WIRE BONDABLE SURFACE FOR MICROELECTRONIC DEVICES
申请公布号:US2014110844(A1)
申请号:US201214125611
申请日期:2012.05.09
申请公布日期:2014.04.24
发明人:UHLIG ALBRECHT;GAIDA JOSEF;SUCHENTRUNK CHRISTOF
分类号:H01L23/482
主分类号:H01L23/482
摘要:The present invention concerns thin diffusion barriers in metal and metal alloy layer sequences of contact area/barrier layer/first bonding layer type for metal wire bonding applications. The diffusion barrier is selected from Co-M-P. Co-M-B and Co-M-B—P alloys wherein M is selected from Mn, Zr, Re, Mo, Ta and W having a thickness in the range 0.03 to 0.3μm. The first bonding layer is selected from palladium and palladium alloys.