发明名称 CUTTING METHOD OF LEAD FRAME
摘要 PURPOSE:To protect outer leads from external force, and to prevent the bending of the outer leads by obliquely cutting a frame section positioned at a section where the outer less mutually penetrate so that the noses of the outer leads are not projected. CONSTITUTION:Frame 1 sections corresponding to sections where outer leads 5 for lead frames in adjacent units mutually penetrate are cut in the directions oblique to the longitudinal directions of the frame 1 sections. Consequently, frames 11 for protection protecting the leads 5 from external force are formed outside the leads 5. Accordingly, the leads 5 are protected from external force, and the bending of the leads 5 is prevented.
申请公布号 JPS61125159(A) 申请公布日期 1986.06.12
申请号 JP19840246022 申请日期 1984.11.22
申请人 HITACHI LTD 发明人 KIYOZUKA KOICHI;SHIMIZU KAZUO;SHOJI SENJI
分类号 H01L23/50;H01L23/48;H01L23/495 主分类号 H01L23/50
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