FLIP CHIP MOUNTING TECHNIQUE
    49.
    发明申请
    FLIP CHIP MOUNTING TECHNIQUE 审中-公开
    FLIP芯片安装技术

    公开(公告)号:WO02045152A2

    公开(公告)日:2002-06-06

    申请号:PCT/US2001/044389

    申请日:2001-11-28

    Abstract: The invention provides processes for bonding a flip chip (1) to a substrate (3) in a manner that maximizes reliability of the bonding operation. Electrically conductive polymer bumps (2) are formed on bond pads (4) of a flip chip (1) and the flip chip polymer bumps (2) are at least partially hardened. Electrically conductive polymer bumps (8) are formed on bond pads (4) of a substrate, and a layer of electrically insulating adhesive paste (5) is then applied on the substrate (3), covering the substrate polymer bumps (8) with the adhesive (5). The bond pads (6) of the flip chip () are then aligned with the bond pads (4) of the substrate (3) and the at least partially hardened flip chip polymer bumps (2) are then pushed through the substrate adhesive (5) and at least partially into the substrate polymer bumps (8). In a further method, electrically conductive polymer bumps (2) are formed on bond pads (6) of a flip chip (1) and the flip chip polymer bumps (2) are at least partially hardened. A layer of electrically insulating adhesive paste (5) is formed on a substrate having bond pads (4), covering the bond pads (4) with the adhesive (5). The bond pads (6) of the flip chip (1) are aligned with the bond pads (4) of the substrate (3), and then the at least partially hardened flip chip polymer bumps (2) are pushed through the substrate adhesive (5) with pressure sufficient for the flip chip polymer bumps (2) to directly contact and deform the substrate bond pads (4).

    Abstract translation: 本发明提供了以最大限度地提高接合操作的可靠性的方式将倒装芯片(1)接合到基板(3)的工艺。 导电聚合物凸块(2)形成在倒装芯片(1)的接合焊盘(4)上,并且倒装芯片聚合物凸块(2)至少部分硬化。 导电聚合物凸块(8)形成在基板的接合焊盘(4)上,然后将一层电绝缘粘合剂浆料(5)施加到基板(3)上,用基板聚合物凸块(8)覆盖基板聚合物凸块 粘合剂(5)。 然后将倒装芯片()的接合焊盘(6)与衬底(3)的接合焊盘(4)对准,然后将至少部分硬化的倒装芯片聚合物凸块(2)推入衬底粘合剂(5) )并且至少部分地进入衬底聚合物凸块(8)。 在另一种方法中,导电聚合物凸块(2)形成在倒装芯片(1)的接合焊盘(6)上,并且倒装芯片聚合物凸块(2)至少部分硬化。 在具有接合焊盘(4)的基板上形成一层电绝缘粘合剂膏(5),用粘合剂(5)覆盖接合焊盘(4)。 倒装芯片(1)的接合焊盘(6)与衬底(3)的接合焊盘(4)对准,然后将至少部分硬化的倒装芯片聚合物凸块(2)推到衬底粘合剂 5)具有足以使倒装芯片聚合物凸块(2)直接接触和变形衬底接合焊盘(4)的压力。

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