Method of preventing deformation of lead frames
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United States of America Patent
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Dec 19, 1995
Grant Date -
N/A
app pub date -
Sep 16, 1994
filing date -
Oct 1, 1993
priority date (Note) -
Expired
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Abstract
Based on the fact that those portions of a lead frame which are liable to undergo deformation are the to-be-nonplated portions, the to-be-nonplated portions defined around the to-be-plated portions are covered with an adhesive tape or a resin film before the lead frame is subjected to a plating treatment, whereby to prevent deformation of the lead frame from the stage preceding to the surface treating step.
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