (125) and includes metallic particles having a melting point within the curing temperature range of the polymer (121).

    Abstract translation: 用于电气和机械地结合电路端子(105)的导电粘合剂(120)包括具有预定固化温度范围的聚合物(121),可悬挂在聚合物(121)中的第一导电颗粒材料(125),用于提供基本均匀的电导率 导电粘合剂(120)和可悬挂在聚合物(121)中的第二导电颗粒材料(130),用于将第一颗粒材料(125)的颗粒冶金结合在一起。 第一导电颗粒材料(125)在整个导电粘合剂(120)中提供基本均匀的导电性,并且包括具有高于聚合物固化温度的熔点的金属颗粒。 第二导电颗粒材料(130)将第一颗粒材料(125)的颗粒焊接在一起并且包括熔点在聚合物(121)的固化温度范围内的金属颗粒。

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