Patent ID: 6200121
Filing Date: 2001-03-13
Classification: B29C,H01L

Abstract:
A molding die for packaging semiconductor chips in a piece of synthetic resin, comprising: a die block defininga cavity having peripheral lines running substantially parallel to at least one side of said cavity, and accommodating said semiconductor chips mounted on a circuit panel;a gate open to said cavity along at least a portion of one of said peripheral lines and connected to a source of melted synthetic resin for supplying said melted synthetic resin into a vacant space of said cavity over a single surface of said circuit panel to which said semiconductor chip are mounted, through said one of said peripheral lines; anda dummy cavity in fluid communication with said cavity to receive a waste portion of said melted synthetic resin that flows out from said cavity, wherein said dummy cavity has a inner wall that inhibits the flow of said waste material out of said dummy cavity.