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filingDate 2002-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationDate 2005-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber JP-2005513759-A
titleOfInvention Semiconductor device and method for forming the same
abstract According to one embodiment of the present invention, an underbump metal (414) of a semiconductor device is formed on a semiconductor bond pad (128), and the underbump metal (414) is a graded region of chromium, copper, and nickel ( 404), and the presence of nickel in the stepped region (404) prevents tin from transferring from solder bumps and other tin sources to form a Cu 6 Sn 5 copper / tin alloy that is easy to peel off. Is done.
isCitedBy http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2015181197-A
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priorityDate 2001-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date>
type http://data.epo.org/linked-data/def/patent/Publication

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