Method of making an electronic package
    1.
    发明授权
    Method of making an electronic package 失效
    制作电子包装的方法

    公开(公告)号:US07250330B2

    公开(公告)日:2007-07-31

    申请号:US10282975

    申请日:2002-10-29

    IPC分类号: H01L21/00 H01L21/30

    摘要: A method of making an electronic package is described, wherein a substrate is provided with a pattern of conductive pads and a portion of solder positioned on selected ones of the pattern of copper pads. The solder is then reflowed to form partial hemispherically shaped caps on the selected copper pads. The partial hemispherically shaped caps are then coated with a solder flux. A thin semiconductor chip with a pattern of conductive elements, corresponding to partial hemispherically shaped capped pads, is then positioned on the substrate so that the conductive elements of the thin semiconductor chip substantially line up with the partial hemispherically shaped capped pads of the substrate. The solder is then heated to reflow temperature and an electrical couple is formed between the thin semiconductor chip and the substrate. Since all the solder necessary to make the electrical couple is positioned on the substrate, it is possible to use a thin semiconductor chip in the electronic package avoiding the problem presented by the handling and processing steps associated with securing a bumped wafer substrate during the thinning process and in subsequent processes of making the thinned semiconductor chip from the bumped wafer, for example, the dicing step.

    摘要翻译: 描述了一种制造电子封装件的方法,其中衬底设置有导电焊盘的图案和位于铜焊盘上的所选图案上的焊料的一部分。 然后将焊料回流以在选定的铜焊盘上形成部分半球形帽。 然后用焊剂涂覆部分半球形盖。 然后将具有对应于部分半球形封盖焊盘的导电元件图案的薄半导体芯片定位在基板上,使得薄半导体芯片的导电元件基本上与衬底的部分半球形封盖焊盘对齐。 然后将焊料加热回流温度,并在薄的半导体芯片和衬底之间形成电耦合。 由于制造电耦合所需的所有焊料都位于基板上,所以可以在电子封装中使用薄的半导体芯片,避免了在薄化处理期间固定凸起的晶片衬底的处理和处理步骤所带来的问题 以及在从凸起的晶片制造变薄的半导体芯片的后续工艺中,例如,切割步骤。