METHOD AND ARRANGEMENT FOR ATTACHING A COMPONENT
    4.
    发明申请
    METHOD AND ARRANGEMENT FOR ATTACHING A COMPONENT 审中-公开
    连接组件的方法和布置

    公开(公告)号:WO98038676A1

    公开(公告)日:1998-09-03

    申请号:PCT/FI1998/000177

    申请日:1998-02-26

    Abstract: The invention is related to a method of fabricating an attachment bump of a component (11). In accordance with the invention, a flexible preform (13a) is fabricated, which is plated with materials (13b) appropriate for metallurgical bonding. The invention is also related to a method of attaching a component (11) to the surface of a circuit card (15) using bumps. In accordance with the invention, bumps are formed from preforms (13a) made from a flexible material, which preforms (13a) are metallized (13b) over their entire surface. The bump (13a, 13b) is attached to the attachment pads (12a, 16a) of the component (11) and the circuit card (15) by means of metallizations (12b, 13b, 16b) between the attachment pads and the bump. The bond is formed metallurgically by transfusion. The surface of the bonding side of the component (11) is coated with an insulating material (14) before the mentioned bonding elsewhere than at the attachment pads (12). The mentioned insulating material (14) is thermoplastic, thermoplastic resin or thermosetting plastic in the B state. To accomplish metallurgical bonding of the bonding material, bismuth (Bi) is used as part of the material.

    Abstract translation: 本发明涉及一种制造组件(11)的附接凸块的方法。 根据本发明,制造柔性预成型件(13a),其被镀有适于冶金结合的材料(13b)。 本发明还涉及使用凸块将组件(11)附接到电路卡(15)的表面的方法。 根据本发明,由柔性材料制成的预成型件(13a)形成凸块,预制件(13a)在其整个表面上被金属化(13b)。 凸块(13a,13b)通过附接垫和凸起之间的金属化(12b,13b,16b)附接到部件(11)的附接焊盘(12a,16a)和电路卡(15)。 该债券是通过输血冶金形成的。 组件(11)的粘合侧的表面在所提到的粘合之前涂覆有绝缘材料(14),而不是在附接焊盘(12)处。 所提到的绝缘材料(14)是处于B状态的热塑性塑料树脂或热固性塑料。 为了完成接合材料的冶金结合,使用铋(Bi)作为材料的一部分。

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