BUMPING PROCESS
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United States of America Patent
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Issued Date -
Jul 18, 2013
app pub date -
Jan 18, 2012
filing date -
Jan 18, 2012
priority date (Note) -
Abandoned
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Abstract
A bumping process includes providing a silicon substrate, forming a titanium-containing metal layer on the silicon substrate, wherein the titanium-containing metal layer comprises a plurality of first areas and a plurality of second areas, forming a photoresist layer on the titanium-containing metal layer, patterning the photoresist layer to form a plurality of opening slots corresponded to the first areas of the titanium-containing metal layer, forming a plurality of copper bumps at the opening slots, proceeding a heat procedure, forming a plurality of bump isolation layers on the copper bumps, forming a plurality of connective layers on the bump isolation layers, removing the photoresist layer, removing the second areas and enabling each the first areas to form an under bump metallurgy layer.
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