Vertical conduction flip-chip device with bump contacts on single surface
    7.
    发明授权
    Vertical conduction flip-chip device with bump contacts on single surface 有权
    垂直导通倒装芯片器件,在单面上具有凸点接触

    公开(公告)号:US06653740B2

    公开(公告)日:2003-11-25

    申请号:US09780080

    申请日:2001-02-09

    Abstract: A flip-chip MOSFET structure has a vertical conduction semiconductor die in which the lower layer of the die is connected to a drain electrode on the top of the die by a diffusion sinker or conductive electrode. The source and gate electrodes are also formed on the upper surface of the die and have coplanar solder balls for connection to a circuit board. The structure has a chip scale package size. The back surface of the die, which is inverted when the die is mounted may be roughened or may be metallized to improve removal of heat from the die. Several separate MOSFETs can be integrated side-by-side into the die to form a series connection of MOSFETs with respective source and gate electrodes at the top surface having solder ball connectors. Plural solder ball connectors may be provided for the top electrodes and are laid out in respective parallel rows. The die may have the shape of an elongated rectangle with the solder balls laid out symmetrically to a diagonal to the rectangle.

    Abstract translation: 倒装芯片MOSFET结构具有垂直导电半导体管芯,其中管芯的下层通过扩散沉积片或导电电极连接到管芯顶部的漏电极。 源极和栅电极也形成在管芯的上表面上,并且具有用于连接到电路板的共面焊球。 该结构具有芯片级封装尺寸。 当安装模具时倒模的模具的背面可以被粗糙化或者可以被金属化以改善从模具中的热量的去除。 几个单独的MOSFET可以并排集成到管芯中,以形成MOSFET与具有焊球连接器的顶表面处的相应源极和栅电极的串联连接。 可以为顶部电极提供多个焊球连接器并且布置在各自的平行行中。 模具可以具有细长矩形的形状,其中焊球对称地对准矩形的对角线。

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