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    • 2. 发明授权
    • Composite double-sided copper foil substrates and flexible printed circuit board structures using the same
    • 复合双面铜箔基板和使用其的柔性印刷电路板结构
    • US08536460B2
    • 2013-09-17
    • US12915467
    • 2010-10-29
    • Chih-Ming LinShou-Jui HsiangChien-Hui Lee
    • Chih-Ming LinShou-Jui HsiangChien-Hui Lee
    • H05K1/03
    • H05K3/386B32B7/12B32B15/08B32B15/20B32B2457/08H05K1/028H05K1/0346H05K1/0393H05K2201/0154H05K2201/0195H05K2201/0355
    • A double-sided copper foil substrate, which comprises: a polymer layer; a first copper foil; an adhesive layer formed on the polymer layer such that the polymer layer is sandwiched between the adhesive layer and the first copper layer; and a second copper foil causing the adhesive layer to be sandwiched between the second copper foil and the polymer layer, wherein the polymer layer and the adhesive layer have a total thickness of from 12 to 25 μm. The present invention further provides a flexible printed circuit board structure utilizing the composite double-sided copper foil substrate of the present invention, wherein the second double-sided copper foil substrate has a trench for exposing a portion of the adhesive layer. The double-sided copper foil substrate of the present invention are lower in rebound and satisfying the demand for the greater number of bending and sliding cycles under a lower R angle, and particularly is suitable for thin and flexible electronic products.
    • 一种双面铜箔衬底,其包括:聚合物层; 第一个铜箔; 形成在所述聚合物层上的粘合剂层,使得所述聚合物层夹在所述粘合剂层和所述第一铜层之间; 以及使所述粘合剂层夹在所述第二铜箔和所述聚合物层之间的第二铜箔,其中所述聚合物层和所述粘合剂层的总厚度为12至25μm。 本发明还提供了利用本发明的复合双面铜箔基板的柔性印刷电路板结构,其中第二双面铜箔基板具有用于暴露粘合层的一部分的沟槽。 本发明的双面铜箔基板的回弹率较低,并且在较低的R角下满足对较大数量的弯曲和滑动循环的需求,特别适用于薄而柔性的电子产品。