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    • 9. 发明授权
    • Constraint stiffener design
    • 约束加强筋设计
    • US07271480B2
    • 2007-09-18
    • US11237924
    • 2005-09-29
    • Kuo-Chin ChangChing-Yu Ni
    • Kuo-Chin ChangChing-Yu Ni
    • H01L23/20
    • H01L23/16H01L23/36H01L23/562H01L2224/16H01L2224/73253H01L2924/01019H01L2924/15311
    • A constraint stiffener for reinforcing an integrated circuit package is provided. In one embodiment, the constraint stiffener comprises a rigid, planar base element for bonding to an integrated circuit substrate. The base element has a plurality of elongated support members, and the base element has an opening therein for surrounding an integrated circuit. The base element and support members reduce warpage due to thermal expansion mismatches between at least the integrated circuit and the substrate. In one embodiment, the elongated support members are detachable from the corners of the base element. In another embodiment, the elongated support members have means for attaching and detaching to the corners of the base element. In yet another embodiment, the elongated support members are detachable from about the midsections of the base element. In another embodiment, the elongated support members have means for attaching and detaching to the midsections of the base element.
    • 提供了用于加强集成电路封装的约束加强件。 在一个实施例中,约束加强件包括用于结合到集成电路基板的刚性平面基座元件。 基座元件具有多个细长的支撑构件,并且基座元件具有用于围绕集成电路的开口。 基部元件和支撑构件由于至少集成电路和基板之间的热膨胀失配而减少翘曲。 在一个实施例中,细长支撑构件可从基座元件的角部拆卸。 在另一个实施例中,细长支撑构件具有用于附接和分离到基部元件的角部的装置。 在另一个实施例中,细长的支撑构件可从基部元件的中央部分的周围拆卸。 在另一个实施例中,细长的支撑构件具有用于附接和分离到基部元件的中部的装置。