Kengo Arai

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Poly(N-methylglycine) (NMGn) and poly(N-ethylglycine) (NEGn) obtained by polymerization reactions initiated by benzylamine have no carboxy termini, such as those in normal polyamides, but have only amino termini, which exist primarily as cations in aqueous media at a pH value of ca. 9.5, observed in aqueous solutions without any buffer reagents. Therefore,(More)
In order to overcome problems associated with thermal compression flip chip bonding with post-applied liquid underfill, we have developed a novel process with pre-applied Non Conductive Film (NCF) underfill. This paper describes failure modes in post-applied liquid underfill and the development of the novel NCF process which has several advantages for(More)
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