Steady autorotation of wire bonding capillary

Details Steady autorotation of wire bonding capillary Steady autorotation of wire bonding capillary

1997-12-18

1999-10-26

Ryan, Patrick

Metal fusion bonding

With means to juxtapose and bond plural workpieces

Wire lead bonder

228 45, H01L 2160

Patent

active

059712481

ABSTRACT:
A rotation device (100) provides steady, non-stepwise rotation of a wire bonding capillary (10) about the longitudinal axis of the capillary (10). This enables the capillary (10) to be rotated to different angular alignments to perform wire bonding in different directions. The rotation device can include gears (111, 122) or friction pads (211, 222). At least a part (110) of the rotation device (120) is coupled to the capillary (10). Another part (120) of the rotation device (100) is separate from the capillary (10) but is engageable with the first part to provide rotation. Sensing devices (610, 620) may be used to provide precise initial alignment of the capillary (10) and to assist in providing and confirming precise alignment and realignment of the capillary to various bonding directions during wire bonding. A computer may be used to provide automated control and rotation of the sensing devices and the rotation device.

REFERENCES:
patent: 4598853 (1986-07-01), Hill

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