IC chip package with near substrate scale chip attachment
    8.
    发明申请
    IC chip package with near substrate scale chip attachment 审中-公开
    IC芯片封装附近具有基板尺寸芯片附件

    公开(公告)号:US20080169551A1

    公开(公告)日:2008-07-17

    申请号:US11653422

    申请日:2007-01-16

    IPC分类号: H01L23/13

    摘要: An IC package with a near-substrate-scale die-attaching layer includes a substrate, a near-substrate-scale die-attaching layer, a chip, a plurality of bonding wires, an encapsulant, and a plurality of solder balls. A plurality of ball pads are formed on the bottom surface of the substrate for solder ball placement. The near-substrate-scale die-attaching layer is formed on the top surface of the substrate covering most of the top surface above the ball pads without extending to the edges of the top surface. The active surface of the chip is attached to a first portion of the near-substrate-scale die-attaching layer and is electrically connected to the substrate by the bonding wires. The encapsulant is formed above the top surface of the substrate to cover a second portion of the near-substrate-scale die-attaching layer extending between the substrate and the encapsulant. Therefore, without adding extra components, the intense thermal stresses imposed on some specific solder balls at the corners of the bottom surface of the substrate or under the edges of the chip will be reduced. During on-board TCT, the solder balls will not easily be broken so that the reliability of IC package is enhanced. Moreover, the near-substrate-scale die-attaching layer is completely encapsulated by the encapsulant 250 to have a better resistance to moisture.

    摘要翻译: 具有近基板尺寸的芯片安装层的IC封装包括基板,近基板尺寸的芯片安装层,芯片,多个接合线,密封剂和多个焊球。 在用于焊球放置的基板的底面上形成有多个球垫。 接近基板的模具附接层形成在衬底的顶表面上,该顶表面覆盖球垫上方的大部分顶表面,而不延伸到顶表面的边缘。 芯片的有源表面附着在近基板尺寸的芯片安装层的第一部分上,并通过接合线与基板电连接。 密封剂形成在衬底的顶表面之上,以覆盖在衬底和密封剂之间延伸的接近衬底的管芯附着层的第二部分。 因此,在不增加额外的部件的情况下,施加在基板底面的拐角处或芯片边缘下方的一些特定焊球的强烈的热应力将会降低。 在板载TCT期间,焊球不容易断裂,从而提高了IC封装的可靠性。 此外,近基板尺寸的管芯附着层被密封剂250完全包封以具有更好的耐湿性。

    CIRCUIT SUBSTRATE WITH STRONG ADHESION
    9.
    发明申请
    CIRCUIT SUBSTRATE WITH STRONG ADHESION 审中-公开
    具有强粘性的电路基板

    公开(公告)号:US20070298225A1

    公开(公告)日:2007-12-27

    申请号:US11535946

    申请日:2006-09-27

    IPC分类号: B32B9/04

    摘要: The surface of the circuit substrate is a solder mask. The solder mask protects the electrical circuit on the circuit substrate against suffering from the environmental damage. By dividing the area of the circuit substrate into the solder mask area and the adhesive area, a bismaleimide triazine layer is formed on the surface of the circuit substrate to coarsen the adhesive area and so as to enhance the adhesion strength between the chip and the circuit substrate.

    摘要翻译: 电路基板的表面是焊接掩模。 焊接掩模保护电路基板上的电路免受环境破坏。 通过将电路基板的面积划分为焊料掩模区域和粘合剂区域,在电路基板的表面上形成双马来酰亚胺三嗪层,以使粘合剂区域粗化,以增强芯片和电路之间的粘合强度 基质。