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    • 2. 发明授权
    • Wiring substrate with thermal insert
    • 带热插入件的接线基板
    • US06317331B1
    • 2001-11-13
    • US09375175
    • 1999-08-16
    • Sundar KamathDavid ChazanSolomon I. Beilin
    • Sundar KamathDavid ChazanSolomon I. Beilin
    • H05K118
    • H01L23/5383H01L23/3735H01L2224/16225H01L2924/00014H01L2924/15311H01L2924/351H05K1/0271H05K1/0272H05K2201/0133H05K2201/068H05K2201/09109H05K2201/10416H05K2201/10734Y10T428/24926H01L2224/0401
    • A wiring substrate with reduced thermal expansion. A wiring substrate, such as a laminated PWB, thin film circuit, lead frame, or chip carrier accepts an integrated circuit, such as a die, a flip chip, or a BGA package. The wiring substrate has a thermal expansion reduction insert in a thermal expansion stress region where the integrated circuit is mounted. The thermal expansion reduction insert may extend a selected distance from the edge or edges of the integrated circuit attachment area, or stop a selected distance from the edge or edges of the integrated circuit attachment area, or be essentially equal to the integrated circuit attachment area. The thermal expansion reduction insert reduces the thermal expansion of the wiring substrate in the region that is joined to the integrated circuit, thus reducing thermal stress between components of the wiring substrate-integrated circuit assembly. In a specific embodiment, the wiring substrate is a laminated printed wiring board with the thermal expansion reduction insert in a layer next to an outer layer to which the integrated circuit is joined (mounted). In a further embodiment the thermal stress reduction insert is a CIC insert or a copper-molybdenum insert. In an alternative embodiment, the wiring substrate is a thin film substrate or a VLSI substrate.
    • 具有降低的热膨胀的布线基板。 诸如层叠PWB,薄膜电路,引线框架或芯片载体的布线基板可以接受诸如管芯,倒装芯片或BGA封装的集成电路。 布线基板在安装有集成电路的热膨胀应力区域中具有热膨胀降低插入件。 热膨胀减小插入件可以从集成电路附接区域的边缘或边缘延伸选定的距离,或者停止从集成电路连接区域的边缘或边缘选择的距离,或者基本上等于集成电路连接区域。 热膨胀减少插入物减少了与集成电路接合的区域中的布线基板的热膨胀,从而降低了布线基板集成电路组件的部件之间的热应力。 在具体实施方式中,布线基板是层叠印刷线路板,其中热膨胀降低插入件位于与集成电路接合(安装)的外层相邻的层中。 在另一实施例中,热应力减小插入件是CIC插入件或铜 - 钼插入件。 在替代实施例中,布线基板是薄膜基板或VLSI基板。