Patent ID: 6315190
Filing Date: 2001-11-13
Classification: B23K,H01L

Abstract:
A wire bonding method in which a first bonding point and a second bonding point are connected by a wire that passes through a capillary, consisting of the ordered steps of:connecting a tip end of the wire to the first bonding point;raising the capillary while delivering the wire;performing a reverse operation in which the capillary is caused to move in an opposite direction from the second bonding point to form a first kink in the wire;raising the capillary obliquely upward toward the second bonding point and then further raising the capillary while delivering the wire;performing another reverse operation in which the capillary is caused to move in the opposite direction from the second bonding point to form a second kink in said wire;raising the capillary to deliver the wire;moving the capillary toward the second bonding point; andconnecting the wire to the second bonding point;whereby a stable wire loop with high shape retention strength is provided.