Patent ID: 6010057
Filing Date: 2000-01-04
Classification: B23K,H01L

Abstract:
A method of making of making a wire connection of predetermined shape between a first wiring point located on a semiconductor chip and a second wiring point in which a wire passes through a capillary movable horizontally and vertically by means of a programmable drive mechanism that is used both to bond the wire to the two wiring points and to guide the wire between the two bonding points, comprising the steps of:guiding the capillary along a specified trajectory to the second wiring point by means of the drive mechanism after the wire has been attached to the first wiring point, wherein the trajectory includes a first travel stage extending more or less vertically upward in order to pull through the required length of wire, and a second travel stage extending in a downward arc to the second wiring point;presetting the speed of the horizontal component of movement of the capillary at least in the second travel stage; andcalculating the vertical component of movement of the capillary based on the preset speed of the horizontal component and the specified trajectory such that the presetting of the speed of the horizontal component of movement is based upon the maximum permissible values of the horizontal and/or vertical acceleration of the drive mechanism.