Method for edge mounting flex media to a rigid PC board
    27.
    发明授权
    Method for edge mounting flex media to a rigid PC board 失效
    将柔性介质边缘安装到刚性PC板的方法

    公开(公告)号:US06378757B1

    公开(公告)日:2002-04-30

    申请号:US09773075

    申请日:2001-01-31

    Abstract: Edge mounting flexible media to a rigid PC board construction can be achieved by various methods. In any method used, there is a desire to create solderable pads on the edge of the rigid PC board. In accordance with the invention, the solderable pads are created by edge plating the PC Board or by a sliced via method. Depending on the type of flexible transmission line used, the construction will differ accordingly. For terminating flexible circuit media, the flex pads are laid out in such a way that the pads are etched in a configuration that matches up with the edge pads on the rigid PC Board. Solder past is then applied to the pads on the flex. The rigid PC Board is fixtured at a right angle to the flex and run through the reflow oven.

    Abstract translation: 通过各种方法可以实现将柔性介质固定到刚性PC板结构上。 在任何使用的方法中,希望在刚性PC板的边缘上形成可焊接焊盘。 根据本发明,通过边缘电镀PC板或通过切片通孔方法来产生可焊焊盘。 根据所使用的柔性传输线的类型,施工方式会有所不同。 为了终止柔性电路介质,柔性焊盘以这样一种方式布置,使得焊盘以与刚性PC板上的边缘焊盘相配合的构造被蚀刻。 然后将焊锡过去施加到柔性件上的焊盘。 刚性PC板与弯曲件成直角固定,并穿过回流炉。

    Mounting structure of semiconductor package
    28.
    发明申请
    Mounting structure of semiconductor package 审中-公开
    半导体封装的安装结构

    公开(公告)号:US20020014346A1

    公开(公告)日:2002-02-07

    申请号:US09872256

    申请日:2001-06-01

    Abstract: A mounting structure of a semiconductor package can improve resistance against thermal and mechanical external force. The mounting structure of a semiconductor package establishes electrical connection of a pad on a printing circuit board to a connection wiring by soldering the semiconductor package. The pad may be integrally formed with a via. The soldering may be performed by penetrating a part of solder within the via so that the connection wiring is connected to the pad through the via at a layer different from a layer of the pad.

    Abstract translation: 半导体封装的安装结构可以提高对热和机械外力的抵抗力。 半导体封装的安装结构通过焊接半导体封装而将印刷电路板上的焊盘电连接到连接布线。 垫可以与通孔一体地形成。 可以通过穿过通孔内的焊料的一部分来进行焊接,使得连接布线通过​​通孔在不同于焊盘层的层处连接到焊盘。

    Pad-on-via assembly technique
    29.
    发明授权
    Pad-on-via assembly technique 有权
    Pad-on-via装配技术

    公开(公告)号:US06300578B1

    公开(公告)日:2001-10-09

    申请号:US09512131

    申请日:2000-02-24

    Abstract: Fine pitch area array packaging is achieved using a via-in-pad design within the area array attach portion of a printed circuit board (PCB). The limitation of the design is the wicking action, whereby solder applied to the capture pad contact surface is depleted by capillary action into the via hole when reflowed, causing insufficient solder to be present at the contact surface to effect reliable and repeatable electrical connections. In one implementation, an initial application of solder is applied to plug the via hole with a material having a higher final melting temperature than eutectic solder, thereby providing a stable plug. This plug is formed by the initial solder application that may be either a eutectic solder containing a third metal that forms intermetallic compounds, when reflowed, that elevate the liquidus temperature or a solder having a different formulation with an inherent higher melting temperature. An alternative implementation is to plate the via hole with a material, such as nickel, which prevents eutectic solder, applied to the via capture pad contact surface, from wetting the hole surface and being drawn away from the contact surface by capillary action. Thus, the solder, applied to the via capture pad and used to establish an electrical connection is not depleted.

    Abstract translation: 使用在印刷电路板(PCB)的区域阵列附着部分内的通孔焊盘设计实现细间距区域阵列封装。 设计的限制是芯吸作用,由此当回流时,施加到捕获垫接触表面的焊料被毛细管作用通入通孔中,导致在接触表面处存在不足的焊料以实现可靠和可重复的电连接。 在一个实施方案中,施加焊料的初始应用以用比共晶焊料更高的最终熔融温度的材料堵塞通孔,从而提供稳定的插塞。 该插头由初始焊料应用形成,其可以是包含形成金属间化合物的第三金属的共晶焊料,当回流时,提高液相线温度的焊料或具有固有的较高熔融温度的不同配方的焊料。 另一种实施方案是用诸如镍的材料对通孔进行平板化,其防止施加到通孔捕获垫接触表面的共晶焊料润湿孔表面并通过毛细管作用从接触表面拉出。 因此,施加到通孔捕获垫并用于建立电连接的焊料不会耗尽。

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