发明名称 Manufacturing method of semiconductor device comprising molded resin encapsulating a semiconductor chip
摘要 This invention provides a method for manufacturing a semiconductor device having molded resin encapsulating a semiconductor chip and external leads extending from this molded resin to the outside, wherein excess resin projecting from edge portions of the molded resin is removed after a resin encapsulating step and a wax film is reformed on break surfaces and cracked parts of the molded resin produced in the excess resin removing step by heating the molded resin to a predetermined temperature after removing tie-bars from the external leads, whereby abnormal growth of solder between the external leads in a subsequent solder plating process is prevented and failures caused by short-circuiting between terminals are thereby prevented.
申请公布号 US5733799(A) 申请公布日期 1998.03.31
申请号 US19960611084 申请日期 1996.03.05
申请人 SONY CORPORATION 发明人 TERUYAMA, HIDENORI
分类号 B29C45/14;B29C45/72;B29L31/34;H01L21/48;H01L21/56;(IPC1-7):H01L21/60 主分类号 B29C45/14
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