发明授权
US06642609B1 Leadframe for a semiconductor device having leads with land electrodes 有权
具有带有电极的引线的半导体器件的引线框架

  • 专利标题: Leadframe for a semiconductor device having leads with land electrodes
  • 专利标题(中): 具有带有电极的引线的半导体器件的引线框架
  • 申请号: US09654070
    申请日: 2000-09-01
  • 公开(公告)号: US06642609B1
    公开(公告)日: 2003-11-04
  • 发明人: Masanori MinamioOsamu Adachi
  • 申请人: Masanori MinamioOsamu Adachi
  • 优先权: JP11-247530 19990901
  • 主分类号: H01L2350
  • IPC分类号: H01L2350
Leadframe for a semiconductor device having leads with land electrodes
摘要:
In a leadframe for an LGA package, a lead member is pressed downward to form a land lead with a half-cut portion and a land portion. The land portion, whose bottom will be a land electrode, is inclined at a predetermined angle and the bottom of the land portion is made lower than that of a lead. Thus, in a resin molding process using a seal sheet, the land electrode is forced into, and strongly adhered to, the seal sheet when pressure is applied through dies, and no resin encapsulant reaches the land electrode. As a result, no resin bur will be left on the land electrode of the land lead.
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