Patent ID: 6616030
Filing Date: 2003-09-09
Classification: B23K,H01L

Abstract:
A machine for making ultrasonic wire bonds comprising;a. an orbital bonding tool head rotatable about a longitudinal head rotation axis therethrough and having disposed longitudinally therethrough a wire transit bore coaxial with said head rotation axis for longitudinally translatably receiving a length of bonding wire, b. translational positioning means for translatably positioning said orbital bonding tool head responsive to first, translational drive signals to precisely pre-determinable positions in a three-dimensional coordinate space relative to a workpiece, c. rotational positioning means for rotating said orbital bonding tool head about said longitudinal head rotation axis thereof in response to second, rotational drive signals to precisely pre-determ inable rotational orientations relative to a workpiece, d. an ultrasonic transducer, e. transducer support means attached to said orbital bonding tool head for supporting said ultrasonic transducer, f. an ultrasonic bonding tool mechanically coupled to said ultrasonic transducer, said bonding tool having a tip coaxially aligned with said longitudinal head rotation axis of said orbital bonding tool head and a wire feed bore therethrough for receiving wire from said wire transit bore through said bonding tool head, and g. thus enabling said tip of said bonding tool to be positioned at a first bond site location on a workpiece, an ultrasonic wire bond formed thereat, said bonding tool head rotated by said rotational positioning means to align said wire feed bore of said bonding tool relative to a second bond site, and said tip of said bonding tool translated by motion of said translational positioning means to said second bond site, said bonding wire paying out through said wire supply bore and said wire feed bore without twisting.