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    • 2. 发明公开
    • WIRING BODY, WIRING SUBSTRATE, AND TOUCH SENSOR
    • 配线体,配线基板和触摸传感器
    • EP3177117A1
    • 2017-06-07
    • EP16743575.9
    • 2016-01-29
    • Fujikura, Ltd.
    • MURAKAMI, Makoto
    • H05K3/20G06F3/041H05K3/38
    • G06F3/044G06F3/041G06F2203/04103H05K1/0296H05K3/20H05K3/207H05K3/38H05K2201/09045H05K2201/09681H05K2203/0502
    • A wiring body (2) includes a conductive portion (5) including a contact surface (51) having a concave-convex shape including a concave portion (511) and a convex portion (512) in a section view in a longitudinal direction, and a top surface (52) facing the contact surface (51), and containing at least conductive particles (CP), and an adhesive layer (4) formed by being stacked on the contact surface (51). The adhesive layer (4) includes a smooth portion (41) provided at a substantially constant thickness and having a substantially smooth main surface (411), and a protrusion (42) provided on the smooth portion (41) to correspond to the conductive portion (5) and protruding from the main surface (411) toward a side of the conductive portion (5), the protrusion (42) comes into contact with the contact surface (51) and includes a concave-convex surface complementary to the concave-convex shape of the contact surface (51), the contact surface (51) is positioned on a side of the top surface (52) with respect to the main surface (411), and the following Formula (1) is satisfied. L 1 > L 2 ... (1). In the above Formula (1), L 1 denotes a unit length of the contact surface (51) in the section view in the longitudinal direction, and L 2 denotes a unit length of the top surface (52) in the section view in the longitudinal direction.
    • 布线体(2)具备:导电部(5),该导电部(5)在长度方向上的剖面观察下具有包含凹部(511)和凸部(512)的凹凸形状的接触面(51), 与接触表面51相对且至少包含导电颗粒CP的顶表面52以及通过堆叠在接触表面51上形成的粘合剂层4。 粘合剂层(4)包括以基本上恒定的厚度设置且具有基本上平滑的主表面(411)的平滑部分(41)和设置在平滑部分(41)上以对应于导电部分 (5)并且从所述主表面(411)朝向所述导电部分(5)的一侧突出,所述突起(42)与所述接触表面(51)接触并且包括与所述凹入表面互补的凹凸表面, (51)的凹凸形状,接触面(51)相对于主面(411)位于顶面(52)侧,满足下式(1)。 L1> L2 ...(1)。 在上式(1)中,L1表示沿纵向的截面图中的接触表面(51)的单位长度,并且L2表示在纵向方向上的截面图中的顶表面(52)的单位长度 。