Method and apparatus for laser masking of lead bonding

Details Method and apparatus for laser masking of lead bonding Method and apparatus for laser masking of lead bonding

1991-05-22

1993-03-16

Albritton, C. L.

Electric heating

Metal heating

By arc

21912164, 21912182, B23K 2600

Patent

active

051947102

ABSTRACT:
An apparatus and method of making a beam of directed energy used to bond leads to bonding areas is disclosed. The masking tool preferably includes a groove adapted to allow the beam to strike the lead while masking the surrounding substrate to prevent damage to it. The tool preferably reflects the energy striking it away from the substrate. The method can include the use of an external heat source to provide heat to the bonding process or, in the alternative, provide heat sinking to protect the electrical components from heat damage. Alternate embodiments of the tool can include a plurality of grooves or slots to allow scanning of the beam in the bonding process.

REFERENCES:
patent: 4379219 (1983-04-01), Behrens et al.
patent: 4461945 (1984-07-01), O'Cheskey et al.
patent: 4697061 (1987-09-01), Spater et al.
patent: 4970365 (1990-11-01), Chalco

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