Flip-chip package with optimized encapsulant adhesion and method
    8.
    发明授权
    Flip-chip package with optimized encapsulant adhesion and method 有权
    具有优化的密封剂附着力和方法的倒装芯片封装

    公开(公告)号:US06248614B1

    公开(公告)日:2001-06-19

    申请号:US09272518

    申请日:1999-03-19

    IPC分类号: H01L2144

    摘要: An electronic module having enhanced adhesion at the chip passivation and underfill interface is disclosed. The surface of the chip passivation is chemically modified to a sufficient depth such that the cured passivation is more reactive. The modified surface is treated with a polyamine preferably having a cyclic amine group extending from a preferably aliphatic backbone. During reflow of the solder joints of the electronic module by heating, the modified passivation reacts with the polyamine at the amine functionality. Following underfill of the electronic module with a polymeric material, preferably an epoxy resin, the polyamine on the surface of the passivation reacts with the underfill material during curing of the underfill material. The resulting electronic module is more robust since the amine acts as a chemical anchoring site for both the modified passivation and the underfill material. A method of assembling an electronic module utilizing the polyamine treatment at the chip and wafer level is also disclosed.

    摘要翻译: 公开了一种在芯片钝化和底部填充界面处具有增强的附着力的电子模块。 芯片钝化的表面被化学修饰到足够的深度,使得固化的钝化更具反应性。 改性表面用优选具有从优选脂肪族主链延伸的环状胺基团的多胺处理。 在通过加热回流电子模块的焊点时,改性的钝化剂在胺官能度下与多胺反应。 在具有聚合材料,优选环氧树脂的电子模块的底部填充之后,钝化剂表面上的多胺在底部填充材料的固化期间与底部填充材料反应。 所得到的电子模块更加坚固,因为胺用作修饰的钝化和底部填充材料的化学锚定位点。 还公开了利用芯片和晶片级的多胺处理来组装电子模块的方法。

    Method for making an encapsulated semiconductor chip module
    10.
    发明授权
    Method for making an encapsulated semiconductor chip module 失效
    制造封装半导体芯片模块的方法

    公开(公告)号:US06558981B2

    公开(公告)日:2003-05-06

    申请号:US09848510

    申请日:2001-05-03

    IPC分类号: H01L2144

    摘要: An encapsulated semiconductor chip module. The chip module has the overlying encapsulant adhered directly and integrally to bare portions of the substrate to which the chip is mounted. This configuration enhances the adhesion and inhibits unintended delamination of the encapsulant from the balance of the module. The module is made by patterning anchor openings into the solder mask. The anchor openings expose corresponding portions of the substrate. It is important to locate the anchor openings over parts of the substrate that do not have circuitry on them, that is, on bare portions, so as to avoid corrosion or contamination of the circuit connections.

    摘要翻译: 封装的半导体芯片模块。 芯片模块具有直接并整体地粘附到芯片所安装的基板的裸露部分的上覆密封剂。 这种构造增强了粘附性,并且阻止了封装材料与模块平衡的意外分层。 该模块通过将锚定开口图案图案化成焊接掩模。 锚定开口露出衬底的相应部分。 重要的是将锚定开口定位在其上没有电路的基板的部分上,即在裸露的部分上,以避免腐蚀或电路连接的污染。