Method and apparatus for joining together associated metal condu

Details Method and apparatus for joining together associated metal condu Method and apparatus for joining together associated metal condu

1990-07-10

1991-08-13

Albritton, C. L.

Electric heating

Metal heating

By arc

21912163, 21912178, 21912182, 21912183, B23K 2600

Patent

active

050389505

ABSTRACT:
A laser beam type working apparatus and method are disclosed which join together metal conductors formed as an alternate layer structure over a surface side of a light-transmitting substrate with an interposing electrical insulator provided therebetween. The joining together of these metal conductors in achieved by directing a laser beam from a rear-surface side of the substrate to an underlying metal conductor to melt it so that it flows out upwardly in a molten state so that the underlying metal conductor is connected to an overlying metal conductor.

REFERENCES:
patent: 4281236 (1981-07-01), von Allmen et al.
patent: 4341942 (1982-07-01), Chaudhari et al.
patent: 4547652 (1985-10-01), Rassig et al.
patent: 4734550 (1988-03-01), Imamura et al.
patent: 4769523 (1988-09-01), Tanimoto et al.
Electronics, vol. 55, No. 14, Jul. 1982, New York, USA, pp. 159-162; Wei-Wha Wu: "Automated Welding Customizes Programmable Logic Arrays".

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