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    • 10. 发明授权
    • Method of making ball grid array package
    • 制造球栅阵列封装的方法
    • US06355499B1
    • 2002-03-12
    • US09610859
    • 2000-07-06
    • Shyh-Ing WuShin Hua ChaoYao Shin Fang
    • Shyh-Ing WuShin Hua ChaoYao Shin Fang
    • H01L2144
    • H01L23/3128H01L21/565H01L24/97H01L2224/45144H01L2224/48091H01L2224/73265H01L2924/181H01L2924/00014H01L2924/00H01L2924/00012
    • A method of making a ball grid array package comprises the steps of: (a) providing a film having an opening defined therein; (b) placing the film on a substrate; (c) attaching a semiconductor chip onto the substrate such that the semiconductor chip is positioned in the opening of the film; (d) electrically coupling the semiconductor chip to the substrate; (e) providing a molding die having a runner, a gate and a molding cavity defined therein, wherein the runner is connected to the molding cavity through the gate; (f) closing and clamping the molding die in a manner that the semiconductor chip is positioned in the molding cavity wherein the edges of the molding cavity fit entirely within the opening of the film and the edges of the runners and the gates are entirely positioned against the film; (g) transferring a hardenable molding compound into the molding cavity; (h) hardening the molding compound; (i) unclamping and opening the molding die; and (j) simultaneously removing the film and degating. The film in accordance with the present invention is characterized in that the adhesive force between the film and the molding compound is greater than the adhesive force between the film and the substrate. This makes the film tend to adhere to the excess molding compound; hence, the film will be removed along with the excess molding compound during the step (j) thereby automating the molding process.
    • 制造球栅阵列封装的方法包括以下步骤:(a)提供其中限定有开口的膜; (b)将膜放置在基底上; (c)将半导体芯片附着在基板上,使得半导体芯片位于膜的开口中; (d)将半导体芯片电耦合到基板; (e)提供具有限定在其中的流道,浇口和模制腔的模具,其中流道通过浇口连接到模腔; (f)以半导体芯片定位在模制腔中的方式闭合和夹紧模具,其中模制空腔的边缘完全配合在薄膜的开口内,并且流道和浇口的边缘完全被定位成抵抗 这个电影; (g)将可硬化的模塑料转移到模腔中; (h)硬化模塑料; (i)松开和打开成型模具; 和(j)同时除去膜并脱胶。 根据本发明的膜的特征在于,膜和模塑料之间的粘合力大于膜和基材之间的粘合力。 这使得膜倾向于粘附到多余的模塑料上; 因此,在步骤(j)期间,膜将与多余的模塑料一起被去除,从而使模制过程自动化。