Apparatus and method for repairing electronic packages
    32.
    发明授权
    Apparatus and method for repairing electronic packages 失效
    用于修理电子封装的装置和方法

    公开(公告)号:US06713686B2

    公开(公告)日:2004-03-30

    申请号:US10053362

    申请日:2002-01-18

    Abstract: A multi chip module substrate arranged with repair vias and repair lines extending between repair vias of the chip sites of the module by which repairs can be effected to overcome defects in the module circuits and a method for effecting the repairs of defects in the circuits of this module. A defect can occur in any one of a first signal via, a second signal via, and a circuit line extending between and intended to electrically connect the first signal via and the second signal via. After a defective circuit is identified, the signal vias of the circuit are isolated. Then, the first signal via of the defective circuit is electrically connected to that repair via of the chip site having the first signal via that is connected to that repair via of the chip site having the second signal via and the second signal via of the defective circuit is electrically connected to that repair via of the chip site having the second signal via that is connected to that repair via of the chip site having the first signal via.

    Abstract translation: 多芯片模块基板,其布置有在模块的芯片位置的修复通道之间延伸的修理通孔和修复线,通过该维修线可以进行修理以克服模块电路中的缺陷,以及用于实现该电路中的缺陷的修复的方法 模块。 在第一信号通孔,第二信号通孔以及在第一信号通孔和第二信号通孔之间延伸并且用于电连接第一信号通孔的电路线中的任何一个中可能会发生缺陷。 识别出故障电路后,电路的信号通孔被隔离。 然后,故障电路的第一信号通路经由具有第一信号的芯片位置的修复通孔经由与具有第二信号通路的芯片位置的修复通路连接,并且具有缺陷电路的第二信号通孔 电路经由具有第二信号的芯片位置的修复通路经由与经由具有第一信号通孔的芯片位置的修复通路相连接。

    Interconnection structure and process module assembly and rework
    34.
    发明授权
    Interconnection structure and process module assembly and rework 失效
    互连结构和过程模块组装和返工

    公开(公告)号:US06235996B1

    公开(公告)日:2001-05-22

    申请号:US09014804

    申请日:1998-01-28

    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 reflows. 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 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,并且在随后的回流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,通过屏蔽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合物中的焊料预成型件润湿到电子模块I / O焊盘上,然后将互连柱或球接合。 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从电路卡分离电子模块。

    Preparing MCM hat for removal
    40.
    发明授权
    Preparing MCM hat for removal 失效
    准备MCM帽子去除

    公开(公告)号:US06908025B2

    公开(公告)日:2005-06-21

    申请号:US10604111

    申请日:2003-06-26

    CPC classification number: B23K1/018 Y10T29/4973 Y10T29/4975 Y10T29/49824

    Abstract: A process and apparatus for preparing an MCM for hat removal where the hat includes a piston thermally coupled to a corresponding chip. The apparatus includes a heater positioned to reflow a joint between the piston and a base of the hat; and a retractor for biasing the piston away from the corresponding chip. Implementation of the apparatus and process prevent a piston, as it moves across the top of a corresponding chip during mechanical shear to remove the hat, to impact chip(s) and surrounding components. In addition, since piston(s) are retracted, the likelihood of piston impact with or cracking of a chip is reduced. In addition, cutting into a corresponding chip having a tilted back surface is prevented. The need to replace chips and other electronic components when making other repairs may, therefore, be greatly reduced.

    Abstract translation: 一种制备用于帽子去除的MCM的方法和装置,其中帽子包括热耦合到相应芯片的活塞。 该装置包括加热器,该加热器定位成回流活塞和帽子的基座之间的接头; 以及用于将活塞偏压离开相应芯片的牵开器。 该设备和过程的实施防止活塞在机械剪切过程中跨过相应芯片的顶部移动以去除帽子,以冲击芯片和周围部件。 此外,由于活塞缩回,因此减少了活塞撞击或碎裂的可能性。 此外,防止切入具有倾斜背面的相应芯片。 因此,在进行其他维修时需要更换芯片和其他电子部件可能会大大降低。

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