发明名称 Method and apparatus for no lead semiconductor package
摘要 A leadframe for use in fabricating a no lead semiconductor package contains connecting bars between individual electrical contact pads. For embodiments having a die pad, the leadframe further includes connecting bars between the contact pads and the die pad. The lower surfaces of the connecting bars are coplanar with the lower surfaces of the contact pads and/or the die pad, and the upper surfaces of the connecting bars are recessed with respect to the upper surfaces of the contact pads and/or the die pad. The semiconductor package is fabricated by encapsulating the die and the leadframe in a molding compound and then removing the connecting bars. The leadframe is typically formed by half etching a metal sheet to form the connecting bars. The connecting bars are removed from the encapsulated package by a selected cutting, sawing, or etching means, based on a predetermined pattern.
申请公布号 US8071426(B2) 申请公布日期 2011.12.06
申请号 US20100838252 申请日期 2010.07.16
申请人 SIRINORAKUL SARAVUTH;NONDHASITTHICHAI SOMCHAI;UTAC THAI LIMITED 发明人 SIRINORAKUL SARAVUTH;NONDHASITTHICHAI SOMCHAI
分类号 H01L23/495 主分类号 H01L23/495
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