Method for connecting leader line

Abstract

Disclosed is a method for connecting a core wire of a wire rod covered with an insulating coating and pulled out from a coil component with a substrate by irradiating a laser beam, the method comprising the steps of: (a) forming a bond part between the wire rod and the substrate, the bond part being made of a material having a high optical absorptance for laser beam; and (b) irradiating a laser beam on an area to be connected under a state that at least one of the wire rod and the substrate is being pulled toward the other.

1 . A method for connecting a core wire of a wire rod pulled out from a coil component with a substrate by irradiating a laser beam, the method comprising the steps of:
 (a) forming a bond part between the wire rod and the substrate, the wire rod being placed on the bond part which is formed on the substrate; and   (b) irradiating a laser beam on an area to be connected where the wire rod and the substrate are to be connected to each other via the bond part, under a state that at least one of the wire rod and the substrate is being pulled toward the other, wherein the laser beam is irradiated on the area to be connected so that the bond part melts, and the core wire of the wire rod sinks into the bond part.   
     
     
         2 . The method according to  claim 1 , wherein the bond part is formed of a material having a high optical absorptance for laser beam. 
     
     
         3 . The method according to  claim 2 , wherein the bond part is formed of a material containing at least tin. 
     
     
         4 . The method according to  claim 1 , wherein a periphery of the core wire of the wire rod is covered by the bond part.