发明授权
US5891796A Method for wire-bonding a covered wire 失效
线包线的方法

Method for wire-bonding a covered wire
摘要:
To prevent melting and scattering of a covering-film during ball formation, the covering-film, at the time a ball is formed, has been completely removed from the portion of a covered wire which corresponds to the tail length that protrudes from the tip of a capillary.
公开/授权文献
信息查询
0/0