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    • 96. 发明授权
    • Method for blocking contamination and stabilizing chip capacitor during
attachment using a tape strip
    • 在使用带条附着时阻止污染和稳定芯片电容器的方法
    • US5529957A
    • 1996-06-25
    • US417633
    • 1995-04-06
    • Ken Chan
    • Ken Chan
    • H01L23/64H05K1/02H05K3/30H01L21/71H01L21/764
    • H01L23/642H05K3/303H05K3/305H01L2924/0002H05K1/0231H05K2201/10515H05K2201/10522H05K2201/10636H05K2203/0191H05K2203/0769Y02P70/611Y02P70/613Y10S148/014
    • Chip capacitors are attached to an integrated circuit package. Strips of synthetic tape are placed between pairs of chip capacitor pads on the integrated circuit package. The strips of synthetic tape each have a height extending above height of the pairs of chip capacitor pads. In the preferred embodiment, the strips of synthetic tape are strips of polyimide tape. The height of the strips of synthetic tape is selected so that the chip capacitors will be installed at a sufficient distance from the integrated circuit package so that solder balls will not be of sufficient diameter to wedge between the integrated circuit package and the chip capacitors. The chip capacitors are installed over the pairs of chip capacitor pads. The chip capacitors rest on the strips of synthetic tape. For example, the chip capacitors are permanently attached to the pairs of chip capacitors using a solder process. A reflow solder process is then performed. Afterwards, the strips of synthetic tape are removed from the integrated circuit package. After removal of the strips of synthetic tape, a cleaning of area under the chip capacitors may be performed to remove any material under and around the chip capacitors.
    • 芯片电容器连接到集成电路封装。 合成胶带条放置在集成电路封装上的芯片电容器垫对之间。 合成胶带的每条带都具有高于成对的芯片电容器垫的高度的高度。 在优选实施例中,合成带的条带是聚酰亚胺胶带条。 选择合成胶带条的高度,使得片状电容器将安装在与集成电路封装件足够的距离处,使得焊球不会具有足够的直径以楔住集成电路封装和芯片电容器之间。 芯片电容器安装在成对的芯片电容器焊盘上。 贴片电容器放在合成胶带上。 例如,使用焊接工艺将芯片电容器永久地附接到成对的芯片电容器。 然后进行回流焊接工艺。 之后,从集成电路封装中取出合成胶带条。 在去除合成胶带条之后,可以对芯片电容器下的区域进行清洁以去除芯片电容器下面和周围的任何材料。