导电颗粒属性对各向异性导电粘合剂电导的影响

利用差分法对导电粘合剂中导电颗粒的属性(包括导电颗粒的形状、大小等)对导电粘合剂电导的影响进行了计算.在交流信号下，导电粘合剂的金属填充颗粒越小，导电粘合剂的电导越大.通过理论计算发现，导电粘合剂的导电颗粒若为球形(正方体)，导电粘合剂的电导与金属颗粒的半径(边长)成反比例变化；若为长方体或圆柱体颗粒，则电导随颗粒高度的增加而减小，而基本不随颗粒底面积的改变而变化.关键词：导电粘合剂电导导电颗粒差分法

Dependence of anisotropically conductive adhesive high-frequency signal transmission on conductive particle property

Using differential method, we have calculated the dependence of anisotropically conductive adhesive high-frequency signal transmitting property on conductive particle property (including the shape and size of particles). Under AC bias, the smaller the size of conductive filler particle in the conductive adhesive, the better conductance it has. Through the theoretical calculation, we found that the conductance is inversely proportional to the radius (side length) if the shape of the conductive metal particle is a sphere (cube). If the shape of the metal particle is a cuboid or cylinder, the conductance is inversely proportional to the height, independent of the changes in the base.