Method of improving the corrosion resistance of aluminum contact

Details Method of improving the corrosion resistance of aluminum contact Method of improving the corrosion resistance of aluminum contact

1987-06-23

1989-04-04

Hearn, Brian E.

Fishing, trapping, and vermin destroying

4284721, 428689, 437210, 148264, 148266, H01L 2944

Patent

active

048187275

ABSTRACT:
A method for improving the corrosion resistance of aluminum in a semiconductor device. The step includes providing a semiconductor device having aluminum containing contact pads; attaching a leadframe to the contact pads; and applying sufficient zinc chromate in solution to the contact pads for a sufficient time and at a sufficient temperature to render said aluminum substantially resistant to corrosion.

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Kirk-Othmer, "Encyclopedia of Chemical Technology", 2nd Edition, vol. 5, John Wiley & Sons, Inc., 1964, pp. 506-516.

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