Plastic solder array using injection molded solder
    85.
    发明授权
    Plastic solder array using injection molded solder 失效
    塑料焊料阵列采用注塑焊料

    公开(公告)号:US6029882A

    公开(公告)日:2000-02-29

    申请号:US67904

    申请日:1998-04-27

    Abstract: Disclosed is a solder injection mold apparatus and method for providing solder balls to a printed circuit board substrate using the solder injection mold apparatus in the plastic ball grid array (PBGA). The solder mold through holes are chamfered at entry and at exit ends to assist in receipt of molten solder and the formation and transfer of solder balls to lands on the substrate. A blind recess is provided in the second major surface of the mold, i.e. the side facing the substrate, in order to accommodate electronic components mounted thereon. Solder balls are delivered and metallurgically affixed to the lands in a process that requires only one reflow, leaving the through holes clean of solder and the mold ready for reuse. The material of which the substrate, mold and base plate are comprised is selected to be non-wettable by solder and mutually compatible with respect to CTE when exposed to temperatures of molten solder.

    Abstract translation: 公开了一种使用塑料球栅阵列(PBGA)中的焊料注射模具装置向印刷电路板基板提供焊球的焊料注射模具装置和方法。 焊接模具通孔在入口处和出口端被倒角,以帮助接收熔融焊料,并且将焊球形成和转移到衬底上的焊盘上。 在模具的第二主表面,即面向衬底的一侧设置盲孔,以容纳安装在其上的电子部件。 焊球在仅需要一个回流的过程中输送和冶金地附着在焊盘上,留下通孔清洁焊料并且模具准备好重新使用。 选择基材,模具和基板的材料,当暴露于熔融焊料的温度时,被选择为不被焊料润湿并且相对于CTE相互兼容。

    Method of soldering components to at least one carrier
    86.
    发明授权
    Method of soldering components to at least one carrier 失效
    将组件焊接到至少一个载体的方法

    公开(公告)号:US6005224A

    公开(公告)日:1999-12-21

    申请号:US102478

    申请日:1998-06-22

    Abstract: The invention relates to a method of connecting components (12) to at least one carrier (11), for example by soldering or gluing. Such a method is carried out in an oven (1) through which carriers are moved. Preferably, the carrier is a flexible foil. The carrier separates the oven into an upper part (2) and a lower part (3). In both parts a hot air stream (14) is created and directed toward the carrier. Owing to the separation by the foil the hot air stream in the upper part cannot reach the lower part and vice versa. The temperature of the hot air stream in the upper part differs from that (is, for example, higher than) in the lower part. The heating elements in the upper part of the oven may all have the same high temperature (for example, 240.degree. C.) and the heating elements in the lower part may all have the same low temperature (for example, 60.degree. C.). By adjusting at least one air stream the desired temperature at the location of the carriers (for example, at solder lands 17) can be obtained very rapidly (comparable with a hot/cold water mixing tap).

    Abstract translation: 本发明涉及一种将部件(12)连接至至少一个载体(11)的方法,例如通过焊接或胶合。 这种方法在通过其移动载体的烘箱(1)中进行。 优选地,载体是柔性箔。 载体将烤箱分离成上部(2)和下部(3)。 在两部分中,产生热空气流(14)并将其指向载体。 由于箔的分离,上部的热空气流不能到达下部,反之亦然。 上部热空气流的温度与下部不同(例如高于)。 烘箱上部的加热元件全部可以具有相同的高温(例如240℃),下部的加热元件也可以具有相同的低温(例如60℃) 。 通过调节至少一个空气流,可以非常快速地获得载体(例如,在焊接区域17)位置处的期望温度(与热/冷水混合水龙头相当)。

    Method for use in bonding a chip to a substrate
    90.
    发明授权
    Method for use in bonding a chip to a substrate 有权
    用于将芯片接合到基板的方法

    公开(公告)号:US5971257A

    公开(公告)日:1999-10-26

    申请号:US257787

    申请日:1999-02-25

    Applicant: Renyi Yang

    Inventor: Renyi Yang

    Abstract: A fixture for use in the bonding of a plurality of chips each to a respective one of a plurality of substrates includes a lower vacuum chuck and a frame member supported on the chuck for reciprocatory motion toward and away from the chuck surface. The chuck surface is arranged to hold substrates with predeposited solder in pockets at predetermined locations thereon. The frame member has openings aligned with those pockets and weights which extend through the openings. After substrates are placed on the chuck surface, the substrates are heated so that the predeposited solder reaches eutectic status, and then chips are placed on the substrates. The frame member is then mounted on the chuck and gradually lowered until the weights press against respective chips, thereby holding the chips in position on the substrates. The entire assembly is then transported to a solder reflow bonding station.

    Abstract translation: 用于将多个芯片各自连接到多个基板中的相应一个的多个芯片的固定装置包括下部真空卡盘和支撑在卡盘上以朝向和远离卡盘表面往复运动的框架构件。 卡盘表面被布置成在其上的预定位置处将预沉积的焊料保持在凹穴中。 框架构件具有与延伸穿过开口的那些口袋和重物对齐的开口。 将基板放置在卡盘表面之后,加热基板,使预沉积的焊料达到共晶状态,然后将芯片放置在基板上。 然后将框架构件安装在卡盘上并逐渐降低,直到重物压在相应的芯片上,从而将芯片保持在基板上的适当位置。 然后将整个组件运输到焊料回流焊接站。

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