To provide a flux-containing capsule which sufficiently removes any oxide film on the surface of a conductive particle, and reduces the connection resistance between the electrodes when attached to a surface of the conductive particle having a metallic layer on the surface and used for connection between electrodes, and to provide the conductive particle with the flux-containing capsule using the flux-containing capsule.

The flux-containing capsule 3 is attached to the surface 2a of the conductive particle 2 with the metallic layer on the surface 2a and is used. The flux-containing capsule includes a flux 4 and a coating film 5 containing the flux 4 and formed of polymer. In the flux-containing capsule 3, the glass-transition temperature of the polymer is ≥100°C, and equal to or lower than the melting point of the metallic layer. In the conductive particle 1 with the flux-containing capsule, the flux-containing capsule 3 is attached to the surface 2a of the conductive particle 2.

COPYRIGHT: (C)2010,JPO&INPIT