Patent ID: 6516991
Filing Date: 2003-02-11
Classification: B23K,H01L

Abstract:
A wire bonding apparatus comprising:stage driving means for driving a stage horizontally; a bonding arm provided on said stage so as to rotate at a rotary shaft, that is perpendicular to the direction in which said stage is moved; a capillary provided at the distal end portion of said bonding arm to constitute a bonding head; bonding arm driving means for rotating said bonding arm at said rotary shaft and for moving said bonding head vertically; reaction force calculation means for calculating a reaction force applied to said bonding head when said stage is moved horizontally; and means for employing said reaction force, obtained by said reaction force calculation means, for correcting a torque instruction value that is to be transmitted to said bonding arm driving means and for generating a thrusting force for countering said reaction force applied to said bonding head.