Invention Grant
- Patent Title: Reversible leadless package and methods of making and using same
- Patent Title (中): 可逆无铅封装及其制作和使用方法
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Application No.: US10563906Application Date: 2004-08-18
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Publication No.: US07709935B2Publication Date: 2010-05-04
- Inventor: Shafidul Islam , Romarico S. San Antonio
- Applicant: Shafidul Islam , Romarico S. San Antonio
- Applicant Address: MU Port Louis
- Assignee: Unisem (Mauritius) Holdings Limited
- Current Assignee: Unisem (Mauritius) Holdings Limited
- Current Assignee Address: MU Port Louis
- Agency: Wiggin and Dana LLP
- International Application: PCT/US2004/026790 WO 20040818
- International Announcement: WO2005/022591 WO 20050310
- Main IPC: H01L23/495
- IPC: H01L23/495 ; H01L23/28

Abstract:
A semiconductor device package includes an electrically conductive lead frame having a plurality of posts disposed at a perimeter of the package. Each of the posts has a first contact surface disposed at the first package face and a second contact surface disposed at the second package face. The lead frame also includes a plurality of post extensions disposed at the second package face. Each of the post extensions includes a bond site formed on a surface of the post extension opposite the second package face. At least one I/O pad on the semiconductor device is electrically connected to the post extension at the bond site using wirebonding, tape automated bonding, or flip-chip methods. The package can be assembled using a lead frame having pre-formed leads, with or without taping, or using partially etched lead frames. A stack of the semiconductor device packages may be formed.
Public/Granted literature
- US20070111374A1 Reversible leadless package and methods of making and using same Public/Granted day:2007-05-17
Information query
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