Surface profiling in electronic packages for reducing thermally induced interfacial stresses
    1.
    发明授权
    Surface profiling in electronic packages for reducing thermally induced interfacial stresses 失效
    用于减少热诱导的界面应力的电子封装中的表面形貌

    公开(公告)号:US06333551B1

    公开(公告)日:2001-12-25

    申请号:US09656941

    申请日:2000-09-07

    IPC分类号: H01L2310

    摘要: A method and structure for coupling a heat conductor (e.g., heat spreader, heat sink) to a semiconductor chip. In a first embodiment, a thermally conductive shape is formed on the heat conductor, a material in an uncured or partially cured state is dispensed on the chip and on peripheral portions of the chip, and the heat conductor is applied to the material to push the thermally conductive shape into the material such that the material is redistributed to contact both the thermally conductive shape and the chip. The material is then cured (e.g., by pressurization at elevated temperature). In a second embodiment, a thermally conductive shape is formed on the chip, a material (e.g., epoxy) in an uncured or partially cured state is dispensed on the thermally conductive shape and on peripheral portions of the chip, and the heat conductor is pushed into the material to make the material contact both the thermally conductive shape and the heat conductor. The material is then cured (e.g., by pressurization at elevated temperature). For both the first embodiment and the second embodiment, an average thickness of a peripheral portion of the cured material exceeds an average thickness of a central portion of the cured material.

    摘要翻译: 一种用于将热导体(例如,散热器,散热器)耦合到半导体芯片的方法和结构。 在第一实施例中,在导热体上形成导热形状,将未固化或部分固化状态的材料分配在芯片上和芯片周边部分上,并将热导体施加到材料上以推动 导热形状进入材料,使得材料重新分布以接触导热形状和芯片。 然后将材料固化(例如,通过在升高的温度下加压)。 在第二实施例中,在芯片上形成导热形状,将未固化或部分固化状态的材料(例如,环氧树脂)分配在导热形状和芯片的周边部分上,并且热导体被推动 进入材料以使材料接触导热形状和导热体。 然后将材料固化(例如,通过在升高的温度下加压)。 对于第一实施例和第二实施例,固化材料的周边部分的平均厚度超过固化材料的中心部分的平均厚度。

    Method of forming BGA interconnections having mixed solder profiles
    3.
    发明授权
    Method of forming BGA interconnections having mixed solder profiles 失效
    形成具有混合焊料轮廓的BGA互连的方法

    公开(公告)号:US06274474B1

    公开(公告)日:2001-08-14

    申请号:US09426578

    申请日:1999-10-25

    IPC分类号: H01L2144

    摘要: A method of forming BGA interconnections having improved fatigue life is disclosed. In particular, a combination of mask-defined and pad-defined solder joints are selectively positioned within the BGA package. The mask-defined solder joints possess a high equilibrium height, which forces the pad-defined solder joints to elongate, thereby making the pad-defined solder joints more compliant. Further, the pad-defined solder joints posses a slightly longer fatigue life because the stress concentrations found in the mask-defined solder joints are not present in the pad-defined solder joints. Therefore, the fatigue life of BGA packages is increased by implementing a majority of mask-defined solder joints to maintain a high equilibrium height, and selectively placing pad-defined solder joints in high stress areas of the BGA package.

    摘要翻译: 公开了一种形成具有改善的疲劳寿命的BGA互连的方法。 特别地,掩模限定和限定焊点的组合被选择性地定位在BGA封装内。 掩模定义的焊点具有高的平衡高度,这迫使焊盘限定的焊点伸长,从而使焊盘限定的焊点更顺应。 此外,焊盘限定的焊接接头具有稍长的疲劳寿命,因为在焊盘限定的焊点中不存在在掩模限定的焊点中发现的应力集中。 因此,通过实施大多数掩模定义的焊点以保持高平衡高度,并且将焊盘限定的焊点选择性地放置在BGA封装的高应力区域中,从而增加了BGA封装的疲劳寿命。

    Electrical connector system with member having layers of different
durometer elastomeric materials
    9.
    发明授权
    Electrical connector system with member having layers of different durometer elastomeric materials 失效
    电连接器系统,其具有不同硬度弹性体材料层

    公开(公告)号:US5873740A

    公开(公告)日:1999-02-23

    申请号:US4681

    申请日:1998-01-07

    CPC分类号: H01R13/2414 H01R43/24

    摘要: An electrical connector assembly which utilizes a double layered elastomeric for a pressure exertion member wherein the two, individual layers are of different hardness. The first layer is of a relatively low durometer elastomeric material while the second layer is of higher durometer elastomeric material and includes several projections, e.g., for engaging a circuitized substrate such as a flexible circuit. Both layers preferably have the same spring rate, while the projections of the second layer may possess a variety of different configurations, e.g., cylindrical or boxlike. The individual projections may each include extension portions which in turn are positioned within corresponding openings within the substantially solid first layer.

    摘要翻译: 一种电连接器组件,其使用双层弹性体用于压力消耗构件,其中两个单独的层具有不同的硬度。 第一层具有相对较低的硬度弹性体材料,而第二层具有较高硬度的弹性体材料,并且包括多个突起,例如用于接合诸如柔性电路的电路化基底。 两层优选地具有相同的弹簧速率,而第二层的突起可以具有各种不同的构造,例如圆柱形或盒状。 各个突起可以各自包括延伸部分,该延伸部分又位于基本上固体的第一层内的对应的开口内。

    High speed interposer
    10.
    发明授权
    High speed interposer 失效
    高速插入器

    公开(公告)号:US07875811B2

    公开(公告)日:2011-01-25

    申请号:US12010335

    申请日:2008-01-24

    IPC分类号: H01R12/04 H05K1/11

    摘要: A high speed interposer which includes a substrate having alternatingly oriented dielectric and conductive layers which form a substrate, openings which extend from one opposing surface of the substrate to a second opposing surface, conductive members positioned within the openings and also extending from surface to surface (and beyond, in some embodiments), and a plurality of shielding members positioned substantially around the conductive members to provide shielding therefore during the passage of high frequency signals through the conductive members.

    摘要翻译: 高速插入器,其包括具有交替取向的介电层和导电层的基板,其形成基板,从基板的一个相对表面延伸到第二相对表面的开口,定位在开口内并且还从表面延伸到表面的导电构件 并且在一些实施例中超越)以及基本上围绕导电构件定位的多个屏蔽构件,从而在高频信号通过导电构件期间提供屏蔽。