Invention Grant
- Patent Title: Semiconductor device package having features formed by stamping
- Patent Title (中): 具有通过冲压形成的特征的半导体器件封装
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Application No.: US12903626Application Date: 2010-10-13
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Publication No.: US08106493B2Publication Date: 2012-01-31
- Inventor: Anthony C. Tsui , Mohammad Eslamy , Anthony Chia , Hongbo Yang , Ming Zhou , Jian Xu
- Applicant: Anthony C. Tsui , Mohammad Eslamy , Anthony Chia , Hongbo Yang , Ming Zhou , Jian Xu
- Applicant Address: US CA San Jose
- Assignee: GEM Services, Inc.
- Current Assignee: GEM Services, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: H01L23/495
- IPC: H01L23/495

Abstract:
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.
Public/Granted literature
- US20110024886A1 SEMICONDUCTOR DEVICE PACKAGE HAVING FEATURES FORMED BY STAMPING Public/Granted day:2011-02-03
Information query
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