Patent ID: 6206275
Filing Date: 2001-03-27
Classification: B23K,H01L

Abstract:
A wire bonding apparatus for bonding wire to a substrate, comprising:an ultrasonic bonding tool having an upper portion, a lower portion and a bottom tip, wherein the bonding tool in the lower portion adjacent the tip has a reduced cross-sectional area compared to the cross-sectional area of the bonding tool in the upper portion; anda cutter having an upper portion and a lower portion mounted adjacent the bonding tool extending along at least a portion of the bonding tool toward the tip, wherein the cutter in the lower portion extends at least partially into a projection of the cross-sectional area of the upper portion onto a plane perpendicular to the longitudinal axis of the bonding tool,wherein the lower portion of the cutter lies entirely within the projection of the cross-sectional area of the upper portion of the bonding tool.