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    • 3. 发明授权
    • Flexible circuit board interconnect with strain relief
    • 柔性电路板与应变消除互连
    • US5981870A
    • 1999-11-09
    • US857121
    • 1997-05-15
    • Tina BarcleyRobert A. IsolaEdward T. PokriefkaNorman J. RothVasil Germanski
    • Tina BarcleyRobert A. IsolaEdward T. PokriefkaNorman J. RothVasil Germanski
    • H05K1/00H05K1/02H05K1/11H05K3/28H05K9/00
    • H05K1/028H05K1/0224H05K1/118H05K9/0039H05K1/0253H05K2201/0715H05K2201/09681H05K3/28
    • A flexible circuit board interconnect is provided with flex strain relief capabilities. The flexible circuit board interconnect includes a polyamide or polyimide (both are nylons) substrate layer, a ground plane layer and a conductor strip layer. The ground plane layer is provided with scalloped edges along opposite sides thereof. The ground plane provides a shield for preventing radio frequency interference to and from the signals passed through the conductor strips. The ground plane layer and the conductor strips are covered at least partially by a pair of soldermask layers which are provided with scalloped edges. The scalloped edges on the soldermask layers and the ground plane prevent the generation of a crease or fold line on the surface of the flexible circuit board interconnect. Each of the conductor strips are provided with a pair of vias on opposite ends of thereof. The vias are arranged to be offset from the vias on adjacent conductor strips such that a perforation-type tear line is avoided and such that when a hot bar soldering is used, at least one via remains uncovered for receiving soldering wicking, thus reducing the likelihood of solder bridging across conductor strips.
    • 柔性电路板互连提供了柔性应变消除功能。 柔性电路板互连包括聚酰胺或聚酰亚胺(均为尼龙)衬底层,接地平面层和导体带层。 接地平面层沿其相对侧设置有扇形边。 接地平面提供屏蔽,用于防止对穿过导体条的信号产生射频干扰。 地平面层和导体条至少部分由一对带有扇形边缘的焊接掩模层覆盖。 焊接层和接地面上的扇形边缘防止在柔性电路板互连表面产生折痕或折线。 每个导体条在其相对端上设置有一对通孔。 通孔布置成偏离相邻导体条上的通孔,使得避免穿孔型撕裂线,并且使得当使用热棒焊接时,至少一个通孔保持未覆盖以接收焊接芯吸,从而降低可能性 焊接桥接在导体条上。