Patent ID: 6119926
Filing Date: 2000-09-19
Classification: B23K,H01L

Abstract:
A Method for producing a wire connection between a first connection point located on a semiconductor chip and a second connection point located on a substrate or on a second semiconductor chip, said method comprising:attaching a wire to the first connection point,running the wire through a horizontally and vertically moveable capillary which serves to attach the wire to the first and second connection points and to guide the wire between the first and second connection points,moving the capillary to the second connection point along a predetermined trajectory on which the wire is pulled out a required length and the wire is formed into a bridge, andmoving the capillary to unroll a wire loop onto the substrate in an end section of the trajectory by superimposing on the end section a variable horizontal movement to a downward movement of the capillary, wherein said variable horizontal movement is directed away from the first connection point and continually decreases in relationship to the downward movement.