摘要
利用高速摄像系统记录不同打火参数下打火杆放电、尾丝熔化成球的序列图像。通过MAT-LAB对图像进行图像处理,得到最终成球的直径及其球心与尾丝中心线的偏距。实验发现,在较大的打火电流(I=60mA)或较小的预设球直径(D=40.64μm(1.6mil))等条件下,球心与尾丝中心线的偏距不稳定且相差较大,易出现高尔夫球现象,严重影响引线键合的质量。
High-speed camera system was used to record image sequences of gold rail melting to form FAB（free air ball） under different EFO（electronic flame-off） parameters. The image was pro- cessed through the MATLAB software to get the diameter of FABs and the distance be ter and centerline of gold tail. The experimental results include, the distances are of have large difference under the big EFO current （I= 60mA） or smaller default ball 1.6mil） or other conditions. At the same time, it is easy to appear golf-ball in these influence wire bonding quality seriously. tween ball cen- instability and diameter （D = conditions andinfluence wire bonding quality seriously.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2013年第10期1311-1314,共4页
China Mechanical Engineering
基金
国家重点基础研究发展计划(973计划)资助项目(2009CB724203)
