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    • 23. 发明授权
    • Preparing MCM hat for removal
    • 准备MCM帽子去除
    • US06908025B2
    • 2005-06-21
    • US10604111
    • 2003-06-26
    • Patrick A. CoicoSteven P. OstranderSudipta K. Ray
    • Patrick A. CoicoSteven P. OstranderSudipta K. Ray
    • B23K1/018B23K31/02B23K31/00
    • B23K1/018Y10T29/4973Y10T29/4975Y10T29/49824
    • 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.
    • 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。