发明申请
US20090250796A1 SEMICONDUCTOR DEVICE PACKAGE HAVING FEATURES FORMED BY STAMPING
有权
具有通过冲压形成的特征的半导体器件封装
- 专利标题: SEMICONDUCTOR DEVICE PACKAGE HAVING FEATURES FORMED BY STAMPING
- 专利标题(中): 具有通过冲压形成的特征的半导体器件封装
-
申请号: US12191527申请日: 2008-08-14
-
公开(公告)号: US20090250796A1公开(公告)日: 2009-10-08
- 发明人: Anthony C. Tsui , Mohammad Eslamy , Anthony Chia , Hongbo Yang , Ming Zhou , Jian Xu
- 申请人: Anthony C. Tsui , Mohammad Eslamy , Anthony Chia , Hongbo Yang , Ming Zhou , Jian Xu
- 申请人地址: US CA Santa Clara
- 专利权人: GEM Services, Inc.
- 当前专利权人: GEM Services, Inc.
- 当前专利权人地址: US CA Santa Clara
- 主分类号: H01L23/495
- IPC分类号: H01L23/495 ; H01L21/56
摘要:
Embodiments of the present invention relate to the use of stamping to form features on a lead frame of a semiconductor device package. In one embodiment, portions of the lead frame such as pins are moved out of the horizontal plane of a diepad by stamping. In certain embodiments, indentations or a complex cross-sectional profile, such as chamfered, may be imparted to portions of the pins and/or diepad by stamping. The complexity offered by such a stamped cross-sectional profile serves to enhance mechanical interlocking of the lead frame within the plastic molding of the package body. Other techniques such as selective electroplating and/or formation of a brown oxide guard band to limit spreading of adhesive material during die attach, may be employed alone or in combination to facilitate fabrication of a package having such stamped features.
公开/授权文献
信息查询
IPC分类: